COMMISSION INTERNATIONALE
DE L'ÉCLAIRAGE
INTERNATIONAL COMMISSION ON ILLUMINATION
INTERNATIONALE BELEUCHTUNGSKOMMISSION
Division 2 Physical Measurement of Light and Radiation
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COMMISSION INTERNATIONALE
DE L'ÉCLAIRAGE Division 2 Physical Measurement of Light and Radiation |
Technical Committees
Update: March 2009
Note: TC draft documents are available to TC members only. Password required.
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Chair |
Gene Zerlaut (USA) |
AD: Johnson |
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Former chair: D. Kockott (--2002) |
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Member |
Mark Chomiczewski (US), Oscar Cordo (US), Mike DePietro (US), Steven Ellersick (US), Francois Christiaens (FR), Doug Grossman (US), Chris Gueymard (US), Warren Ketola (US), Jack Martin (US), Daryl Myers (US), Andreas Riedl (DE), Joe Robbins (US), Art Schoenlein (DE), Kurt Scott (US), Burkhard Severon (DE), Gene Zerlaut (US) - April 2006 |
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TR |
Revise and update CIE Publication No.20 (1972) |
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Documents |
TC
meeting report , January 23, 2007 in Ft. Lauderdale,
Florida, jointly with ASTM G03.09 meeting. |
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| Status- July 2008 |
The committee activities have concentrated on the revision of Publication 85 with respect to its tables of reference solar spectral energy distributions. The tabulated data were difficult to manipulate with respect to the convolution of optical properties of materials and surfaces. These data consisted of various wavelength distributions and had insufficient data in the ultraviolet region, particularly the UV-B, with respect to a number of applications. These shortcomings have largely been overcome by use of the SMARTS2 atmospheric radiation transfer model (Version 2.9.5), developed by Dr. Christian Gueymard. After a number of iterations of the revised document, it is presently being converted into the CIE document format, a process that is expected to be completed shortly. Once completed, it will be submitted to CIE for editorial review after which it will undergo an official ballot as CIE Publication 85:2008 | |
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Status- |
TC2-17 met on 28 June 2006, in Toronto, Canada. It has been agreed that the TC's work will be based on SMARTS2 version 2.9.5. Two other salient results of the meeting are: [1] Relevant tables of CIE Publication #85 will be re-constituted using SMARTS2 ver2.9.5 and will initially include Tables 2, 4 and Column 2 of Table 8; [2] the Chair will appoint four initial task group leaders whose function will be to provide the TC with atmospheric and geometric input parameters for spectral energy distributions designed for their specific applications. The re-constituted Publication #85 spectra noted above will be made available before the next meeting, which is planned for the spring of 2007 in Europe. A major agenda item for the next meeting will be to establish criteria for breaking down the detailed spectral energy distributions into wavelength bands that are amenable to simulations - and to being measured. There was no further information available in Beijing about the meeting in spring 2007. |
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Status- |
TC2-17 met on 28 June 2006, in Toronto, Canada. It has been agreed that the TC's work will be based on SMARTS2 version 2.9.5. Two other salient results of the meeting are: [1] Relevant tables of CIE Publication #85 will be re-constituted using SMARTS2 ver2.9.5 and will initially include Tables 2, 4 and Column 2 of Table 8; [2] the Chair will appoint four initial task group leaders whose function will be to provide the TC with atmospheric and geometric input parameters for spectral energy distributions designed for their specific applications. The re-constituted Publication #85 spectra noted above will be made available before the next meeting, which is planned for the spring of 2007 in Europe. A major agenda item for the next meeting will be to establish criteria for breaking down the detailed spectral energy distributions into wavelength bands that are amenable to simulations - and to being measured. |
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Status- |
There was a meeting of U.S. interests on January 25, 2005 in Ft. Lauderdale, FL. SMARTS2 solar radiation model (Guymard) is proposed. Rationale for replacing CIE 85 was prepared. Comparison of SMARTS2 and CIE 85 was done. The TCC proposes a meeting in Europe in fall 2005. |
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Status- |
no report was received this time. |
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Status- |
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March 03 |
New chairman, Gene Zerlaut (USA), is assigned. |
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Aug. 02 |
TCC is retired and is not continuing this TC. He is contacting an expert in the field who is expected to take over the chairmanship. DD suggested that we allow a little more time and contact him again to obtain the new chairman's name. |
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Chair |
N. Johnson (USA) |
AD: Johnson |
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Member |
Arens (USA), Brekke (Norway), Fisher (USA), Hsia (USA), Hubert (France), Kurioka (Japan), Price (Great Britain), Rendu (France), Rennilson (USA), Richey (Germany), Schreiber (Germany), Sugiyama (Japan), Terstiege (Germany), Vandermeersch (Belgium) |
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Identify the critical measurement parameters, tolerances, and requirements for, and conduct an international intercomparison of, the spectral coefficient of retroreflection. |
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| July 2008 | The TC 2-19 committee is still working. The interchange data had been collected some years ago. The data and analysis was previously circulated but still is not in final form. The chairman has been asked to use the repeatability data generated in ASTM Standard E811. A review meeting is planed for August in |
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July 2007 |
The final preparation of the draft is now completed and will be sent to the editor soon. |
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June 2006 |
The completion of this committee work has taken longer than anticipated, and TCC is still working on the final report. The technical work has been completed and results have been circulated informally to the TC for some time. TCC intends to get the final draft to Editor and complete the TC's work by the end of this quadrennial. |
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Status- |
The TC report is on the intercomparison of spectral coefficient of retroreflection. The report is mostly finished. The last annex on radiometers is to be added and will be ready to send to the Editor. |
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Status- |
The draft is nearly ready for TC ballot. The main output from the measurements is chromaticity. Several specification standards specify chromaticity limits and these mean that some revisions are needed to the report to take account of these limits and the associated measurement uncertainties. There is a strong link with D4 on surface colours for signalling and it had been anticipated that limits would be added to the relevant documents for retroreflective surfaces &endash; this will be followed up at the D4 meeting in September. |
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July 2003 |
The final preparation of the document has been delayed due to questions regarding how to present the final data regarding anonymous contributors. He discussed with J. Moore in April and now agreed on the final document, which should be distributed for TC ballot shortly. |
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Aug. 02 |
The intercomparison is complete and the report now needs only final editing. The report will be sent to Editor Moore and is expected to be sent for TC ballot shortly. |
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May 01 |
The intercomparison is complete and the report will need only final editing. The report will be sent to Editor Moore and is expected to be published in CIE Collection. |
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TC2-23 Photometry of Street-Lighting Luminaires
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Chair |
G. Vandermeersch (Belgium) |
AD: Vandermeersch |
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Member |
Ian Lewin (USA), A. Blochouse (Belgium),A. Corrons (Spain), L. Bedocs(UK), A. Por (France), C. Stratford (UK), R. Rattunde (Germany), G. Rossi (Italy), D. Gibs (UK), A. Ottoson (Sweden) - rev. 2003 |
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TR |
Prepare a technical report on the photometry of street lighting luminaires. |
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Status-
July 2008 |
There was a meeting with manufacturers and it was discussed to modify the scope to include temperature sensitive questions. During the discussion it was pointed out that also LED luminaries for street lighting are entering the market. The TCC also likes to have input from Goniophotometric measurements. Some relevant input for this TC may also come from Div. 1 with respect to mesopic questions and from Div. 4 where the revision of Publ. 115 is ready for ballot. The TCC will contact the responsible person in Div.1 and Div.4 to get input for this TC. | |
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July 2007 |
No progress was reported. |
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Status- |
The TC has not met since Leon, but TCC is organizing a meeting in September. The intention of the TC is to prepare a short addendum document to CIE 121, which will be numbered CIE 121-Part 2-2 and will definitively replace the old publication CIE 27. This will cover photometric data to be measured (on the basis of D4 work), photometric methods, uncertainties and tolerances. The following specific items to be dealt with were identified at the San Diego TC meeting: transformation of photometric intensity tables measured according old CIE 30-2; minimum measurement steps to guarantee accuracy in intensity interpolations for lighting calculations; clear conventions to fix the mechanical axes of the luminaire against the coordinate system; solve contradictions between CIE 140 and CIE 121 regarding the first axis of a luminaire; measurement of critical intensities for TI calculations (angles above 70°; measurements of critical intensities and upward flux for glare classification; specific problems linked to the technology of new light source lamps (correct positioning, warm-up time, stabilization, etc). There has been no major progress on these work items since the San Diego meeting, except for the last but important item. |
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Status- |
The TC had a preparatory meeting in Leon. The task is to prepare technical report on specific requirements for goniophotometry of street light luminaries and has an addendum to CIE 121. The TCC, with TC secretary Blochhouse, went through CIE 121 and determined only two sections that need to be amended, and prepared two pages of addendum to CIE 121. It addresses the problems in mounting position (tilt) of the luminairs and the presentation of test results to follow the format in CIE 140 and other formats used in the U.S. Second task is to correct problems encountered in photometry of TL5 lamps - specifically the correction of difference in lumen ratio when using reference ballast and commercial ballasts. The work on this is being handled by an informal group of three manufacturers and two laboratories in Europe, in which Laborerec is participating. |
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Status- |
He plans both TC2-23 and 2-52 meetings in September in Brussels or France. TC2-23 has not met yet, but the TCC nominated a secretary Miss Blochouse from Shreder Company. A first draft is being prepared for the September meeting. These two committees will also meet in Spain next year. TC2-52 should then be disbanded. The reportership (R2-30) on TL-5 lamps ended in San Diego. Since then the TCC had a meeting with interested people and, as decided in San Diego, new recommendations will be included in an amendment of publication 121. The work will be done within TC2-23. |
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July 2003 |
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Aug. 02 |
The scheduled TC meeting in Veszprem was cancelled due to lack of members, but instead an ad-hoc meeting has been arranged for the afternoon of Aug. 27, in conjunction with the meeting of 2-52. The document is to provide industrial laboratories with the information they need in order to carry out the photometric measurements of street-lighting luminaires required in documents published by D4. CIE 140 already addresses many issues related to measurement. TCC needs an exchange of ideas with TC members about what to add on street-lighting luminaires. |
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TC2-28 Methods of characterizing spectrophotometers
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Chair |
Teresa Goodman (UK) |
AD: Johnson |
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Former Chair: John Verrill (-1999), 2nd chair: Peter Clarke (2000-2004), Mike Pointer (2004-2006) |
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Member |
Andor (Hungary), Bastie (France), Berns (USA), Distl (Germany), Eckerle (USA), Konstantinova (Bulgaria), McCamy (USA), Robertson (Canada), Shinji Shimizu (Japan), Ulyanov (Russia), Zwinkels (Canada) -rev. 2008.1 |
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TR |
Write a CIE report on the characterization of spectrophotometers by means of reference materials and other methods, with particular reference to linearity, wavelength error, stray light, and integrating sphere errors. |
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Status-
July 2008 |
The TCC reviewed the most recent draft prepared by John Verrill and subsequently by Mike Pointer. Most of the document is still up to date, relevant and useful, but the section on colorimetric uncertainties has been superseded by work by Jim Gardner and by TC2-43. The TCC is considering how best to revise this section (one option is to delete it and simply make reference to other publications and documents) and will circulate a proposal to the TC members within the next few weeks. Once this issue has been resolved the remaining updates should be quickly completed. A new (hopefully final) draft will be ready for TC ballot in a few months. Sauter, TCC of TC2-43, remarked that it will be necessary to include models and associated uncertainty components consistent with TC2-43 within this document. | |
