COMMISSION INTERNATIONALE DE L'ECLAIRAGE INTERNATIONAL COMMISSION ON ILLUMINATION INTERNATIONALE BELEUCHTUNGSKOMMISSION Division 2 Physical Measurement of Light and Radiation

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DIVISION 2: PHYSICAL MEASUREMENT OF LIGHT AND RADIATION

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2008-4-29

 

Closed TCs

TC No.	Title	Chair	Closed	Publication
TC2-04	Secondary standard sources	John Moore	2003	CIE 149
TC2-10	Photometry and Goniophotometry of Luminaires	Vandermeersch	1997	CIE 121
TC2-11	Gonioreflectometry of Standard Materials	Jack Hsia	1997	to be published in CIE news or collection
TC2-14	Measurement of Reflectance and Transmittance, Including Turbid Media	P. Polato	1999	CIE 130
TC2-16	Characterisation of the performance of tristimulous colorimeters	Janos Schanda	2007	CIE 179: 2007
TC2-22	Luminous Flux of High-Pressure Sodium Lamps	B. Garzo	1997	to be published in CIE collection
TC2-25	Calibration methods and photoluminescent standard for total radiance factor measurement	Joanne C. Zwinkels	2007	CIE 182:2007
TC2-26	The Relationship between Digital and Colorimetric Data for Computer-Controlled Color CRT Displays	Roy Berns	1996	CIE 122
TC2-30	Array radiometry	Jim Palmer	2002	absorbed in TC2-51
TC2-31	Methods of characterizing actinic radiometers	M. Poppe	1995
TC2-33	Reformulation of CIE Standard Illuminants A and D65 (revision of CIE/ISO 10526)	Klaus Mielenz	1998	CIE S 005
TC2-34	LED measurements	Kathleen Muray	1998	CIE 127
TC2-35 (S)	CIE Standard for V(l) and V'(l)	Klaus Mielenz	2004	CIE S 010/E:2004
TC2-36	Retroreflection: Definition and measurement (Revision of CIE publication 54)	Justin Rennilson	2001	CIE 54.2
TC2-38	Flare Photometry	F. Denner	1997	none
TC2-39	Geometric tolerances for colorimetry	Danny C. Rich	2006	CIE 173: 2006
TC2-41	Industrial Photometry in Developing Countries	B. Bhattacharya	1999	none
TC2-42	Colorimetric Measurements for visual displays	Ken Vassie	2007	none
TC2-45	Measurement of LEDs - Revision of CIE 127	Kathleen Muray	2007	CIE 127: 2007
TC2-54	Review of IEC documents for color measurement and management in multimedia systems	Janos Schanda	2002	moved to liaison
TC2-55	Round Robin Investigation of Implementation of CIE Photobiological Safety Standard	Kohtaro Kohmoto	2003	none
TC2-61	Spectral and Colorimetric Electronic Data Exchange	Mike Pointer	2006	none

No.	Title	Reporter	Closed	Result
R2-05	Visual Gloss	Mike Pointer	2003	TC1-65
R2-06	Standardization of Measuring Geometry for the Colorimetry of Metallic Coatings	Calvin McCamy	2002	TC2-53
R2-08	Detector-based Photometry	Yoshi Ohno	1993	TC2-37
R2-09	Absolute Cryogenic Radiometers	Al Parr	1999	no action
R2-15	Colorimetry of lustre pigments	Grosswang	1996	no action
R2-16	Optical multimeters	Richard Distl	1997	no action
R2-17	Aviation Photometry	Yoshi Ohno	1999	TC2-49
R2-18	OIML matters	Georg Sauter	2001	moved to liaisonn
R2-19	Emergency Lighting Luminaires	Lou Bedocs	1997,2000	TC2-52
R2-20	Vocabulary matters	John Moore	1997	TC2-44
R2-21	Use of detectors as absolute transfer standards for spectroradiometry	Nigel Fox	2005	no action
R2-22	Implementation of SI Photometric Units	Rainer Köhler	2000	no action
R2-24	Classification of color measuring instruments	Yoshi Ohno	2002	no action
R2-25	Liaison with IALA	Ian Tutt	2002	moved to liaisonn
R2-26	Eye Safety of Light Emitting Diodes	Teresa Goodman	2002	TC in D6
R2-27	Field Measurement for Traffic Signals	Carl Andersen	2005	no action
R2-28	Evaluation of Colorimeter Spectral Responsivity	Balázs Kránicz	2007	no action
R2-29	Characterization of imaging luminance measurement devices	Peter Blattner	2004	TC2-59
R2-30	Problems linked to correct measurement of TL5 fluorescent lamps with existing electronic ballasts	G Vandermeersch	2004	included in TC2-23
R2-31	Problems with the spectroradiometric measurement of light sources	David Gibbs	2004	TC2-60
R2-35	Uncertainties in Distribution Temperature Determination	A. Robertson	2005	Report written
R2-37	Industrial lighting requirements for a D65 illuminant	Etienne Pierson	2007	Report available

Title	Officer	Closed
OIML Optical Pyrometers	A. Parr
OIML Lum.& illum.meters	A. Parr
ICO	F. Hengstberger	1998
IMEKO TC2 Photonics measurement	J. Schanda	1998
ISO TC160/SC2/WG 2:Glass in buildings, Light & energy trans.	Jack Hsia	1999
IEC/ISO JTAG2: Joint Technical Advisory Group 2	Yoshi Ohno	2001
ISO TC 180/SC 1: Solar energy/Climate - Measurement and data	Dieter Kockott	2002

• ISO/IEC JTAG2 was dissolved in 2001. A similar function was established within ISO as ISO/SCIT (ISO Steering Committee for Image Technology)