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Status- |
There were some problems to find the last draft. The work on the revision of the found last draft will follow soon. It was pointed out that the consideration of uncertainties has to be revised. Alan Robertson mentioned that he did this work before GUM. Most other things seemed to be still current. |
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Status- |
The latest draft is Draft 6. Since taking over the Chairmanship of this TC from Peter Clarke in 2004, TCC has been working on the draft of the technical report. His understanding was that the report was near to completion and merely needed review and editing before committee ballot. TCC circulated Draft 5 and received a response from only one member out of 9 members. But it is clear from the comments that the report needs further work of a technical nature (mainly uncertainty issues) for which TCC does not have the technical expertise to complete. Since Pointer was retiring and to resign the chairmanship, Goodman proposed that she would take over this TC for a short time to finish this document. The change was approved by D2 unanimously. Carter suggested that TC members should be updated. The latest draft has not been sent to all TC members, nor the Editor, and this should be done. |
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Status- |
The former TCC, Peter Clarke left NPL last year and Mike Pointer took over the chairmanship. Draft 5 was completed and sent to the TC. Some comments were received and they have been mostly incorporated. There are only one or two issues in the uncertainty section and some terminology updates. It is expected that the report may be sent for final TC ballot this year. |
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Status |
TC chair resigned. DD appointed Mike Pointer as the new chair. |
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Status- |
The TCC hopes to have next version of the report ready very shortly. He has put in all the extra pieces needed to complete the document prepared by John Verrill. The final version will be ready by the end of this month and will be send for TC ballot and hopefully to Division ballot by the end of the year. |
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Status- |
The draft is close to completion (as done by former chairman J Verrill), and it is mainly editorial issues that now need to be sorted out. |
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Status- |
The draft was close to completion by former chairman J Verrill when P. Clarke took over the TC. There is small amount of work to complete the document, and the TCC is working with high priority to finish the draft to a final form in next few months. |
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Apr.00 |
Peter Clarke took over the chairmanship. The third draft was recently distributed, and comments received from the members. The TCC is working on the fourth draft and hopes to circulate it later this year for TC vote and to finish the document by next D2 meeting. The contents of the report was presented at the D1/D2 Joint meeting. |
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TC2-29 Measurement of Detector Linearity
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Chair |
Tom Larason (USA) |
AD: Sauter |
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Former chair: T. Goodman (--2002) |
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Member |
J. Bastie (France), J. Clare (New Zealand), R. Distl (Germany), G. Eppeldauer (USA), T. Goodman (UK), P. Webb (USA), J. Palmer (US), G. Sauter (Germany), G. Andor (Hungary), A. Bittar (New Zealand), W. Budde (Canada), G. Dezsi (Hungary), Mihailov (Russia) - Sep 2003 (being updated) |
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TR |
Prepare a CIE guide on methods for the characterization of the linearity of detectors of optical radiation, including different principles by which the linearity of detectors can be determined and causes of non-linear behavior, to aid users of optical radiation detectors in the selection and use suitable devices for specific applications. |
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E-mail reflector |
Address / Message archive (password protected) |
Subcriber list (password protected) |
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Draft Report |
For TC members only (password
required) |
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Open documents |
Minutes
of TC2-29 meeting, June 30, 2003 (preliminary) |
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| Status- July 2008 |
There has been no progress since the last TC meeting in Braunschweig in 2006. TCC apologizes that his work activities has kept him from making progress with the next draft report. Some comments have been received after Braunschweig meeting. Before the end of the year TCC plans to revise the next draft to reference terms from the ILV and related work in other TCs, like TC 2-48. The eight people who requested to join the TC at the last meeting will be contacted by the TCC to see if they still have interest in joining (following the TC membership guidelines). | |
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Status- |
The last TC meeting was in Brauschweing in 2006. Draft 4 was discussed then and several comments received. TCC was to review the proposed ILV terms related to detectors and linear detector. No further activities reported. |
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Status- |
TC met on June 15 in Braunschweig, attended by 47 people, including 7 members. Draft 4 (2006-5) was circulated to the committee before the meeting, and was discussed at the meeting. Most of the discussion centered on the TR and definitions. In particular, there was lengthy debate on whether to strictly follow the TR and TC title and limit the document to detectors only (e.g., photodiodes) or to use the term "detector" in a broader sense and include amplifiers and possibly displays. The later, broader used of the word "detector" seems to be in line with the intent of the TR since the document is a report for the general user as a "guide" and "aid", and not a standard. This led to a discussion of proposed ILV terms for "detector" and "linear detector" and whether these terms should be used in the report or whether new terms should be defined. The meeting agreed TCC should review the proposed ILV terms for "detector" and "linear detector" and suggest to the TC whether these new terms should be used and if the TR should be modified. 8 people requested to join the TC, which will be followed up using the new membership guidelines. |
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Status- |
Work is delayed due to the TCC's work schedule. The TCC plans to make the changes agreed upon at the San Diego meeting and receive comments from the committee members by October 2005. If sufficient progress is made after receiving the comments by then, a meeting may be planned at a time and location suitable (e.g., CIE D2 Meeting at PTB in June 2006). |
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Status- |
There has been little progress on the next draft due to the TCC's work schedule. The current plan is for the TCC to distribute the changes agreed upon at the last meeting in San Diego this Fall and receive comments from the committee members by March. A second draft would be distributed before the Leon meeting in May 2005, where a committee meeting is planned. |
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Status- |
Tom Larason took over the chairmanship. The TC had a meeting in San Diego on June 30 with 23 people attending (10 members, 13 guests). This was the first meeting of reactivated committee after a few years of inactivity. The TC membership is to be re-established starting with the members present. The 3rd draft, which was handed over from the previous chair, was distributed and discussed. There was a great deal of positive discussion of the draft and a keen interest was expressed in continuing the committee. Several definitions need to be reworded, and other measurement methods to be added, such as DSR and beam conjoiner. The current draft will be totally rewritten in a new structure and format, with more parts to be added. Email reflector will be set up for further discussion and draft 3 will be posted on the website in the next several weeks. The TCC plans to have 4th draft in Jan. 2004. |
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Status- |
The draft is at a fairly advanced stage but needs some more work to complete. Last year the TCC called for a volunteer for a new chairperson. Several people were interested. Based on their experiences and knowledge of the subject of the TC, the TCC recommends Tom Larason of NIST to take over the chairmanship. This proposal was voted and agreed with no objections. The other people who volunteered are asked to help the TC activity as TC members. |
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TC2-32 Measuring Retroreflectance of Wet Horizontal Road Markings
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Chair |
N. Johnson (USA) |
AD: Johnson |
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Former chair: N. Hodson (USA) (till 2008). Johnson since July 2008. |
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Member |
Austin (USA), Davies (USA), Dibbern (Germany), Hubert (France), Johnson (USA), Lundkvistl (Sweden), Meydan (Australia), Meseberg (Germany), Rennilson (USA), Schmidt-Clausen (Germany), Schnell (USA), Schreuder (Netherlands), Soardo (Italy), Sorenson (Denmark) - revised August, 1999 |
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TR |
To prepare a guide for the methods of measuring coefficient of retroreflected luminance (specific luminance) of horizontal road markings under wet weather conditions. |
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Draft Report |
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March 2008 |
TCC, Neil Hodson, completed his 6th Draft and sent it to D2D, and resigned the chair. It seems the document is ready for TC ballot. The document was sent to Editor to edit the format and structure of the document. We need a new TC chair to complete the document. |
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Status- |
The TCC, N. Hodson, have been retired. There is a draft on the website, but it is not clear, whether the chair may proceed or not. If the chair will not be able to continue, AD has to look for a new chair. R. Austin volunteered to go through the document to help to review the current state of the draft. But he remarked that methods currently in discussion do not work very well and that there have to be some investigations on test methods for that. |
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June 2006 |
Hodson stated in a recent email that he retired from 3M last fall but would continue chairmanship of this TC to finish the TC work. The document is close to completion and TCC will send it to Editor soon. |
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Status- |
The TC draft is close to completion. One section of technical document remains to be finalized. Once this section is finished the document will be sent to the editor and for TC ballot. |
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Status June 2004 |
Additional discussion will be needed on how to include raised pavement markings in the next draft. The TCC plans to have a meeting with D4 in September. |
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Status- |
The TC had a meeting on June 30 in San Diego with 5 members and 7 guests present. There is one section remaining to be further reviewed before they can proceed. The TC will continue to discuss the draft changes by email. Next meeting will be planned for either next D2 or D4 meeting, depending on availability of the TC members. |
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Status- |
The TC met last September in Istanbul, and subsequnelty prepared the third draft document. The TC document is closely related to D4. TCC plans to have another TC meeting in conjunction with the next D4 meeting in Torino, Italy. |
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Status- |
The TC met last fall in Toronto in conjunction with D4 meeting. There is a draft document in progress. The TC is working in close contact with D4 in lighting for transportation and traffic. The TC plans to meet in Budapest with D4. |
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TC2-37 Photometry Using Detectors as Transfer Standards
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Chair |
Y. Ohno (USA) |
AD: Sauter |
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Member |
Andor (Hungary), Austin (USA), Bastie (France), Bittar (New Zealand), Czibula (Germany), Corrons (Spain), Dézsi (Hungary), Eppeldauer(USA), Gardner (Australia), Goodman (U.K.), Kohler (BIPM), Moore (UK), Muray(USA), Pietrzykowski (Poland), Rattunde (Germany), Rastello(Italy), Sauter (Germany), Schanda (Hungary), Wychorski (USA) |
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TR |
To prepare a report on the properties of V(l)-corrected detectors that are suitable for disseminating and maintaining photometric units. This report will include methods for the use of these detectors. |
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Draft Report |
<TC members only - Password required> |
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| Status- July 2008 |
TCC prepared draft 8 after |
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Feb. 2008 |
The 10th draft has been completed and was sent for the 2nd TC ballot with deadline 2008-4-30. |
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July 2007 |
Draft 8 has been prepared for 2nd TC ballot, and has been sent to Editor. |
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Status- |
The TC document went through TC ballot (draft 7) in 2004 with no negative votes but several comments, some of which were inconsistent and need to be resolved. TCC is working on these comments and will send a revised draft to the Editor shortly and then send out to TC members again, for a second TC ballot. |
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Status- |
TC ballot for the draft 7 in June 2004 and several comments (mostly editorial) were received. There were no negative votes. The TCC will finish another revised draft to make these minor changes and to send out the document once again for check by TC members, and to prepare the final version for Division ballot. |
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Status- |
The TCC completed the 7th draft in the CIE report format, sent it to the Editor for checking the format and editing, and distributed to TC members for TC ballot, just before this meeting. The TC members listed in the document have been reduced to 15, removing those who did not contribute. If no new issues are raised from the ballot, the TCC hopes to have the TC report approved by Division ballot by the end of 2004. |
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Status- |
The work is close to completion. Last draft version had only a few minor comments. The TCC prepared the 7th draft for TC ballot and tried to send it to Editor before sending out. The Editor, however, suggested that this should be done by the new Editor, since the work may continue after San Diego meeting. The TCC will send the 7th draft to the new Editor after this meeting and then for TC ballot, hopefully before the end of 2003. |
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Status- |
The sixth draft was distributed in April 2001 by email, and only a few minor comments were received. The next draft is for TC ballot, and needs only minor changes and updates to some figures and the format of document. The TC ballot is to be distributed by the San Diego meeting. |
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Status- |
TCC rewrote many sections of the draft with the latest information available, and produced the 6th draft, which was distributed to the members in April 2001 and comments being requested by June 15. The draft is also on the website. Some changes were made on terminology to resolve comments made before, and more detailed information added to the determination of reference plane in the Annex. The next draft is hopefully to be sent for TC ballot later this year. |
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TC2-40 Characterizing the Performance of
Illuminance and Luminance Meters
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Chair |
Peter Blattner |
AD: Sauter |
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Member |
Austin (USA), Bastie (France), Blattner (Switzerland), Czibula (Germany), Dezsi (Hungary), Goodman (UK), Khandelwal (India), Khanh (Germany), Mahidharia (India), Ohno (USA), Pietrzykowski (Poland), Rattunde (Germany -deceased), Saito (Japan), Sauter (Germany), Stolyarevskaya (Russia), Vandermeersch (Belgium), Webb (USA), Xu (Singapore), Bergen (Australia), Krüger (Germany), Pan (China), Schanda (Hungary), Shitomi (Japan), Steudtner (Germany) - rev. July 2008. |
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TR |
Convert the present CIE Technical Report No. 69 into a CIE/ISO standard. Prepare a combined CIE/ISO standard describing the definitions of quantities influencing the performance of illuminance and luminance meters, as well as defining measurement procedures for the individual error quantities. |
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Draft Report |
<TC members only - Password required> Minutes of the intermediate meeting 2009-01-28 (pdf) |
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| Status- Mach 2008 |
Prior to the meeting in |
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July 2007 |
Peter Blattner (Switzerland) agreed to take over the chairmanship, which was approved unanimously by D2. An email reflector for the TC has been created. The TC met in Beijing and report given by Blattner. The meeting was attended by about 50 participants including about 10 TC members. Prior to the meeting in June, the TCC distributed Draft 7 with two new sections and several proposals for further changes. Several points on further changes for the draft were discussed at the meeting. The main concern was on class L photometers and uncertainty of f1' value. The TCC proposed to form a task group to do some practical measurements of class L photometers and to report the experiences back to the TC. First results should be available during the next six months. The TC plans next physical meeting in Turin 2008. The minutes of the TC meeting are available for further details. |
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2007 |
The TCC, Reiner Rattunde, passed away in Nov. 2006. Peter Blattner (Switzerland), who has been active in the TC as well as CEN WG7, agreed to take over the chairmanship of this TC, subject to confirmation by D2 and the Board at the Beijing meeting. An email reflector for the TC has been created. |
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Status- |
A fourth draft was prepared and distributed to the members on May 4, 2006. It had already been edited by the Editor. The TC met on June 14 2006 with about 80 participants, with 7 official members (out of 16) present. Draft 4 was presented and discussed. The general contents of the report were agreed. Further actions on technical contents, formal structure as standard and time schedule for completion were discussed. TC agreed to change the term "characteristic" to "index" and the term V(ª) match" into "V(ª) mismatch". The draft will be converted into the CIE format for standards using the proper template by the Editor. Email reflector will be setup to discuss final technical details for the draft. The chapter of uncertainties will be left for discussion after receiving the guidelines from DD. A final draft for TC ballot should be ready at the end of this year so that the standard could be finished at the 2007 Beijing meeting. Several new people requested to join the TC, which will be followed up per guidance from DD. |
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Status- |
No report received. There has been no progress of the TC since Warsaw. It was suggested that, if no progess is made in a given time, a new chairperson may be looked for or the TC might be closed. |
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Status- |
TCC regrets the little progress made for the past few years due to his other workload. The TCC plans to finish the next draft version and distribute it in two months and have discussion on e-mail reflector. The TC lost a few members and membership list is to be revised. New members are invited. |
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Status- |
TCC regrets the slow progress of this TC recently, as he had very little time to work on this. TCC is working on the next draft version, but not completed by this meeting. The TCC plans to finish it and distribute the new draft in a few weeks after this meeting and to have discussion via e-mail correspondence. |
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Status- |
No report made. |
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Status- |
There has not been much progress since Warsaw meeting due to recent workload of the TCC. He is working on the next draft version and plans to use e-mail reflector to discuss the next draft on-line before next physical meeting. |
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Status- |
No report made. |
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TC2-43 Determination of measurement uncertainties in photometry.
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Chair |
G. Sauter (Germany) |
AD: Sauter |
|---|---|---|
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Member |
J. Bastie, France; P. Blattner, Switzerland; A. Bouman, Netherlands; A. Corróns; Spain; R. Daubach, USA; J. Gardner, Australia; A. Gaertner, Canada; T. Goodman, UK; G. Heidel, Germany; U. Krueger, Germany; C. Miller, USA; J. Moore, UK; Y. Ohno, USA; M. Rastello, Italy; R. Rattunde†, Germany; G. Sauter, Germany; J. Schanda, Hungary; W. Steudtner, Germany; P. Webb, USA; R. Young, USA; Y. Zong, USA. (rev. Febr. 2009) |
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TR |
To prepare a CIE recommendation as basis for the determination of measurement uncertainties valid for quantities used in photometry. |
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Draft Report |
<TC members only - Password
required> |
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|
Nov. 2008 |
A modified Draft 8 of TC2-43 was send to the editor. All changes in the main document and the Annex A are included. These parts are now presented for TC ballot. The rest of the document is devided in three additional parts, entitled Annex B, Annex C and Annex D which are available for comments. |
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July 2007 |
Draft 8 of TC2-43 was posted on the website. The draft includes the main part and the annexes A and B but missing C. Annex C will be send out by the end of the year. On the webpage is also an Excel table "TC2-43E8a.xls" which can be used and optimized by the members. Additionally there is a "Mathematica"-notebook "UncBud_TC2-43M8a.nb" with the identical examples as in the Excel tables. To run the notebook, one has first to add the new created Mathematica package"CIEGUM.m" in the directory "Applications" of Mathematica. The TCC likes to have the recommendation of TC2-43 as an open document, to which additional annexes can be added if required. J. Schanda suggested to publish the recommendation and the annexes separately. |
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June 2006 |
A revised draft was prepared following on from the discussions at the last meeting, and this was used as the basis for Tutorial part of the Symposium just held. The TC document is divided into 3 parts: the first part covers fundamentals (main document), the second part (Annex A) is 15 modules from which more complex uncertainty budgets can be developed, and the third part is examples for modules with Mathematica programs, which are being converted to EXCEL. The document explains that the GUM is good for linear models, but not sufficient in some cases like f1'. There is a reference to the Monte Carlo method which is being incorporated into a supplement to the GUM (to be published). The final report should be ready for TC ballot by August. |
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Status- |
The document is ready except on the question of weighted fits of distribution temperature, for which he was waiting for conclusion from the reportership (Robertson) created at Tokyo meeting. After having this resolved, the document will be ready to send to the Editor and for TC ballot. |
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Status- |
The TC had a meeting in Tokyo on 9 June with many participants. The draft is basically completed, although format of the worked examples and possible calculation templates are still to be finalized. During the TC meeting the TCC proposed that uncertainties of the spectral values should be considered in the calculation of distribution temperature. Ohno raised a concern that this would be a change of the definition given in CIE 114/4, and that, if this change was recommended, it would be possible to obtain two different answers from the same spectral data, with and without weight. After a lengthy discussion, TC agreed on the chairman's proposal to use the weight by uncertainty. This issue was discussed again at Div. 2 meeting, on a problem Ohno noticed, and a reportership has been establilshed to investigate the problem. (See 2004 D2 meeting minutes.) |
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Status- |
The TC had a meeting in San Diego on 1 July with many participants. The main part of the document was reviewed and was accepted in the current form. The second part of the document has several examples of uncertainty budget in practical measurements. The TC discussed a possibility of adding more examples, including those for color quantities, to be published in two or thee parts, in the form of CD ROM, including EXCEL sheets. The main part is basically ready for publication. The TCC will have the document checked by Maurice Cox (UK) and a PTB statistician for all the equations and consistency with GUM. The TCC plans to have the final version ready for TC ballot by the end of the year. |
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Status- |
No report made. |
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Status- |
The TC met on May 18 at NIST prior to this Division meeting. The document has two main parts. The first part on the fundamentals of uncertainty evaluation is now complete except editing. The second part is for examples. The TCC hopes to add more examples in the second part, and is requesting more inputs on practical applications. The document is planned for completion in one year for TC ballot. |
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TC2-44 Vocabulary Matters
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Chair |
Jim Gardner (Australia) |
AD: Johnson |
|---|---|---|
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Member |
Being reconstructed. |
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TR |
To provide liaison between Div.2 and TC 7-06 "Lighting Terminology" and support the preparation of the new edition of the Lighting Vocabulary in the field of light and colour measurements. |
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Draft Report |
<TC members only - Password required> |
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| Status- June 2008 |
Editorial comments have been made on the draft of the revamped Lighting Vocabulary. The format of this document is significantly different from previous editions and it represents an enormous amount of work, particularly for John Bastie and his immediate working group.Once the ILV is published, D2 members should review it against the older version for any inconsistencies or items which might have been overlooked. New items related to the physical measurement of light and radiation (i.e. within the purview of D2) require a full discussion and consensus within D2. No new terms requiring consideration for inclusion in the next version of the ILV have been brought to TTCs attention, either directly or in terminology in completed TC drafts. See also 5. Director’s report about the activity in CIE BA. |
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July 2007 |
ILV (International Lighting Dictionary) is being fianlized by CIE BA. Regarding membership list: Any members of D2 should be able to raise questions on terminology through the D2 discussion list. If new or revised terms are suggested, those contributing to the discussion become the committee members for that item. The result of such a discussion, and also terms derived from TC reports, would then be reviewed as part of the formal approval when a new version of the ILV is being prepared. |