   

TC2-04 Secondary standard sources

Chair	J. Moore (Great Britain)	AD: Sauter
Member	Bandyopadhyay (India), Corrons (Spain), Gaertner (Canada), Jiang (China), Low (USA), Metzdorf (Germany), Nishi (Japan), Schanda (Hungary)
TR	Produce a technical report on the selection and operation of stable secondary standard sources.
Nov. 02	CIE 149:2002 The use of tungsten filament lamps as secondary standard sources, published
Status- Aug. 02	Ballot process has been finished, and the document is ready for publication. Only one minor point on quality of photographic reproduction needs to be fixed.
Status- May 01	The TC has approved the draft Technical Report, and the CIE CB will shortly be circulating it for ballot by Division members and CIE BA. As reported at earlier Division meetings, it was decided to restrict the sources dealt with in this Report to tungsten lamps only. To reflect this, the title has been changed to "The use of Tungsten Filament Lamps as Secondary Standard Sources". Modern scanning techniques have made it possible to include in the Report a number of photographs, although, to keep printing costs down, none of these is in colour. Because of the very small number of companies who are prepared to manufacture and supply the special lamps used as secondary standards, the TC has also decided to publish in the Report a list of all the manufacturers known at present to be producing and supplying such lamps.
Status- Apr.00	A draft Technical Report has been circulated to the members of the TC for ballot. Provided that no serious objections are received, it is intended that the Division and Board ballot should take place later this year and it should then be possible to publish a CIE Technical Report on the selection and operation of stable secondary standard sources next year. It has already been decided to limit the coverage of the report to tungsten filament lamps. Because of the special nature of the hand-made lamps recommended for use as stable secondary standards, the report will contain a complete list of all the known manufacturers of such lamps. With recent rapid developments in digital scanning procedures, it has been possible to include a number of photographic illustrations in the report. These are not in colour, but as far as the TCC is aware, it will be the first time that photographs have been published in a CIE Technical Report.

Archive 

TC2-11 Gonioreflectometry of Standard Materials

Chair	J. Hsia (USA)	AD: Johnson
Member	Andor (Hungary), Bastie (France), Berns (USA), Bittar (New Zealand), Erb (Germany), Lozano(Argentina), Li (China), Nanjo (Japan), Ohno (USA), Verrill (Great Britain)
Terms of Reference	Study gonioreflectometric properties of standard white reference materials, including measurements and survey of published data.
Status 8/96	The draft was balloted by TC. There was a negative vote, citing needs for more international content. A decision was made to conduct an intercomparison between NIST and PTB, the data of which is to be included in the current draft. The new draft is to be finished by 1997 mid-term meeting. The report will be published in CIE Collection.
Status 9/97	The chairman proposed to close the TC, the reason being that the subject matter has already been published in the NIST Tech Note 1413, and also that the proposed additional intercomparison between NIST and PTB was not likely to occur in the near future. The chairman is to send the summary of the NIST Tech Note and publish a short report in CIE news or CIE Collection. The TC will be closed.

TC2-14 Measurement of Reflectance and Transmittance,

Including Turbid Media

Chair	P. Polato (Italy)	AD: Johnson
Member	Bianchini (Italy), Gundlach (Germany), Hsia (USA), Morren (Belgium), Verrill (Great Britain)
Terms of Reference	Define the standard geometric conditions for the measurement of transmittance and reflectance.
Status 8/96	The document was unanimously approved by TC and sent to Division Editor. Editing has been done resulting in extensive comments. The Editor will contact the chairman to discuss necessary changes.
Status 9/97	Division Editor reported. Since the document is fairly large because transmittance and reflectance are treated separately. Editing has been completed. There will be a Division ballot shortly.
Status 5/98	The document "Practical methods for the measurement of reflectance and transmittance" went through TC ballot. The document is now going to be sent for Board and Division ballot. CIECB is proposing to do electronic balloting using PDF file at an FTP site. Divi.2 supported this idea with no objection. Suggestion was made to include instructions how to download Acrobat reader (from Adobe website). A possibility of turning this document into CIE standard should be considered in the future. (Brep9807- The Division ballot is in progress. The BA ballot will follow.)
Status 6/99	The document has been published as CIE 130. The TC dissolved. (email from Dr. Polato, June 15, 1999)