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Status- |
Preparation of publication of new ILV version is in progress by CIE CB and VP Jean Bastie. This TC should continue to organize new terms coming out. It was noted that the membership list is outdated. Editor feels that the whole division should be involved rather than members, and will propose a new membership scheme. Any new terms after the new ILV comes out will be collected from new TC documents published after the new ILV. |
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Status- |
Several terms that had been under discussion within D2, and discussed at Tokyo meeting, were sent to the ILV committee as agreed by D2. A few items which generated further questions were held-over for further discussion, and deemed too-late to be resolved in time for the coming revision. Some inconsistencies in revised terms from the different Divisions were raised, and harmonization efforts took place by email discussions between Schanda, Editor, D2D, and Secretary. After this ILV revision, next revision will not be processed for some years. Editor proposes that this TC should continue but not with fixed members. He suggests that, new terms will be approved when new TC documents are approved by Division ballot, and that, when any issues or conflicts of terms are raised, a discussion is generated within the Division by e-mail, with all interested parties, and reporting the results to the TC 2-44 Chair (ie, Editor) for listing in submissions when next revision of the ILV takes place. |
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Status- |
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Status- |
This TC will be transferred to the new Editor. There was an issue of the radiance definition, which was already discussed. Also, as general information, the ILV committee decided that 1st of July next year will be the deadline for all the Divisions. We already had Division ballot for D2, and Editor is incorporating some comments received. There is an opportunity by that deadline to add new terms. M. Pointer reported that D1 did not have TC for ILV (they only had a WG) before, but at the D1 meeting this time, they established a new TC. This TC, chaired by the new D1 Director, Sharon Mcfadden, should work very closely with D2. There is a TC in D8 on terminology, chaired by J. Schanda. All these TCs should coordinate. |
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Status- |
The Division 2 part of the Vocabulary (proposed changes) went through Division ballot in June 2002. One objection, which was also raised with the TC2-35 document (DS10.2e), was that the ILV definition of radiance and luminance may be incorrect. Another request was to define the CIE standard spectral luminous efficiency function in the ILV. |
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TC2-46 CIE/ISO standards on LED intensity measurements
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Chair |
John Scarangello (USA) |
AD: Sauter |
|---|---|---|
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Member |
Angerstein (Germany), Bando (Japan), Bouman (Netherlands), Bym (USA), Carr (USA), Distl (Germany), Ellis (USA), Goodman (UK), Heidel (Germany), Hwang (Taiwan), Jones (USA), Lester (USA), Moore (UK), Ohno (USA), Rastello (Italy), Sauter (Germany), Scarangello (USA), Schanda (Hungary), Schumacher (Germany) |
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TR |
To prepare a CIE/ISO standard on the measurement of LED intensity measurements based on the CIE Pub. 127. |
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Email reflector |
Addres / Message archive (password protected) |
Subscriber list (password protected) |
|
Draft Report |
<TC members only - Password
required> |
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| Status- July 2008 |
The TC has been inactive since Braunschweig meeting, but TCC is willing to continue his work. The TCC needs some assistance of a few serious and knowledgeable volunteers who can give him advice on revising and completing the draft. J. Schanda, G. Sauter, and Y. Ohno accepted to provide assistance to the TCC. | |
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Status- |
The TC will be working via email on a new draft that will address several editorial, format, and technical issues that still remain. The first issue has to do with how to more clearly define the mechanical axis in a general way that covers the small multi-chip and multi-lens LEDs that we want to include in the scope of the standard. The second issue has to do with the need to specify the LED conditions with respect to temperature and forward current since these have a big input on the measurement. On temperature, some members would like to specify a specific Tj or Ta and some would like to keep the standard more flexible since Tj is difficult to measure and a specific Ta would limit the use of the standard. The TCC will propose solutions on these issues. The third issue had to do with what to include in an uncertainty guideline section. Now that we have the Guideline for Uncertainty Sections, we will attempt to add a section with at least a table as suggested. The last issue is that the document should be put in the template for these standards. |
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Status- |
The TC met in Braunschweig. The seventh draft was distributed and reviewed. In addition to several editorial and format comments, the meeting focused on several technical issues that still remain. The first issue has to do with how to more clearly define the mechanical axis in a general way that covers the small multi-chip and multi-lens LEDs that we want to include in the scope of the standard. The second issue has to do with the need to specify the LED conditions with respect to temperature and forward current since these have a big input on the measurement. On temperature, some members would like to specify a specific Tj or Ta and some would like to keep the standard more flexible since Tj is difficult to measure and a specific Ta would limit the use of the standard. More negotiation is needed on this issue. The third issue had to do with what to include in an uncertainty guideline section. Some ideas on this were discussed, in particular whether to include temperature in the uncertainty if it is not specified for the measurement. This discussion concluded with the input that we will get an uncertainty guideline to be used by all the TCs and we should wait for that. The last issue is that the document should be put in the template for these standards. |
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Status- |
The TC met in Leon in May 2005 and reviewed the sixth draft document, specifically focusing on scope, definitions, specific tolerances, uncertainty calculation, and detector description sections. With respect to scope, we discussed including multiple chip or lens LEDs that are within the size limit scope. On definitions, it was decided to remove acceptance angles, allow mechanical axis and case temperature point to be defined by the LED vendors, consider a "spectral intensity" definition, and in general not include items like Tc or Tp, if they are defined elsewhere. On tolerances, it was tentatively decided that tolerances are not needed, because this is a measurement standard, and not an equipment standard. However, a section on uncertainty calculation should be added with help from committee members to write it. On detector descriptions, we decided to just drop the detector appendix since the standard is mainly a measurement definition and not a guide. |
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Status- |
No report this time. |
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Status- |
The TC had a meeting in San Diego on July 1, 2003 with 32 participants. Draft 5 was presented and discussed. The TC discussed several major issues, such as dealing with tolerances, uncertainty calculation, test geometry variations, LED test conditions, and detector calibration. The TC agreed to have tolerances in the appendix. Test geometry with mechanical axis only was agreed. Uncertainty section is still to be written with input from members. Discussed LED test conditions, current drive, andtemperature setting. How to specify temperature for high power LEDs (with heat sink) was discussed but will need further work. The TC also discussed generalizing the description of the detectors which can be used, including spectroradiometers. Terminologies and calibration issues are still to be resolved. Draft 6 will be prepared after more inputs from members are received, hopefully in the next few months. (The materials presented at July 1 meeting (PDF file) are available) |
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Status- |
No report made. |
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Status- |
The TC met on May 17 at NIST prior to this Division meeting. Draft 4 was distributed and discussed. The TC first discussed tolerances on geometric specifications, and agreed to put them in the Annex. For methods of calibration, the TC agreed to include the substitution method and the detector-based method, and to remove the method based on flux-based calibration. Some other changes have been agreed on LED test conditions (temperature) and LED alignment (mechanical axis). The section for uncertainty calculations to be completed. The TCC plans to go through a few more drafts to complete the work by San Diego meeting. |
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TC2-47 Characterization and Calibration Methods of UV Radiometers
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Chair |
Armin Sperling (Germany) |
AD: Sauter |
|---|---|---|
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Former chair: Gan Xu (Singapore) ( till 2004). Sperling since June 2006. |
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Member |
Andor (Hungary), Boivin (Canada), Corrons (Spain), Coutin (France), Dezsi (Hungary), Eppeldauer (USA), Goodman (UK), Gugg-Helminger (Germany), Halbritter (Germany), Hengstberger (South Africa), Karha (Finnland), Kravetz (USA), Kohmoto (Japan), Larason (USA), Leecharoen (Thailand), McArthur (Canada), Ohno (USA), Pietrzykowski (Poland), Saunders (USA), Sauter (Germany), Sperfeld (Germany), Sperling (Germany), Takeshita (Japan), Thompson (USA), Webb (USA), Wilkinson (Australia), Xu (Singapore), Ye (China), Bergen (Australia) - July 2008 rev. |
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TR |
Prepare a CIE recommendation on methods of characterization and calibration of broad-band UV radiometers in the spectral ranges of UVA and UVB for industrial applications. |
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|
Draft Report |
<TC members only - Password
required> TC Pre-Draft 3.1 2008-7-24 (doc file) (also in pdf) Minutes of TC meeting in Turin, July 10, 2008 (doc) |
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| Status- July 2008 |
Prior to the meeting in |
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Status- |
The TC met first time with the new TCC in Beijing after a long time of inactivity. The former TCC (Gan Xu) gave an overview on the past work and the structure of the existing draft. The new TCC explained proposed changes within the first chapters to make the document consistent with the ILV and the TC2-40 draft. The new draft will be send to all members within this year. The next meeting of the TC is planed in Turin, Italy, 2008. |
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Status- |
The former chairman, Gan Xu, resigned in 2004 and the chairmanship has been open since then. The TC has a substantially completed draft and it was felt at previous D2 meetings that it is important to continue this TC. DD Goodman had contacted a few possible candidates, but had not been successful. Armin Sperling of PTB offered at the meeting to take over the chairmanship; D2 voted to approve this change of chairperson with no objections. |
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Status- |
New TC chair not found yet. DD will try to approach some possible candidates. We have fairly complete draft and there will not be so much work to complete this committee. |
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Statis June 2004 |
The TCC resigned earlier this year due to changes in his work responsibility at his organization. He apologizes for his resignation but believes that the TC work is still very important for the UV community and hopes the TC work can be continued by a new chairman. He is willing to help transferring the TC work to whoever can take over. DD asked for a volunteer from the participants, but none was forthcoming. DD will try to find someone from NPL (UK) to continue this TC. |
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Status- |
The TC had an informal meeting during NewRad2002 at Gaithersburg attended by about 19 people. The chair informed the meeting that as he had been assigned a new post by his organisation to work in dimensional & mechanical metrology areas and would be no longer directly involved in P&R work, he had difficulty to continue the work for TC2-47 and was considering resigning as the TC chair. As no one volunteered to replace him, he decided to continue as the TC chair for at least another year and try to finish the revised (2nd version) document. Now, the revision of the document is still on-going and is expected to be finished and circulated to members for comment by September. The chair regrets that he could not hold the TC meeting in 2003 due to budgetary reasons and he also wishes to get more support from members of the TC. |
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Status- |
There was an unscheduled TC meeting during NEWRAD 2002 at NIST, Gaithersburg, with many attendees. At the UV workshop held after the NEWRAD conference, again people showed strong interest in the work of TC2-47 and the need for a new international standard for UV meters was evident. At the meeting, three labs (CSIRO, CSIR and HUT) promised to send their calibration procedures to the TCC and these will be put on the CIE website for member’s reference and discussion. TCC would encourage other labs to send their procedures or other materials for discussion. Any suggestions or comments related to the new document or TC work are welcome. TCC is preparing the 2nd draft of the TC document and will circulate it for comments shortly. |
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TC2-48 Spectral responsivity measurement of detectors, radiometers, and photometers.
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Chair |
George Eppeldauer (USA) |
AD: Sauter |
|---|---|---|
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Member |
Andor (Hungary), Austin (USA), Boivin (Canada), Bouman (USA), Coutin (France), Dezsi (Hungary), Gardner (Australia), Goodman (UK), Larason (USA), McArthur (Canada), Pietrzykowski (Poland), T Saito (Japan), Sauter (Germany), Webb (USA), Armin Sperling (Germany). Palmer (USA-deceased), Rattunde (Germany-deceased) - updated May 2007. |
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TR |
To rewrite the technical report CIE 64 (1984) "Determination of the spectral responsivity of optical radiation detectors" to update device and measurement technology, and include the spectral irradiance responsivity measurement for radiometers and photometers from UV to near IR. |
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Email reflector |
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Draft Report |
<TC members only - Password
required> |
|
| Status- July 2007 |
The 11th draft of the Technical Report was distributed to the members and participants during the meeting at Turin. The document is close to its final shape having 8 chapters and 72 pages. The changes in the new draft were discussed. The German title and summary have been done. In addition to many minor changes throughout the document, a few sections, prepared by four contributors have been added to the 11th draft. The TC2-43 Uncertainty document that includes the mathematical methods based on the GUM standard will also include this chapter and references will be made in both documents. George Sauter will make the necessary changes in this document. The Differential Spectral Responsivity (DSR) method in 4.5.4 has been extended by Armin Sperling and Georg Sauter of PTB. Chapter 5.4 on Electronic imaging devices was deleted. Chapter 6.5 on Spectral stray light and fluorescence issues has been added to the document. Yuqin Zong of NIST agreed to extend this chapter to 3-4 pages by giving more data and examples for stray light and fluorescence. As the CIE Document #63 on Spectroradiometric Measurement of Light Sources discusses some monochromator details, this document will be referenced and the Appendix will be modified. A general finalization and then editing is needed to finish the document by the next meeting. The document will be ready for TC ballot in one year. | |
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Status- |
The TC met in Beijing with 40 participants. The 10th draft was distributed to the members and participants. The document, now 71 pages, is getting close to its final shape. The document is restricted to single element devices. Measurements of imaging devices have been left out. The Summary and Introduction have been modified because of this restriction. The Uncertainty chapter, using the contribution from Stefan Winter, has been extended with the correction for wavelength shift. An agreement has been made at the meeting to reference the TC2-43 uncertainty document that includes the mathematical methods based on GUM. (More report available in the minutes.) |
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Status- |
The TC met on June 14, 2006 in Braunschweig (8th meeting). Draft 9 was distributed prior to the meeting, and discussed at the meeting. The uncertainty sections (3.6 and 3.7) have been expanded and this new information was also presented at the CIE Expert Symposium in a talk by Eppeldauer. Chapter 6 has been modified: only the recommendations relating to calibration now remain in the main text and information on instrumentation has been moved to the Appendix. A subsection on bandpass effects and corrections has also been added to this chapter. In the Appendix, a subchapter on the bandwidth normalization by moments has been removed. The references are now complete. Editor has started editing the document in CIE style. Some contributions to the uncertainty chapter from PTB (Sauter and Stefan Winter), are expected. Some more minor corrections and additions to improve the document further are expected before the final editing. |
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Status- |
TC met in Leon. The TCC prepared the 7th draft, all chapters completed, and distributed to TC members in April. The draft was discussed at the meeting. There are no major issues. Last part on monochromator may probably be moved to Appendix. Section on bandpass correction will be re-examined in relation to work in TC2-60. After these changes are made, the draft will be close to a TC ballot. Next meeting is planned for Braunschweig. |
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Status- |
The TC met on June 10, 2004 in Tokyo, with 29 participants. The 6th draft was presented and discussed. In the new draft, Chapter 6 has been extended with sub-chapter 6.4 on Filter Radiometers. Section 6.1 on monochromators is being extended by Palmer (USA) and he is also writing Section 6.3 on the Use of Narrow Bandpass Filters. Section 6.2 on Uniform sources is to be written by TCC. Chapter 8 on References has been added and it is being extended. Chapter 2 on Definitions is also being extended and the Terminology is being improved. The sub-chapters on Uncertainty need to be extended to include aspects related to correlation - Sauter volunteered to do this. The uniformity of the document is to be improved. Suggestions were made by Jiangen Pan to modify Figs. 2, 3, and 17, and also by Richard Distl to improve Figs. 17 and 18. Secretary requested that the new draft be distributed to the members in advance of the next meeting. (Draft 6 is now posted on the website for TC members) |
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Status- |
The TC met on June 30, 2003 in San Diego, with 20 participants including 10 members. The newly written 5th draft was presented and discussed. The new draft added Chapter 5 (spectral radiance responsivity) and a part of Chapter 6. Basic chapters of the report &endash; spectral radiant power responsivity, spectral irradiance responsivity, and spectral radiance responsivity - are now done. The TC agreed on some changes to remove sections on responsivity for spectrally integrated quantities. Chapter 6 (spectral considerations in responsivity measurements) is to be completed for two more sections. Chapter 7 (preamplifires for spectral responsivity measurements) is to be written. Overall, 75 % of the report has been written. Next draft will be prepared to incorporate comments received this time. |
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Status- |
The TC met on Aug. 24, 2002 in Veszprem with 17 participants. The scope of the report is to cover spectral responsivity in radiant power, irradiance, and radiance mode, in the 200 nm to 2.5 mm spectral region. The Fourth Draft was distributed and discussed in detail. Four chapters including chapter 3 on radiant power responsivity and chapter 4 on irradiance responsivity have been written. Work on Chapter 5 (radiance responsivity) is to start shortly. Several suggestions were made at the meeting, and the next version of the draft document is to be prepared before the San Diego meeting. |
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TC2-49 Photometry of Flashing Light
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Chair |
Yoshi Ohno (USA) |
AD: Vandermeersch |
|---|---|---|
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Member |
Carl Andersen (USA), Richard Austin (USA), Jan Berkhout (USA), Dennis Couzin (USA), Dave Ellis (USA), George Eppeldauer (USA), Irena Fryc (Hungary), David Gibbs (UK), Teresa Goodman (UK), Franz Hengstberger (South Africa), David King (USA), Justin Rennilson (USA), Ken Sagawa (Japan), H. -J. Schmidt-Clausen (Germany), Georg Sauter (Germany), Ian Tutt (UK), Francoise Vienot (France), Pierce Webb (USA), Reiner Rattunde (Germany -deceased)- revised May 2007. |
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TR |
Produce a technical report for photometric measurements of flashing light, including derivation of the photometric quantities applied to flashing light, measurement of light sources, and calibration of photometers for flashing light. |
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<TC members only - Password required> TC Draft 4.1 2008-7-22 (doc file) (also in pdf) Minutes of TC meeting in Turin, July 9, 2008 (pdf) TC Draft 4.0 (discussed at the Turin meeting) (pdf) Dennis Couzin, Confirming other methods with the Form Factor Method data, Nov. 21, 2007 (pdf) TC
Draft 3.0 June 2007 (pdf 1.6 MB) |
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Open documents |
Activity
Report April 2003 (doc 44 K) |
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| Status- July 2008 |
The new draft 4.0, distributed to the members prior to the meeting, was presented and discussed. The new draft proposed the new title of the document and the new TR, which were agreed as below. Title: Measurement of Effective Intensity of Flashing Lights TR: Produce a technical report on CIE recommendation for measurement of effective intensity of flashing lights. Contents of the main part are now limited to definition and measurement of effective intensity. General physical measurements parts have been removed, except those parts specific to effective intensity. A section on limitation of Modified Allard method has been added. Several minor comments on the draft were received during the meeting. TCC also received many editorial comments from I. Tutt after the meeting. No major changes to the draft were requested or suggested. It was also suggested that the TC membership list should be updated. D. Couzin presented his analyses on Schmidt-Clausen’s original thesis data applied to Modified Allard method and other convolutional methods. A written report “Confirming other methods with the Form Factor Method data,” The TCC asked the members present for any further comments on Draft 4.0 for the next one month before he creates next draft version. He will ask the same to other TC members who were not present. The TCC hopes to make a draft for TC ballot before next meeting in |
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Status- |
he TC met in Beijing with 41 participants. The previous draft of 2002 simply described the existing three basic methods (Form Factor, Blondel-Rey and Allard), while Modified Allard method was proposed by D. Cousin and Y. Ohno. The previous meeting was 2002, when the TC agreed to obtain visual experimental data on Modified Allard method before it can be adopted. No experiments, however, have been conducted since then, while the industry kept stressing the needs for one standard method. While there is still a lack of measurements, data in a paper of the US Coast Guard from the 1986 dealing with trains of pulses agreed very well with the results of Modified Allard method. Based on these data, the TCC proposed to adopt Modified Allard as the recommended method. TCC wrote and distributed draft 3.0 prior to the meeting. The TC discussed this proposal at Beijing meeting, and after long discussion, the TC agreed to adopt this proposal, with several suggestions. The limitations of this method were discussed and will be described in the new draft. It was also decided to focus this report on effective intensity, not broadly measurement of flashing lights. Therefore, the terms of reference will be modified and the draft will be revised accordingly. During discussion it was noted that the restriction to white light has to be addressed somewhere in the document. |
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Status- |
Progress has been slow, since the TC is still waiting for visual evaluation data. However the TCC wants to try to finish the rest of the document, as there is a strong desire to standardize one method for effective intensity. He mentioned that NIST has established a Vision Science project, within which it is planned to carry out some effective intensity experiments in a few years time. A guest researcher to work on such experiments would be welcome. DD asked TCC to try to finish the document except for the remaining issue. One option might be to separate effective intensity issue and finish the document only on physical measurement part. The TCC will try to follow that route. |
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Status- |
The current draft document contains four methods. It is the plan to standardize on one method for measuring effective intensity, but little progress has been made recently due to lack of visual experiment data. A 1986 paper by US Coast Guard was found, which reported vision experiments on trains of pulses at different intervals, which agree well with Modified Allard results. NIST now has a post-doc vision scientist in their staff and expecting to start a vision science project where experiments on effective intensity are planned. On the other hand, TCC is also preparing to make a progress on the draft report without waiting for further experimental data. |
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Status- |
There have been little progress since 2002. At the 2002 meeting, the focus was on the definition of effective intensity and standardization of the formula, which would need further visual experiments coordinated with D1. The TCC, however, has not found any member or group that plans to perform such experiments. Rattunde suggested that the TC should not wait for further experiments but rather complete the TC report with the current knowledge available, without recommending a single method for effective intensity. The TCC agreed with this suggestion, but emphasized that there is a strongly need for a standardized definition for effective intensity. |
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Status- |