TC2-16 Characterization of the performance
of tristimulus colorimeters

Chair	J. Schanda	AD: Sauter
Former chair: M. L. Rastello (~2004)
Member	Denner (South Africa), Goodman (Great Britain), Hengstberger (South Africa), Moore (Great Britain), Muray (USA), Ohno (USA), Rattunde (Germany), Robertson (Canada), T. Sakai (Japan), Sauter (Germany), Schanda (Hungary), Steindl (Austria), Terstiege (Germany)
TR	To produce a report recommending methods for assessing the performance of tristimulus colorimeter heads for measuring chromaticity coordinates.
2007	TC2-16 report has been published as CIE 179:2007 Methods for Characterising Tristimulus Colorimeters for Measuring the Color of Light. (2007-5-18)
Status- June 06	Draft 13 has been voted in favor by the TC, with one negative vote. Editorial comments were made by the CB and these have been incorporated in the draft. Unfortunately the Editor used an earlier draft for this editing, and using the CIE Template destroyed some earlier editorial corrections. The Editor tried to solve the negative vote mentioned above, but this produced some further questions. The Chair is now in contact with the Editor to sort out the still open question; it is anticipated that a further vote by the TC will be necessary before it can be circulated in D2 and BA. This document is very close to publication. It was also mentioned that CIE Colorimetry book will shortly be published from Wiley, and there is a chapter on tristimulus colorimeters, which may be useful.
After Leon	TCC prepared Draft 12 and sent it out for TC ballot (May 28, 2005) with deadline June 30, 2005. November 2005, after editing by Editor, Draft 13 distributed for check by TC members. December 2005, Draft 14 for minor editorial changes, requesting response only for objections.
Status- June 05	The TC met in Leon. The 11th draft was discussed chapter by chapter and participants agreed on minor changes to be made in the final draft. The TC agreed that Draft 12 will be sent for TC ballot, and if accepted, to Divisional and BA ballot.
Status- June 04	The TCC stepped down as she could no longer continue the TC work. Janos Schanda has agreed to take over the TC to finish the TC report draft and to go through the ballot process.
Status- July 03	A revised draft (7th draft) was sent to the editorial group (Goodman, Sauter, Schanda) within the TC in May 2001 and editing is in progress. After it is finalized by the editorial group, the draft will be distributed for TC ballot.
Status- Aug. 02	Document is near completion. At the last meeting in 2001, comments on the 6th draft were received and an editorial board was formed within the TC to prepare the final version for TC ballot. The TCC hopes to finish the document at San Diego meeting.
Status- May 01	The TC met on May 18 at NIST prior to this Division meeting with 12 members and 21 guests. The 6th draft was distributed and discussed. The current draft is mostly based on criteria defined in CIE 69. The TC agreed to try to publish the document with current contents and not to explore further methods for evaluation in various practical applications, which should be dealt with in a possible new committee. To finish up the document, an editorial WG is formed with members of Sauter, Schanda, Goodman, and the TCC. Next draft to be circulated for TC ballot.

Archive

TC2-22 Luminous Flux of High-Pressure Sodium Lamps

Chair	B. Garzo (Hungary)	AD: Vandermeersch
Member	Azaryonok (Russia), Bastie (France), Bertrand, Burghout (Netherlands), Chen (PRC), Foerste (Germany), Gaertner (Canada), Gale, Goodman (Great Britain), Juan (Spain), Juntunen (Finland), Moore (Great Britain), Otto, Roempler, Rossi (Italy), Steindl, van Dam.
Terms of Reference	Conduct an intercomparison of luminous flux measurements on high-pressure sodium lamps.
Status 8/96	The data will be retrieved from the chairman to CIECB. G. Andor and J. Moore will try to contact the chairman.
Status 9/97	The TC chairman has moved to another organization. A collection of papers relating to the intercomparison has been retrieved and was handed to the Division Editor at the meeting, but these are incomplete. The Editor agreed to prepare a short report, based on the available material, for publication in an appropriate CIE Collection. The TC is closed.

Chair	K. Ganesha (India)	AD: Vandermeersch
Member	Andor (Hungary), Arens (USA), Austin (USA), Bastie (France), Chang (Taiwan), Dibbern (Germany), Eppeldauer (USA), Gardner (Australia), Goodman (UK), Hengstberger (S. Africa), Moore (UK), Muray (USA), Ohno (USA), Rennilson (USA), Ritzol (USA), Sauter (Germany), Sojourner (USA)
TR	Prepare a user's guide for the selection and use of illuminance and luminance meters.
Draft Report	Members only (password requred) A User's Guide for selection of Illuminance and Luminance Meters (3rd partial draft, Feb. 2000)
Status- July 2003	No new activity since 2000. The contact with K. Ganesha has been lost for more than a year.  DD is to try to establish communication with K Ganesha through Hari Mamak.  It was agreed that the TC will be closed if the contact with the TCC cannot be re-established and if no volunteer to take over the chairmanship. <Note> Discussion with Hari Mamak confirmed that the TCC is no longer active in this field and has no interest in continuing the work. It was therefore agreed at the Board meeting that the TC should be closed, unless a volunteer is found quickly &endash; anyone with an interest in chairing this TC should contact DD urgently.
Status- Aug. 02	The draft is now completed but there are some cosine response problems to discuss. The TCC planned to have a virtual meeting to distribute the draft, but this has not yet taken place.
Status- May 01	A brief report from the TCC was received by Secretary by email on May 8. The TCC reports that the draft is under completion, with only two chapters remaining. He hopes to complete the two chapters by the end of June and try a virtual meeting. He has included the constructive suggestions sent by the members last year and made the contents more concise and simple.
Status Apr.00	The TC has completed the draft of the first two chapters out of eight. The responses for the circulated drafts of these are just being received. Very good constructive comments have been received from some of the members and more are expected soon after the members find themselves free from the heavy work of the D2 meeting. The TCC proposes to hold virtual meetings on Internet and complete the work within a year at best and submit the final draft to the Division. The TCC has observed that some international brands of cheap lux meters of very poor qualities are mass-produced and sold with low prices with attractive presentations. As such, there is a great and urgent necessity to complete this users guide at the earliest. The TCC requests all the D2 members even those who are not presently the members of the TC to participate actively in the TC work. The drafts circulated already are on the web and the members can send their comments.
Feb 2, 00	3rd Draft - outline and list of contents
Status- 6/99	The chairman had some trouble with communication in the past, but he has now obtained his own e-mail address and hopes to be able to communicate better. He is awaiting responses to his letter of June 1998 sent to TC members. Response so far has been disappointing. AD Goodman encourages the attendees and TC members to contact the TC chairman to provide him with more input, in order to get the committee work in progress and to produce this important document. Contact by email will be the most rapid way forward. The chairman's new mail: research74@mantraonline.com < Secretary note>The chairman sent out another letter with proposed table of contents and a questionnaire form at the beginning of June 1999.
Status 5/98	A letter from the chairman was received by Secretary prior to the meeting. The chairman reports as follows. He has not been receiving any responses, from the members of the TC, on the draft outline circulated in April, 1997. He presumes that the current TC members do not appreciate urgent need for the guidelines of the draft. The chairman has prepared the third draft outline but needs some data to be collected from the users at large. He has prepared a questionnaire for wide circulation. He is mailing these along with a brief note on the need for the guidelines, a copy of a paper presented by him in the ISLE Symposium in New Delhi in Jan. 1997, with additions by 10th June, 98. An advance copies of these papers will be sent by May 30th. The program will go now with a strict time schedule requesting every member to respond within a given date. Depending on the response received by 15th of July, the TC will be formalized and further communications sent. The chairman hopes to complete this work by Warsaw Session.
Status 9/97	A proposed outline of the document was circulated. Working on preparation of a new draft, aiming at fairly basic, "down to the earth" guide to the use of illuminance and luminance meters in industrial, rather than scientific laboratory measurements.
Status 8/96	The chairman changed after the India meeting. The new chairman received all the materials of the TC and is preparing to restart the TC to publish the document. The next meeting is planned for 1997 in South Africa.