The TC last met in Veszprem in 2002. The TC has not come to a consensus on the definition of effective intensity. TC formed a Working Group to formulate the experimental conditions of the required visual experiments and publicize a call for research. The TCC is having communication by e-mail among WG members to start this process. |
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Status- |
The TC met in Veszprem on Aug. 26, 2003. 7 members and 15 guests attended. Draft 2 (Aug. 2002) was distributed and discussed. Previous Sections 3 and 4 have been merged into one section. Minor changes on the definition of terms were discussed and agreed. Section 4 (Effective Intensity), which described only the Form Factor method in the previous draft, has now been rewritten to include the three methods currently used, as a temporary treatment until a consensus can be reached for one best (recommended) method. The TCC reported that Couzin & Ohno had carried out some calculations to compare the three methods and had developed the Modified Allard method, which was presented at the Symposium. There were considerable discussions on the new method and the validity of the conventional methods. A consensus was that visual experiments are needed to evaluate the Modified Allard method, as well as the conventional methods, for trains of pulses and other specific pulses. The TCC agreed to form a Working Group comprising experts from D1 and D2 (Schmidt-Clausen, Couzin, Vienot, Sagawa, Goodman, and Ohno) to formulate the experimental conditions of the required visual experiments and publicize a call for research. Related documents will be posted on the website. |
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Status- |
The TC met in Veszprem on Aug. 24, 2003. 7 members and 15 guests attended. Draft 2 (Aug. 19, 2002) was distributed and discussed. Previous Sections 3 and 4 are merged into one section. Minor changes on the definition of terms were discussed and agreed. Section 4 (Effective Intensity), which described only Form Factor method in the previous draft, has now been rewritten to include the three methods, as a temproary treatment until a consensus can be reached for one best method. Chairman reported that Couzin & Ohno made substantial calculation analyses to compare the three methods and developed Modified Allard method, which theoretically solves some inherent problems in Form Factor method and Blondel-Rey equation. Some details of the Modified Allard method were discussed but no consensus reached. TC agreed on the need for experimental validation of the Modified Allard method for further discussion. TC agreed to form a Working Group by experts from D1 and D2 within the TC to formulate the experimental conditions of the needed visual experiments and publicize a call for research. |
|
TC2-50 Measurement of the optical properties of LED clusters and arrays
|
Chair |
Georg Sauter (Germany) |
AD: Vandermeersch |
|---|---|---|
|
Member |
Distl (Germany), Goodman (UK), Heidel (Germany), Kohmoto (Japan), Muray (USA), Ohno (USA), Oshima (Japan), Pan (China), Rattunde (Germany), Sauter (Germany), Steudtner (Germany), Stolyarevskaya (Russia), Young (USA) &endash; July 2004. - addition May 23, 2007 |
|
|
TR |
To produce a technical report for the measurement of optical properties of visible LED arrays and clusters, to derive optical quantities for large LED arrays and recommendations for measurement methods and conditions. |
|
|
Draft Report |
|
|
| Status- July 2007 |
There was no report available at the meeting of TCC will not be abel to proceed his work on this TC. We need a new TC chair to continue the work in this important field. |
|
|
Status- |
C met in Bejing, attended by 17 members and 50 observers. The definition of terms ‚ED cluster‚ and ‚LED array‚was discussed again. Participants (especially manufacturers and users of LED clusters and arrays) were asked to select typical objects that need to be characterized and provide corresponding drawings/data-sheets. Members are asked to make proposals on how to measure these artifacts in regard to quantities of interest to industry. The measurement conditions for total luminous flux, luminance, chromaticity and homogeneity, and spatial distribution should have highest priority. Whenever a significant amount of heat is produced, temperature at a representative reference point on object should be stated in addition to ambient temperature. | |
|
Status- |
The TC met on June 14, 2006 in Braunschweig with 64 participants. A first draft (Draft 1B) was distributed to members prior to the TC meeting. The meeting discussed definitions of some basic terms (modules, clusters, and arrays), how to measure photometric quantities (luminance, luminous flux, etc.) and how to describe uniformity in color (input from D1 suggested). It was requested that anybody with knowledge from other documents on definitions of terms e.g., in ISO, should contact the TCC. |
|
|
Status- |
The TC met in Leon, attended by 18 members and 18 guests. Schuette took over the chairmanship since last meeting in Tokyo. Email reflector was set up in March 2005. The first draft (Draft 1a, not complete) was distributed prior to the Leon meeting. The TC discussed scope, terminology, and two issues, 1) operating modes and 2) luminous intensity measurement. Normal far-field luminous intensity measurement will be included. Continuous and modulated operation modes shall be included in the scope while flashing light (covered by TC 2-49) and asynchronous pulses shall be excluded. The TCC asked for inputs from members, and hopes to update drafts before next meeting in Braunschweig. |
|
|
Status- |
The TC met on June 10, 2004 in Tokyo, attended by about 25 participants. G. Sauter announced his resignation as the TC chair and introduced J. Schuette as the proposed new chair. The change of the TC chair was approved by voting within the TC with no objections. The new chair ran the meeting. The TC discussed the issues to be addressed. It was agreed that many properties of LED arrays and clusters can (and therefore should) be measured in the same way as classical lamps. The TC should concentrate on quantities, effects or operating conditions where LED arrays and clusters have peculiarities. These are: 1. Measurement of luminance. 2. Effects of heating/self-heating. 3. Chromaticity. 4. Amplitude modulation. The scope should include signs and static displays, while dynamic displays are excluded. The TC member list will be reformed based on responses from the participants. An email reflector will be set up for continuing discussions. |
|
|
Status- |
The TC met in San Diego on July 1, 2003 with many attendees. Draft 1 (proposed contents and scope of the technical report) was presented and discussed. The TC agreed to cover combinations of structures of LEDs used for general illumination purposes as well as for signaling applications. But the scope will be limited not to include displays in the general meaning. Some terms to be defined were also discussed. The TC will collect more inputs from the manufacturers and users of LED clusters and arrays to start drafting the report. |
|
|
Status- |
No report received. |
|
|
Status- |
An informal discussion was held for about an hour right after the LED Symposium on May 12, with about 15 attendees. There were active discussions on definitions of LED cluster and necessary work to be done. Many new members were found, and further discussion will continue to form the plans for the document. |
|
|
Status- |
The start of the work delayed due to major changes of the companies of the initial TC members who proposed the TC. However, at the last ad-hoc meeting on LEDs on April 6th, we are given clear directions of what to do. The proposals in IEC (TC34-A) on photometry of white LEDs include measurement of clusters and arrays, and the photometry part should be handled by CIE &endash; this TC. There is standardization work in progress in Japan, and this TC will be in close contact with the Japanese group. The work is urgent and the TCC expects active participation and contributions by many members. The specifications of LED lamp sources will be covered by IEC34-A (lamps) but the aspect of photometry will be transferred to CIE, which was agreed at the last October meeting in Kyoto. |
|
TC2-51 Calibration of multi-channel spectrometers
|
Chair |
Richard Austin (USA) |
AD: Johnson |
|---|---|---|
|
Member |
T. Goodman (UK), G. Hopkinson (UK), S. Prince (UK), Pietrzykowski (Poland), R. Smith (USA), R. Bergman (USA) - to be updated |
|
|
TR |
To produce a technical report for the calibration of array spectroradiometers primarily for the determination of colorimetric and photometric quantities, including sources of error in array spectral measurements systems, evaluation of these errors, calibration methods and methods for the determination of uncertainty. |
|
| Status- June 2008 |
Since · Create a specific task list with members assigned · Conduct a Webinar based meeting in September · Schedule others based on the results of the items above Find a replacement TCC and schedule a transition time for a new TCC. |
|
|
Status- |
The TC met in Beijing with 39 attendees including 10 members. The member list needs to be updated. A new draft (Draft 2) was presented and discussed at the meeting. It was proposed to have changes in the terms of reference to focus the report more on photometric and colorimetric quantities. The changes were approved by D2 with no objection. New TR: Produce a technical report for the calibration of detector array spectroradiometers primarily for the determination of colorimetric and photometric quantities, including performance characteristics, evaluation of these characteristics, calibration methods and guidance in the application of methods for the determination of uncertainty. A few other changes in the draft were agreed at the meeting. It was also suggested to look at the materials from TC2-30. The TCC plans possible additional meeting to solicit inputs by the end of the year. |
|
|
Status- |
No report received this time. DD will ask TCC for update on this TC. If the TC keeps inactive, a new chairperson might be appointed. Peter Sperfeld was interested to take this on. Goodman mentioned a joint NPL-SIRA document on multi-channel spectrometers, produced several years ago, which could be used as a starting point. Hengstberger mentioned that a bibliography was produced before (though not published and probably outdated), which might also be looked at. |
|
|
Status- |
No report received. |
|
|
Status- |
No report this time |
|
|
Status- |
|
|
|
Status- |
No progress reported since the last meeting in Gaithersburg. The TC is to take over the materials from TC2-30 to consider use of these for the TC report. (See report for TC2-30) |
|
|
Status- |
The TC met on May 14 at NIST, prior to this D2 meeting, in conjunction with CORM CR-6 subcommittee. The meeting was attended by about 40 participants including many guests. A suggestion was made to include CCD array spectroradiometers, and the TC agreed to change the title to be "Calibration of multi-channel spectrometers", and TR also to be changed accordingly. A proposed table of contents of the report was distributed and discussed. Some new items were added after discussion. |
|
|
Status- |
The initial meeting will be held in Rochester in May 8-10 in conjunction with CORM2000. CORM has a new committee CR6 on this subject which Austin is assisting. A first draft planned before the Rochester meeting. |
|
TC2-52 Addendum to CIE 121 for the
Photometry of Emergency Lighting Luminaires
|
Chair |
Guy Vandermeersch |
AD: Vandermeersch |
|---|---|---|
|
Member |
Antonio Corrons (Spain), Allan Ottosson (Sweden), Reiner Rattunde (Germany), Christine Stratford (UK), Magchiels Armand (Belgium), Bruno Weiss (Germany), Lou Bedocs (UK), John Arens (USA), Giuseppe Rossi (Italy), Peter Raynham (UK) - revised June 2003 |
|
|
TR |
|
|
|
Draft Report |
<TC members only - Password
required> |
|
|
Feb. 2008 |
TCC sent Draft v5 (Oct. 2007) to the Editor requesting Division ballot. The draft was edited after discussion on a few points, and was sent to CIE CB on 2008.3.10 requesting Division/BA ballot. |
|
|
Status- |
he latest draft went through TC ballot, and was rejected by members from the UK because of a method used in the draft concerning the total luminaire luminous flux output which is not useable for lighting designers. As this method is based on an existing IEC standard, there is a difficult situation which must be solved. A revision of the IEC standard is in discussion but the progress is unclear. Therefore, it was discussed during the division meeting, whether a report with an appendix on the minority viewpoint may be a solution. Further discussions with members and manufacturers will take place in the near future |
|
|
Status- |
The draft document is ready to be sent to Editor prior to TC ballot. This document introduces methods for EBLF measurements on ballasts. The new concept of EBLF has been now accepted worldwide by emergency ballast manufacturers following the publication in October 2006 of IEC standard 61347-2-7 "Particular requirements for D.C. supplied Electronic ballasts for emergency lighting" |
|
|
Status- |
The draft document is at final stage. The task is being done in IEC. The Emergency Lighting Panel in IEC34 introduced a new parameter, emergency ballast lumen factor (EBLF). This factor is very low, near 10 %, and varies in time due to battery operation. At the London meeting, modification was made to introduce dynamic behavior of lamp in the first 15 seconds. This modification was accepted in IEC 34 in Oslo last September. Now the document is under national vote. This is a 16 page document. All the requirements of laboratory conditions, etc., are in CIE 121. As soon as this is accepted, the TC will prepare the addendum to CIE 121. |
|
|
Status- |