TC2-25 Calibration Methods and Photoluminescent Standard
for Total Radiance Factor Measurement

Chair	J. Zwinkels (Canada)	AD: Johnson
Member	Bristow (Sweden), Erb (Germany), Leland (USA), McCamy (USA), Nayatani (Japan), Puebla (Germany), Racz (Hungary), Simon (USA), Witt (Germany), Peter Clarke (NPL)- revised Aug. 2002
TR	Prepare a CIE report on methods for measurement of total radiance factors of photoluminescent materials. Recommendations for realizing and calibrating photoluminescent standards by the one and two-monochromator method will be included.
Draft Report	Members only (password requred)
2007	CIE CB has received completed draft and is preparing to start Division/BA ballot. (2007-5) CIE 182:2007 Calibration methods and photoluminescent standards for total radiance factor measurements, published 2007-12-17.
Status- June 2006	A final version of the TC Report (Draft 12) was prepared by the TCC that incorporated the input of TC voting and editorial comments by TC members for Draft 11 and a revision of terms in the section on Terminology (Section 1.2) to make them consistent with the new fluorescence terms published in the CIE Standard on the Assessment of the Spectral Quality of Daylight Simulators for Visual Appraisal and Measurement of Colour (CIE S 012/E:2004). TCC has sent this final draft to the D2 Editor and he has completed the editorial review of this document. The revised draft (Draft No. 12.2 dated 2006-06-06) is now ready to be sent for Division ballot.
Status- May 2005	The TC document was sent for TC ballot right before the San Diego meeting and was unanimous approved with some comments. These comments have been incorporated as editorial changes. A number of new terms on fluorescence are defined in the document, and they were sent to the Editor for review for submission to ILV. It was also noted that there were a lot of terms on fluorescence defined in TC1-53 (spectral quality of daylight simulator; published last year), and as a result of the harmonization efforts (with help of Editor and Secretary), there were slight revisions in some of the terms in the 2-25 document. Since the changes are considered all editorial, D2 agreed that the revised document to proceed on to Division ballot.
Status- June 2004	The TC last met in June 2003 in San Diego, in conjunction with the Quadrennial meeting. The TCC has largely completed the revision of the TC report, incorporating the recommendations from this meeting. Due to other pressing commitments, this work was not completed by the target date of October 2003. The new target date for completion of this document (Draft 12) and submission for Division ballot is October 2004. The fluorescence vocabulary terms from TC 2-25 were sent to the D2 Editor for inclusion in the revised ILV. Upon request from the CIE CB, the CIE draft standard DS012.2E "Standard method of assessing the spectral quality of daylight simulators for visual appraisal and measurement of colour", prepared by TC 1-53, was reviewed with regards to clarifying the fluorescence terminology. Recommendations were made and accepted to revise the terminology to be consistent with the usage in TC 2-25.
Status- July 2003	The TC met on July 1, attended by 3 members and 5 advisors, and 14 observers.  The 11th draft was distributed on May 16 for TC vote for deadline 23rd of June.  TCC received 5 ballots from members and two from advisors.  There were four approvals, one approval with editorial change, and two abstained.  TCC also distributed the 11th draft to chairs of TC1-48 (revision of CIE 15.2) and TC1-44 (practical daylight sources) for which these TCs have liaisons.  The TC meeting discussed the comments received in the ballot and managed to get through substantial comments.  TCC started to revise the TC report based on these inputs. TCC will send the 12th report to Div. Editor, then to Div. Ballot for target date, October this year.  There are many new terms in the document, which will be sent also to Div. Editor so they can be included in the revised ILV.
Status- Aug. 02	The TC last met in May 2001 in Gaithersburg. The meeting was attended by seven TC members and ten observers. The ninth draft of the TC report was discussed. Input was received on: properties and availability of additional fluorescent material standards, additional details of NPL spectrofluorimeter, and editorial changes to list of references. There was considerable discussion regarding terminology and notation; in particular, the need to consistently distinguish between fixed and variable measurement parameters. It was proposed to include an Appendix in this TC report, containing a cross-reference of notation in current use for quantities relevant to fluorescence measurements (ASTM, F. Clarke and K. Mielenz). This proposal was circulated to TC members for comment and approved. This stimulated the TCC to carefully review the document to ensure that notation was clearly defined and consistently implemented. These revisions have been made by the TCC and the document (tenth draft) is currently undergoing final review before being circulated for TC ballot. This work should be completed before the next quadrennial meeting in San Diego.

Archive

Chair	P. Wychorski (USA) - Jim Palmer	AD: Johnson
Member	Abasari (Hungary), Andoh (Japan), Goodman (Great Britain), Jones (USA), Mihailov (Russia), Pfleger (Austria), Sauter (Germany)
Terms of Reference	Prepare an annotated bibliography for the CIE journal on diode array radiometry. Make appropriate recommendations for future work in diode array radiometry.
Status 8/96	The bibliography document still needs a little more work. The document will be published in a printed introductory document and a disk which contains all the bibliography. The chairman will be contacted by CB and Associate director about final publication format.
Status 9/97	The chairman requested resignation from the TC chair due to increased work load. The Secretary will contact the chairman and try to retrieve the draft document. A decision for further action is to be made at the next D2 meeting in Boulder.
Status 5/98	The chairman, Wychorski, has resigned due to his increasing work load. But, he was present at the meeting, and gave a report. The document is currently the 4th draft, having 78 pages in 3 sections. None of them is copyrighted. Small part of the document is not complete. There is also a separate database file with about 800 entries of references. This data base is copy-righted, and payment is needed for use. About 1/3 of the references are in the written document which is not copy-righted. There was discussions, and Div.2 agreed to publish the document in the CIE Collection coming up at the end of the year. Whychorski will work with AD Johnson to publish this document in the Collection. (After the D2 meeting, James Palmer (Univ. Arizona, USA) agreed to take over the chairmanship to finish up the document for publication. )
Status- 6/99	The chairmanship has changed to Jim Palmer after the Boulder meeting. The previous chairman, P. Wychorski, sent the TC documents and materials to the new chairman just recently. The new chairman is to start the work to finish the document and publish it in a CIE Collection.
Status Apr.00	This TC was reassigned to Jim Palmer in 1998. No information has been received from him this time.
Status- May 01	No report received from the TCC. No activity reported since Palmer took over from Wychorski in 1998. Some of the contents of the bibliography are getting outdated and need to be reviewed again. A suggestion was made to move this work to TC2-51 (by R Austin) and possibly incorporate this into the 2-51 document if appropriate. AD Johnson is to contact Austin to request that he study this option more closely and make a recommendation on whether it is feasible / desirable.

Archive

TC2-33 Reformulation of CIE Standard Illuminants A

and D65 (Revision of CIE/ISO 10526)

Chair	K. Mielenz (USA)	AD: Johnson
Member	Hsia (USA), Moore (Great Britain), Robertson (Canada), Terstiege (Germany), Verrill (Great Britain)
Terms of Reference	To rewrite CIE Standard S001 in terms of thermodynamic temperatures, and in a manner such that the spectral distributions of the standard illuminants are preserved, but are independent of international temperature scales.
Status 8/96	The draft was balloted and approved by TC. National committee ballot is in progress. In the process of German translation by H. Terstiege, changes were suggested to remove the word "standard" before sources, and to make clear the secondary status of Illuminant C and other D illuminants relative to the International Standard sources A and D65. This suggestion will be considered by Editor and CIECB.
Status 9/97	The document was circulated for NC ballot and received some negative comments. Division Editor had a meeting with Schanda, Johnson and Hardis on Sept. 3 and agreed on changes to meet some of the objections. Division Editor will contact the TC chairman to inform him of the changes and the amended document ill be circulated again for a second NC ballot.
Status 5/98	The final national committee ballot is complete, and the document has been published as CIE S 005 "CIE Standard illuminants for colorimetry". Voting by ISO members for a joint ISO/CIE Standard is in progress. This document will supersede the ISO/CIE 10526. This TC is closed.

TC2-34 LED Measurements

Chair	K. Muray	AD: Goodman
Member	Angerstein (Germany), Bym (USA), Carr (USA), Distl (Germany), Goodman (Great Britain), Heidel (Germany), Hwang (Taiwan), Jones (USA), Lester (USA), Moore (Great Britain), Ohno (USA), Rastello (Italy), Sauter (Germany), Scarangello (USA), Schanda (Austria), Schumacher (Germany), Sojourner (USA)
Terms of Reference	To investigate and recommend standard LED measurement methods including parameters to be measured.
Status 8/96	There were an editorial meeting of the TC in London, March 1996 and a TC meeting in Vienna this time. The third draft was circulated and discussed. The recommended measurement conditions for luminous intensity, which had been removed in the last draft, were discussed again and the TC agreed to include them in the document. The intensity averaged for 0.01 sr and 0.001 sr is recommended, and a new term, averaged LED (luminous or radiant) intensity, will be introduced. These and other changes will be made on the next draft, which will be sent to the Editor before TC ballot.
Status 9/97	The final draft (4th draft) is in the hand of CIECB. TC ballot is in progress, with deadline Sep. 21. After the Division ballot, CIECB plans to publish the document before the CIE LED Workshop starting Oct. 24, 1997, unless the document is voted negative. Revision is planned in a few years, and a follow-up TC may be established.
Notes 1/98	CIE Workshop on LED Measurements was held at CIECB in Vienna, October 22-25, 1997, which included two-day tutorials. The new document to be published was introduced to about 50 participants. The discussions at the workshop lead to some more work to be done for further standardization of measurements. The Division ballot for the document was completed in October with no negative votes. The Technical Report has been published as CIE Pub.127-1997.
Status 5/98	A CIE Workshop on LED measurements was held in October 1997, and after the Workshop, the TC document was published as CIE 127. The new term Averaged LED Intensity is introduced in the document. More work is to be done on the total flux measurement and spectral measurement, and a follow-up TC may be necessary. Jones commended the work by the TC referring to the usefulness of the CIE 127 in industry. Ohno and Scalangello commented on the need for further standardization on LED total flux (forward or partial flux) measurement. Sauter added that this LED document (luminous intensity part) should be published as a CIE/ISO standard. In any case, as the document has been published, this TC is now closed. The follow-up work should begin under newly proposed TCs (See Section 8).