TCC plans both TC2-23 and 2-52 meetings in September 2004 in Brussels or France. He will start the final official enquiry within TC2-52 on the photometry of emergency lighting at the end of June, after the London IEC 34 meetings. The concepts he promoted regarding emergency ballast lumen factor are in a voting stage in IEC and as soon as approved, CIE can definitively publish the TC document. As he explained several times, IEC has the mandate to decide what to measure (the safety concept EBLF) and CIE should provide recommendations on how to make the measurements. As he was working in both bodies he could coordinate the two approaches. |
|
|
Status- |
The TC met in Veszprem in Berlin on 18 November 2002, and in San Diego on 30 June 2003. The TC work relates to work in D5, IEC and CEN. There has been good progress in IEC for the evaluation of lighting performance of emergency electronic ballasts by introducing the concept of emergency mode ballast lumen factor. This has been approved by IEC, but the document is still before voting stage. CIE TC 5-19 has also arrived to a final draft on emergency lighting. So no further delay is necessary for achieving TC2-52 work. Within TC 2-52 the draft 2b - June 2003 was examined and approved in San Diego. After consideration of all comments, it was agreed that a final draft 3 &endash; September 2003 would be issued for TC ballot. In parallel the draft will be submitted to D2 Editor. It is hoped that this technical report numbered CIE 121- Part 2-1 will be submitted for D2 ballot before next D2 meeting. |
|
|
Status- |
The TC met on Aug. 26 in Veszprem. The first draft was presented and discussed. The TC work relates to work in D5, IEC and CEN. There has been good progress in IEC. There were three international meetings and one workshop for the past year. There has been a good solution for evaluation of lighting performance of centrally supplied luminaires, a concept of emergency mode ballast lumen factor. This has been approved by IEC, but the document is still before voting stage. Regarding self-contained emergency luminaries, work is being carried out in IEC 592-2-22. The TCC intends to have another meeting in October in Brussels. |
|
TC2-53 Multi-Geometry Color Measurements of Gonio-apparent Materials
and Metrics for Evaluation
|
Chair |
Rösler (Germany) |
AD: Johnson |
|---|---|---|
|
Member |
Mike Pointer (UK), Maria Naddal (USA), Jerzy Pietrzykowski (Poland), George Andor (HU), Luise Rastello (Italy), Marta Klanjsek Gunde (SI), Irena Fryc (Poland), Allan Rodrigues (USA), Mike Nofi (USA), Danny Rich (SUSA), Shitomi (Japan), Thomas Dauser (Germany), Peter Gabel (Germany), Werner Cramer (Germany), Gorow Baba (Japan), Ellen Carter (USA), Harold VanAken (USA) - April 2003, - addition May 23, 2007 |
|
|
TR |
|
|
| Status- July 2008 |
At the meeting in Turin, it was reported that new instruments are available on the marked with new a evaluation method xDNA. During the meeting there was a discussion on a new terminology needed for out of plane viewing directions. Also the new content for the draft was defined. The decision is, to finish a part one without metric for evaluation. Part two for metrics will take some more time. Promising new method called xDNA released which will allow the separation of application variations from recipe variations It needs to be discussed whether the metric should be removed from the title to create a new TC or is it expedient to divide in part 1 and part 2. The TC plans to finish part 1 first and have a final draft for discussion in |
|
|
Status- |
The TC met in Beijing with 16 participants. The new draft 3a was presented and will be circulated to all members, but as many new guests were present at the meeting much time was spent for educational purpose again. It was decided that there will be no more education during future meetings. The terms of reference were discussed and the structure of the report. It was stated that it is important to define first the criterions when multi-geometry colour measurements are necessary. As an example, the multi-geometry colour measurements for a textured plastic sample was given, which shows considerable changes in colour and brightness depending on the aspecular angle. There is still a discussion in terminology how to describe the geometry in the best way while the differences between ASTM and CIE could be essentially solved in favour of CIE over the last year. Beside this, there is an urgent need for measured data of reference materials. During the discussion it was pointed out that, with respect to the determination of colour differences, still a lot of work has to be done especially if gonio-apparent materials are taken into account. |
|
|
Status- |
The TC met on June 15, 2006 in Braunschweig. A recommendation on angle notations proposed last year (to use angle relative to normal) was sent to ASTM, which they accepted. There was a question on the general CIE method of describing angles. DD clarified that relative to normal is the general convention, and it is in 2-39 document, which is now in Division ballot stage and close to publication. It was noted that activity continues in ASTM and DIN committees on the subject of this TC, with many common members from TC2-53. The draft report of TC2-53, which is now in accordance with the CIE template, has been distributed to members. The TC discussed additional contents for the report - normative references, requirements for calibration, instrument parameters, etc. Development of metrics will take some time, and the TC plans to publish a first report without metrics as Part 1, and Part 2 for metrics. It was suggested that a change of TR could be considered as an alternative method by which to narrow the scope of document. The TCC is advised to send a draft to Editor when it is substantially completed. |
|
|
Status- |
The TC met in Leon. It was proposed to change the title and TR, since the meaning of "effect materials" was found not clear. The D2 agreed on the new title: "Multi-Geometry Color Measurements of Gonio-apparent Materials and Metrics for Evaluation." The mew TR is "Write recommendations for the color measurement and evaluation of colorimetric properties of gonio-apparent materials," which D2 agreed with no objection. The TC also proposes to use notation of measurement angles relative to normal (according to the general practice in CIE), while ASTM uses notation of 0 to 180 degrees, and there is a serious confusion. The TC also proposes to introduce aspecular (AS) angle (angle relative to specular reflection angle) for measurement. DD proposed that she would write a letter to ASTM requesting them to adopt CIE recommended definitions of the angle notation. |
|
|
Status- |
No report given this time. |
|
|
Status- |
The TC met during ASTM meetings in San Diego on June 24, 2003. The TCC has started to put together a draft report on multi-geometry color measurements of effect materials, associated with color torelances. It will be a framework of the TC work and is a dynamic report until we have the first draft. It is a very active committee with 17 members. |
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|
Status- |
The TC met first time on Aug. 24 in Veszprem with many participants. It was a brainstorming session on what should be done by the TC, and what specific inputs are needed for the report. There was an agreement to start with a review of existing standards and protocols for measurements on metallic paints and pigments and effect materials, possibly including a measurement comparison. The report will begin with educational part and then measurement recommendations, including measurement geometry. The recommendations from TC2-39 will be used as the basis for any recommendations on measurement geometry. The TC will look at DIN and ASTM standards to find the classical description of geometric tolerances |
|
|
Status- |
Established at 2001 Gaithersburg meeting. |
|
|
Chair |
Cameron Miller (USA) |
AD: Norb Johnson |
|---|---|---|
|
Member |
Carl Andersen (USA), Norbert Johnson (USA), Christine Stratford (UK), Steve Jenkins (AU), Kai Sorenson (Denmark), Maria-Luisa Rastello (Italy), Vincent Ledoux (FR), Helmut Frank (DE), Shitomi (Japan) - Initial members. - addition May 23, 2007 |
|
|
Draft Report |
<TC members only - Password required> Draft 1 |
|
|
TR |
|
|
| Status- July 2008 |
The TC met in |
|
|
Status- |
The TC met in Beijing with 6 members present. There was much discussion on the scope and the purpose of this standard. The TCC will combine all further minor details during discussion into a Draft 1a which will be sent to the members which were not be able to participate. After discussion by email, a Draft 2 will be prepared, which should be ready for discussion during the next meeting in Italy. | |
|
Status- |
The TC met on June 14, 2006 in Braunschweig and reviewed the current draft. The definitions and measurement geometries were approved at the meeting. Much of the time was spent discussing the different measurement techniques available. The group agreed that different measurement techniques should be allowed if they can be shown to produce equivalent results. TCC agreed to perform experiments to resolve these differences in his facility at NIST. The TC members will communicate through email until the next meeting in Beijing. |
|
|
Status- |
The TC met in Leon. The TCC completed Draft 1 and distributed to TC members for review. The TC noted that there were some issues in CIE 54 that need to be looked at more closely. The TC discussed to ensure that definitions are correct since this is a standard and should be the point of reference for definitions. Based on the comments at the meeting, the TCC plans to revise the draft within a few months and have more complete draft ready by next meeting. |
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|
Status- |
The TC had its first meeting in May 2004 at NIST (in conjunction with CORM and ASTM E12 meetings), and the second meeting on June 9, 2004 in Tokyo. The outline of the document was discussed and agreed at these meetings. Fundamental terms were also discussed. Calibration techniques to be included are the relative method, absolute method, and substitution method. The TC discussed the requirements for the ISO standard. The TC plans to have the third meeting in September in Bern, Switzerland with D4. |
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|
Status- |
Established at 2003 D2 meeting in San Diego. |
|
|
Chair |
Alan Robertson (Canada) |
AD: Norb Johnson |
|---|---|---|
|
Member |
Bristow (Sweden), McGinley (Austria), Zwinkels (Canada), Rich (USA), Schanda (Hungary), Pointer (UK), Hirschler (Hungary), Ohno (USA) - updated May 2005 |
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|
<TC members only - Password required> |
|
|
TR |
|
|
| Status- July 2008 |
The TC was established at the 2003 D2 meeting in In addition to this formal report, the TCC raised an issue that the 1-nm values of D65 were linearly interpolated from the 10-nm values, which has been causing minor anomalies in colorimetric calculations. It was already addressed in CIE 15:2004 Appendix C with a suggested interpolation method. While TC 2-57 has no mandate to change D65 or to use a different interpolation procedure for D50, the TC discussed this issue through email communication, and agreed that this issue should be revisited before the TC2-57 start its work. Thus, the TC proposes to create a new TC in D1 to investigate the issue of smoothing the values of the D Illuminants and to propose a calculation method for new definitions of D Illuminants. During the D2 meeting, it was agreed that D2 supports this proposal, and will send a formal request to D1 to establish such a new TC. TC2-57 will be on hold until we have a conclusion on this interpolation issue. |
|
|
Status- |
With the publication of CIE S 014-2/E:2006 Colorimetry – Part 2: CIE Standard Illuminants in December 2006, the work can now begin. A first draft will be written within the next 6 - 12 months. |
|
|
Status- |
The TC was established at the 2003 D2 meeting in San Diego on the understanding that it would not start work until the current revision of S014-2 was completed. In October 2005, the CIE Central Bureau sent the latest draft of this current revision (CIE DS 014-2.3/E:2005) to NC for a letter ballot with a deadline of 2006-02-02. Once final approval is achieved, TC 2-57 will begin its work. DS 014 has only a few editorial issues to take care of and will be published very shortly. |
|
|
Status- |
The TC was established at the 2003 D2 meeting in San Diego on the understanding that it would not start work until the current revision of S014-2 was completed. The latest draft of this current revision (CIE DS 014-2.2/E:2004) has been approved by the CIE BA and CIE Division 2 and has been submitted to all CIE NCs for comments with a deadline of 2005-05-15. Once final approval is achieved, TC 2-57 will begin its work. |
|
|
Status- |
DS014-2 Colorimetry - Part 2: CIE Standard Illuminants is being revised to change the wavelength definition. This TC is waiting for this revision to be completed before it starts working. (After the meeting, the revision of DS014-2 for standard-air wavelength has been completed by the Editor, Secretary, and DD2, and the final document was sent to CIE CB in September.) |
|
|
Status- |
Established at 2003 D2 meeting in San Diego. |
|
|
Chair |
Kohtaro Kohmoto (Japan) |
AD: Georg Sauter |
|---|---|---|
|
Member |
Werner Horak (Germany), David Sliney (USA), Kathleen Muray (USA), Teresa Goodman (UK), Yoshi Ohno (US) + others to be agreed |
|
|
|
To prepare a CIE Technical Report setting out recommended measurement methods for the luminance and radiance of LEDs, taking particular account of the specific requirements of relevant photobiological safety standards |
|
| Status- July 2008 |