Chair	J. Rennilson (USA)	AD: Johnson
Member	Arens (USA), Couzin (USA), Dibbern (Germany), Heenan (USA), Hubert (France), Johnson (USA), Kramp (Germany), Nanjo (Japan), Price (UK), Schmidt-Clausen (Germany), Sorensen (Denmark), Terstiege (Germany), Werner (Sweden) &endash; revised, August 1999.
Terms of Reference	To revise and update publication 54. To standardize test methods and measurement geometry for measuring the photometric and colorimetric properties of all types of retroreflectors under both day and nighttime conditions. To prepare this CIE document in ISO format to be issued as a joint CIE/ISO standard.
Status 8/96	TC met in Sweden, in June 1996. The first draft was made. TC plans to meet again in October 96 in order to involve some interested members from Division 4. The current TC is producing a technical report. The terms of reference (which refers to CIE standards) will be changed accordingly. By his letter, the chairman urged the need for coordination of meetings between Div. 2 and Div. 4. (The TC met in Poitiers, France on Oct. 18, 1996 in conjunction with Div. 4 meeting. The chairman hopes to have a TC-approved draft at South Africa meeting.)
Status 9/97	The TC met on Oct. 18, 1996 in conjunction with Division 4 meeting, inviting Div. 4 people. After the meeting, the 6th draft was prepared. The TC met on Sep. 3 in Durban to discuss the draft, which is close to completion. The document is planned for a Technical Report, CIE pub. 54.2, and later, a shorter version is to be published as a CIE/ISO standard. Schanda raised a concern with the copyright with the CEN226 document. Although the CEN-CIE agreement is forthcoming, the chairman is to send the draft to CEN officially.
Report Feb.7, 98	A 7th draft is being prepared and all members are on the innernet with correspondence on the draft being passed via e-mail. The goal is to complete a draft to be voted on by the committee members at the Division 2 TC meeting in Boulder, Colorado in May, 1998. Pending any changes the draft will be sent to the editor of the Division, John Moore to review and then sent on to the Division for voting.
Status 5/98	The TC met on May 18 in Boulder, for two hours, with 6 members and 10 observers. The 8th draft report was distributed and discussed. The new draft incorporates the comments for the 7th draft which were previously distributed. A few sections need improvement, and a further version to be prepared for discussion in Bath, October 1998, after which, the document is to be approved by TC. The chairman plans a short meeting in Warsaw, too. The liaison with CEN is maintained only through the members of the TC who also serve on CEN committees. There has been no official liaison function established, and the work of this TC is not recognized by CEN at the moment. Some official channels of communication need to be established at the top level of CEN and CIE.
Status- 6/99	The TC has made much progress and is nearing completion. The TC just sent out the 12th draft for TC ballot. Two ballots were received back with comments and one negative vote. The TC met again this time in Warsaw and resolve these comments. New wording is to be added in the draft. The draft has also been edited by the Editor with many comments. A bibliography will be worked on and completed within one month. Next draft to be sent for Division ballot around August. The TC has agreed in the committee level that this committee is not to produce ISO/CIE standard. It is probable that a new committee will be proposed to produce standards based on this document.
Comm. 8/26/99	14th draft has been completed and approved by the TC. The TC Activity report has been submitted to the Secretary.
Status Apr.00	The TC has 15th draft after 8 years. The TC finished last work in Warsaw and went out for Division ballot in last September. Some members did not receive the copy. There was no negative votes but were several comments. The TC met on April 7, and spent 3 and half hours to make relatively minor changes. The 15th draft to be finished and to be sent to editor and then to CB for publication. This concludes the TC work and there will be probably no more meetings. However, important aspect is to prepare a standard from this TC. It should be the responsibility of a new committee with a new chairperson to publish a CIE/ISO standard.
Status- May 01	TCC received from CIE CB a copy of the final print of the 62-page document except color figures, with a few editorial comments. The rationale for the color figures, for the first time in a CIE document, is due to the complexity of visualizing the three dimensional systems and geometries for measurements of retroreflection. The document is to be published shortly. A recommendation was made to start a new TC to produce an ISO/CIE standard from the new document (CIE 54.2). The TCC thanked Editor Moore for his tremendous work for editing.

Archive

TC2-39 Geometric Tolerances for Colorimetry

Chair	D. Rich (USA)	AD: Johnson
Member	Baba (Japan), Bittar (New Zealand), Decarreau (France), Fisch (USA), Hanssen (USA), Jordan (Canada), Johnson (USA), Kravetz (USA), Ladson (USA), Terstiege (Germany), Pietrzykowski (Poland), Verrill (UK), Zwinkels (Canada). Consulting member: Erb (Germany).
TR	Compile a technical report and recommendations specifying the geometric tolerances for the various geometries in colorimetry, including 0/45, 0/d and others. Parts of this technical report may be suitable for inclusion in a CIE standard specifying several geometric tolerance levels.
2007	The TC report was published as CIE 176:2006 "Geometric tolerances for colour measurements." (2006-12-28)
Status- June 2006	The final report from TC2-39 has been accepted in Division/BA ballot, but with a long list of comments - mostly editorial in nature from Schanda. Technical comments related primarily to the figures - which a TC member had promised to fix for three years but never did. TCC will attempt to have them re-drawn. TCC has completed about 50% of the work needed to address the comments and editorial changes. After this editing is done, the report will be published.
Status- May 2005	Document was approved by the TC ballot, and has gone to Editor. Secretary received the document from TCC, which still needed minor editorial work. After fixing the problem, the document will be sent for the Division ballot. (The last draft was sent for Division ballot on Feb 23, 2006 with a deadline of 2006-5-22)
Status- June 2004	A new draft was prepared and distributed to committee members for approval in the spring of 2004. Replies were to be received by the D2 meeting in Japan. As of September 1, 2004 there have been no new contributions or negative comments from the committee. It is thus the intent of the TCC to review the current draft for style and form and then submit to the DD and Editor.
Status- July 2003	The TC met in San Diego on 1 July of 2003.  Six members and ten guests were present.  Two new drafts of the committee report (Drafts 5 and 6) have been circulated since the last meeting in May 2001. Draft 5 received many useful comments from the committee, and all were implemented in Draft 6. The revised report was distributed again, and comments received from G. Baba (member) and K. Imura (guest).  These and several other issues were discussed at San Diego meeting.  Based on the comments at this meeting, a 7th draft will be prepared.  The chairman will solicit the information volunteered by the attendees and will issue a new draft by the fall. It is hoped that the final report can be distributed for Divisional ballot by the end of 2003. (Further details are available in the Activity Report of TC2-39, July 1, 2003 -PDF file)
Status- Aug. 02	After the last meeting in Gaithersburg, a fourth draft was prepared and circulated by the TCC around June 2002. The DD added that NPL has been doing some work on geometric tolerances and had fed some data to the TCC.
Status- May 01	The TC met for the seventh time on May 14 at NIST, prior to this D2 meeting, jointly with CORM OP-2 committee on Geometry. Five committee members and 21 guests were present. A third draft had been distributed to the committee members by email and its revisions were discussed. Some progress was made in coming to consensus about certain portions of the document. A most important decision was made to restructure the document to better emphasize the "definition" of the recommended geometry then place the committee's experimental data and literature citations afterwards, indicating why there must be tolerances around the defined geometries. The report will then conclude with a section describing tolerances or allowed variations on the recommended geometries. Improved figures and plots are still needed to make the document more understandable. Several visitors to the committee have volunteered to provide some input to the committee concerning ways to test or validate the specifications of the recommended geometries. The TCC is planning on having a fourth draft of the document with the revised structure and new information out for committee review by fall of 2001. If all promised inputs are returned to the committee chair in a timely fashion then the fifth draft will be the final draft of this report and recommendation.

Archive

Chair	B. Bhattacharya (India)	AD: Goodman
Member	Chanchanchop (Thailand), Goodman (Great Britain), Moscati (Brazil), Ohno (USA), Sastri (India), Sauter (Germany), Ye (China)
Terms of Reference	To prepare a Technical Report giving guidance on recommended practices for photometric measurement (including sphere photometry and goniophotometry), taking account of the special requirements of industrial laboratories in developing countries.
11/95	TC established at the New Delhi meeting.
Status 8/96	The chairman is collecting more members. He plans to have the first meeting next year in South Africa.
Status 9/97	In an attempt to find an affordable solution for obtaining low-cost reliable standard lamps for sphere photometry, experiments have been conducted for the past year in a reputed laboratory in India to establish the reliability of indigenously manufactured lamps from components imported from developed countries. The outcome of the experiment is encouraging. A draft report on the finding of this experiment is under preparation.
Status 5/98	No report received from the chairman this time. This TC was established in 1995. If no progress is made by 1999 D2 meeting, this TC may be closed.
Status- 6/99	There has been no substantial activity since the establishment of the TC in 1995, and we have no contact from the chairman for the last two years regarding the work of this TC. Thus it is suggested that this TC be resolved unless we have other proposals for solution.

TC2-42 Colorimetric Measurements for Visual Displays

Chair	Ken Vassie (UK)	AD: Johnson
Member	Andor (Hungary), Berns (USA), Dalton (Great Britain), Fairchild (USA), Ikeda (Japan), Hardis (USA), Leone (USA), Max Lindfors (Finland), Luo (Great Britain), Maelfeyt (Belgium), MacDonald (Great Britain), McFadden (Canada), Munger (Canada), Reid (Great Britain), Schanda (Austria), Stokes (USA), Shimizu (Japan), Stienstra (Netherlands), Ohno (USA), Vienot (France) - update April 2, 2000 - member change May 23, 2007.
TR	To produce a Technical Report summarizing recommended practice for the measurement of the colorimetric and spectroradiometric properties of visual displays.
Draft Report	Members only (password requred) Recommended Practice for the Measurement of Colorimetric and Spectroradiometric Properties of Visual Displays (2nd draft, Apr 2001)
2007	Closed.
Status- June 2006	Following the proposal last year, Ken Vassie of NPL has taken over the chairmanship from Christine Wall. With many other standards on displays already available (e.g. from SAE, ISO, and VESA), Vassie began by reviewing these and considering again the need for the TC. He noted that CIE is often referred in these standards as the basis for the development of specific methods. The VESA FPDM is currently the key display standard used in the industry, but this document is very much an engineering document. There is a need for more formal and scientifically-precise document for the type CIE is known for, to augment and complement VESA standard. There are also several new standards in emerging OLED, LCD displays, and the TC should review these emerging areas. Vassie suggests that TC2-42 should continue for these reasons, but notes that progress will be over several years. The TC will focus on aspects that are different from other standards and avoid duplicating them. The existing TC draft document will be re-examined and rewritten. It was suggested that cooperation with Division 8 needs to be formalized or maintained.
Status- May 2005	The TC has a fairly complete draft. Unfortunately, the TCC can no longer continue the Chair. DD suggested Ken Vassie at NPL for a new chair, who is responsible for display measurement. There were no other volunteers suggested. DD will ask Vassie to take over the TC officially.
Status- June 04	No report received this time.
Status- July 03	No report given this time.
Status- Aug. 02	No report made.
Status- May 01	The TC met on May 17 at NIST prior to the D2 meeting. The meeting was attended by 6 members and around 30 guests. The Second draft (distributed in April 2001) was discussed including comments from Baribeau, Hanson, Laur and Macfadden sent by email. Several major revisions to the document were discussed including a complete review of chapters 4 and 5 to reduce duplication. The TCC asked for volunteers to further review the sections of the document. The committee had planned to produce the next draft in a few months, with final version of the document due by the end of the year, however the scale of revisions means that this tight time scale will be extended. The TCC will circulate an amended schedule, and revise the document to include comments from this meeting. Following that the chapters will be circulated to volunteers, before the 3rd draft is launched for general comment.