It was decided to modify the TR to focus more on the urgent photobiological safety issues. This change of the TR was approved by D2 with no objection. Moreover, it was also pointed out that the main focus of this TC should be effective luminance and how to make photobiological measurements for safety aspects. W. Horak already prepared some sections on this topic which should be included in the next draft. The TCC announced that the next meeting will be in |
|
|
Status- |
The TC met in Beijing with 72 participants. The TCC reported on the joined meeting of TC6-55 and TC2-58 in Ottawa last year. One major point discussed was the definition of terms: How to define LED luminance and its geometrical condition; How to define the photobiological (effective) illuminance. Draft 1 (2007-6-1) was discussed at the meeting. Among several points discussed, it was suggested to divide the report into a physical part (radiance, luminance, apparent source etc) and a part dealing with photobiological issues (like eye movement, actinic spectra, angle etc.), where the photobiological assessment of radiance is more important than that of luminance. It was also pointed out that D6 is waiting for results and that the progress must be enhanced. |
|
|
June 2006 |
TC met on June 15, 2006 in Braunschweig (3rd meting), attended by 51 persons. The TC reviewed previous meetings. This TC is for single chip LEDs, not including modules and arrays. The TC discussed table of contents, selection of terms for the definition section. The future action plan is to complete a 2nd draft and circulate it to members by the end of 2006. Members were requested to review and submit comments to the chairman by the end of March 2007. It was mentioned that TC6-55, chaired by W Horak, is investigating photobiological safety risks of LEDs. This TC will meet in September 2006 in Ottawa, and has invited TC2-58 members to attend. TC2-58 plans to have its next meeting in Beijing. |
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|
Status- |
The TC met in Leon. The TCC investigated a new commercial luminance meter designed to measure small size sources, and experimentally measured the luminance of several LEDs. The data were presented and discussed. Luminance of both 5 mm oval type LEDs and Chip on Board (COB) type LEDs (color: white, blue, green and red) were measured by using the luminance meter with close up lens. Actual measured values of luminance on the surface of LED chip (white type) were over 300 kcd/m2 (for oval) and over 600 kcd/m2 (for COB). Applicable procedure of these measured values to photobiological safety evaluation were discussed. It could be recognized that it will become more important to specify clearly measured area on LED chip for photobiological hazard evaluation. |
|
|
Status- |
The TC had its first meeting on June 10, 2004 with 38 participants. It was agreed that the TC would look only at single LEDs to begin with, and that both lensed and bare chip LEDs would be included. The TCC requested members to send comments and suggestions as soon as possible, so that a first draft can be prepared for the next D2 meeting. A contents list will be prepared within 6 months. |
|
|
Status- |
Established at 2003 D2 meeting in San Diego. |
|
|
Chair |
Udo Krueger (Germany) |
AD: Georg Sauter |
|---|---|---|
|
Member |
T. Bergen (Australia), D. Jenkins (USA), E. Manzano (Argentina), T. Naegele (Germany), Sunglim Park (Korea), P. Blattner (Switzerland), R. Distl (Germany), G. Heidel (Germany), U. Krueger (Germany), Y. Ohno (USA), G. Sauter (Germany), J. Schanda (Hungary), R. Young (USA), J O'Farrell (USA), J. Pan (China), J. Campos (Spain), Ron Rykowski (USA) |
|
|
|
To prepare a Technical Report on methods for the characterization of imaging luminance measurement devices. |
|
| Status- July 2008 |
During the meeting in Turin, there was an agreement to hold the f notation in all cases. (The new k notation proposal did not obtain support during the discussion.) If the current definitions (in CIE 69 or draft TC2-40) can be applied, the current numbering can be used. If a new index is necessary or a change in the definition is necessary new numbering shall be used, where wereHeree might use the range starting from number 20 for ILMDs. Values with no other remarks are stated to be average values (including the expanded uncertainty). There was also some discussion on the quality index for linearity and its measurement. A specific definition of f11 (range change) for ILMDs is necessary, because of the continuously adjustable integration time, and then a statement for a linearity evaluation while changing the luminance of the source is necessary. Regarding uniformity equations, there was an agreement on the basic kind of uniformity measurement proposed in WD08. The next meeting will be in Budapest 2009 | |
|
Draft Report |
<TC members only - Password
required> |
|
|
Status- |
The TC met in Beijing with 47 participants. A new draft was circulated just before the meeting. The most comprehensive input came from U. KrĂºger who presented his contribution during the TC meeting, including approaches for characteristics like scattered light (contrast) and linearity (f3). There was also a discussion about spectral measurements and nonuniformity effects, which has to be continued. P. Blattner asked to resign the chairmanship of this TC to be able to concentrate on TC2-40, and nominated U. Krueger (Germany) to take over the TC. Krueger agreed to take over the chairmanship of this TC, and it was approved unanimously at the D2 meeting. |
|
|
Status- |
The TC met on June 15, 2006 in Braunschweig, with 54 participants. Draft 0.3 was presented and discussed. The TC agreed on the structure of the document. There was a discussion about the model to be included in the Technical Report. Some preferred a "black box" approach, others like to have access to raw data so the calculations and evaluation can be done independently of the manufacturer. Manufacturers need to be able to provide characteristic indices of performance, but users need to be able to know how the data evaluation has been done in order to establish an uncertainty budget. There was a general agreement on having a mixed approach, including a chapter on the physical (internal) model of ILMDs. TCC will prepare Draft 1.0 for the next meeting (to be held in Beijing, July 2007) with the help of different coauthors. Feedback from members, who are willing to contribute, is requested. |
|
|
Status- |
TC had its first meeting in Leon. The TCC distributed two working documents (WG01 references, WD02 Basic considerations) in April 2005. The TC reviewed and discussed proposed structure of the report and terms and vocabulary. TC agreed to focus first on luminance, later on color or filtered-radiometric measurement. The TC will first look at characterization parameters in Pubs. 69 and 53, and then discuss more parameters specific for imaging photometers. The TCC asked members for contributions to the document. Next meeting is planned for Braunschweig. |
|
|
Status- |
Established in June 2004. |
|
|
Chair |
Emma Woolliams (UK) |
AD: Georg Sauter |
|---|---|---|
|
Former chair: David Gibbs (UK) till 2006. |
||
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Guenther (Germany), Ohno (USA), Robertson (Canada), Saito (Japan), Sauter (Germany), Schanda (Hungary), Sperling (Germany), Steudtner (Germany), Kohmoto (Japan), Hai (Malaysia), Zwinkels (Canada), Bastie (France), Scarangello (USA), Young (USA), Woolliams (UK), Goodman (UK), Baribeau (Canada) - rev. July. 2008 |
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To prepare a technical report that describes the effect of instrumental bandpass functions and measurement wavelength interval on spectrally resolved quantities and provide recommendations on suitable methods to minimise the error introduced by instrumental bandpass functions on spectrally integrated or weighted quantities. |
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| Status- May 2008 |
A third draft has been circulated to committee members. The main point of discussion is about how many different but similar bandwidth correction techniques should be included within the report itself. It is anticipated that a fourth draft will be prepared in time for the NEWRAD conference so that committee members attending that can discuss it in person. The next draft should be complete by the end of 2008. The committee has suggested that additional work is needed to discuss stray-light correction for array spectrometers, perhaps as a follow-on activity of this TC or as a new committee. | |
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2007 update |
An email reflector was created after Braunschweig meeting, and has been very actively used. All members have been confirmed and introduced, and Woolliams produced a first draft 1.0, with members then taking turns to add more contents. Draft 2.0 has been done by Gardner, and 2.1 by Schanda. |
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Status- |
David Gibbs resigned as the TC chair, as he was assigned to a role within NPL that is outside the field of optical radiation metrology. Gibbs thanked all the members of the CIE for the friendship that has been extended to him since his involvement with the CIE. Emma Woolliams of NPL offered to take over the chairmanship of the TC. Emma explained that she recently worked on bandpass correction, as presented at the Uncertainty Symposium. The change of chairmanship was approved unanimously. |
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Status- |
TC had its first meeting in Leon. TR was reviewed and agreed that the scope will include spctroradiometery of sources, spectrophotometry of materials, and spectral responsivity of detectors. Method of correction of bandpass will be included for mechanical scanning instrument as well as for array spectrometers. Draft layout of report was discussed and agreed with no objections. Ohno made presentation on his new method for correction of bandpass (presented at AIC'05 in Granada). The spreadsheet will be sent to committee members. The TCC plans to circulate a first draft later this year, and have next TC meeting in June 2006. |
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Status- |
Established in June 2004. |
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Chair |
Walter Steudtner (Germany) |
AD: Georg Sauter |
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Member |
Tony Bergen (Australia), Georg Sauter (Germany), Armin Sperling (Germany), Udo Krueger (Germany), Jiangen Pan (China), John O'Farrell (USA), Yuqin Zong (USA), Christina Boehme (germany), Ron Rykowski (USA), Pierre Boulenguez (France), Nadine Cariou (France), Stefaan Forment (Belgium), Walter Steudtner (Germany), Norbert Wagner (Germany) |
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To prepare a CIE recommendation on the methods for characterization and calibration of imaging-photometer-based near-field goniophotometers and for determination and conversion of photometric data of lamps and luminaries for both near-field and far-field applications. |
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Email reflector
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<TC members only - Password required> |
<TC members only - Password required> |
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Draft Report
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<TC members only - Password required> |
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<TC members only - Password required> Agenda CI TC2-62 Budapest June 02, 2009 (PDF) |
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| Status- July 2008 |
To study the differences in these approaches, presentations were given by Ron Rykowski from Radiant Imaging and Udo Krüger from TechnoTeam Bildverarbeitung. The TCC showed and distributed a list of literature provided by TechnoTeam regarding near-field goniophotometers and asked for further references. The table of contents for the technical report was presented and discussed. Any comments, additions should be sent to the TCC until mid of September 2008 to be integrated in these documents. Until end of September 2008 the work will be distributed to the TC members. Proposals for parts of the first draft of the Technical Report are due to end of January 2009 at latest and should be sent to the TCC. The first draft should be available to the next TC meeting. The next TC meeting will be held after the CIE Midterm Meeting in |
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2007 Status |
Established in 2007, Beijing. |
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Chair |
Yuqin Zong (USA) |
AD: Georg Sauter |
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Member |
to be updated |
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Develope a CIE recommendation on methods for the operation of high-power LEDs in DC and in pulse mode, at specified junction temperatures, for optical measurements |
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<TC members only - Password required> | |
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2008 Status |
Established in 2008, Turin. |
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Chair |
Guenther Heidel (Germany) |
AD: Georg Sauter |
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Member |
to be updated |
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To prepare a technical report on high speed testing methods for electrical, thermal and optical quantities during the production of LEDs and the conversion of the values to DC operational conditions including the related time-dependent funtions |
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<TC members only - Password required> | |
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2008 Status |
Established in 2008, Turin. |
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Archive of old records (1996-1999)