Archive

TC2-45 Measurement of LEDs - Revision of CIE 127

Chair	Kathleen Muray (USA)	AD: Sauter
Member	Austin (USA), Bando (Japan), Balta (USA), Berkhout (USA), Bouman (Netherlands), Budzinski (South Africa), Bym (USA), Carr (USA), Distl (Germany), Ellis (USA), Fleischer (USA), Gan (Singapore), Halkin (Belgium), Heidel (Germany), Jones (USA), Kohmoto (Japan), Larsen (Denmark), Marchl (Germany), Moore (UK), Myers (USA), Ohno (USA), Rastello (Italy), Sauter (Germany), Scarangello (USA), Schanda (Hungary), Solomon (Taiwan),Stolyarevskaya (Russia), Webb (USA), Young (USA) - revised Jul.2000
TR	Revise CIE Pub. 127 to include improved definitions of quantities and methods of measurement for total flux and partial flux of LEDs and to reevaluate other parts including spectral and color measurements of LEDs.
2007	The final draft was distributed for Division/BA ballot in September 2006, and closed in December 2006. The document was approved with several editorial comments. TCC and Ohno worked on final editing, with CIE CB. The report was published in March 2007 as CIE 127:2007 Measurement of LEDs (2nd ed.)
Status- June 2006	Muray reported. The TC met on June 14, 2006 in Braunschweig. Draft 6 had been circulated for TC ballot from January to March 2006, and was approved by 18 TC members with no negative votes. Numerous comments were received from several members, which were implemented into a final draft, Draft 7a, and distributed to members again, prior to the Braunschweig meeting. After final checking, the draft will be sent for Division and BA ballot. The TC meeting discussed several outstanding issues that have not been covered in the present document, and thus form the subject for reportership 2-36 (Heidel). These are mainly related to measurements for production control and thermal issues for high power LEDs. See the section of R2-36 for further details.
Status- May 2005	TC met in Leon. Draft 5 was distributed to TC members and to the Editor, who edited the document. Several comments were received and minor changes on a few paragraphs were discussed at the meeting. Three members will send revised paragraphs within two weeks. The document will then be sent for TC ballot. (Draft 6 for TC ballot distributed with deadline March 31, 2006.)
Status- June 2004	The TC met on June 10, 2004 in Tokyo, attended by about 40 people. Draft 4 was prepared by the TCC and Ohno and distributed in December 2004. The new draft has a lot of additions as compared with CIE 127, including new methods for evaluating the V(l) match of photometers, the definition of Partial LED Flux, recommended geometries for integrating spheres, introduction of the use of spectroradiometers for photometric measurements as well as color measurements, etc. At the meeting in Tokyo, some of the new additions were discussed. There was a proposal by Schanda for another method for evaluation of the V(l) match of photometers (presented at the Symposium), in addition to the two methods already proposed in the draft. Attendees seemed to prefer Schanda's method to the other two methods. The TCC and Ohno will investigate this method further. The TC also discussed the Partial LED Flux and agreed on the definition in the current draft. There was not enough time to discuss other parts of the draft. The TCC requested further comments on Draft 4 by e-mail within four weeks (middle of July) to produce the next draft.
Status- July 2003	The TC met on July 1, 2003 in San Diego. The TC is working on three issues; 1) total/partial luminous flux measurement, 2) evaluation of photometer V(l) match, 3) conditions for spectral radiometric measurement.  The TC came to a consensus on the first two issues. The TC agreed to define CIE LED partial flux that is measured with an integrating sphere with an entrance aperture of a defined diameter, where the solid angle is calculated from the tip of the LED lamp. For evaluation of the V(l) match of photometers, f-LED proposed by R. Young was discussed, but it was not adopted. The TC agreed to keep f1' as general method, and add another index for LED measurements, which is an average of spectral mismatch errors for several LEDs of different colors (similar to traditional f1). The details on the partial flux geometry and the formula for the V(l) match evaluation will be worked out and put into the next draft. The spectral measurement issue will be discussed by e-mail. There was another issue - measurement of radiance of LEDs for photobiological safety, which was requested from D6. There was a presentation by W. Horak at the meeting. After some discussion, the TC agreed that it is a difficult issue crossing D2 and D6, and that it should be handled in a separate TC.
Status- Aug. 02	There was a request from D6 for guidance on the measurement of the radiance of LEDs. TC2-45 will cover radiance as well as other quantities that the TC has already planned to include. Bare chips should alsobe covered. Ddiscussions had taken place on the used of f1-LED to evaluate the V(l) match of photometer heads, proposed by R. Young, but no conclusion had yet been reached.  TC also plans an intercomparison of spectral measurements of LEDs, and there were some discussions regarding this by email reflector.

Archive

TC2-54 Review of IEC documents for color measurement and management in multimedia systems

TC2-55 Round Robin Investigation of Implementation of CIE Photobiological Safety Standard

TC2-61 Spectral and Colorimetric Electronic Data Exchange