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

TC2-04 Secondary standard sources

Chair	J. Moore (Great Britain)	AD: Goodman
Member	Bandyopadhyay (India), Corrons (Spain), Gaertner (Canada), Jiang (China), Low (USA), Metzdorf (Germany), Nishi (Japan), Schanda (Hungary)
Terms of Reference	Produce a technical report on the selection and operation of stable secondary standard sources.
Status- 8/96	The draft is about to go out to TC ballot. A section on the specific problems in developing countries is added as suggested at the India meeting. The document will be circulated by the end of the year.
Status- 9/97	The document was about to go out for TC ballot, but one national member expressed concern about the choice of photographs used to illustrate the various types of lamp. The TC chairman feels that illustrations are essential in a document of this kind and is to discuss the problem with various interested parties in the hope of resolving the problem.
Status- 5/98	The greater part of the report has been completed for some time. Objections were made in Durban relating to planned photographs and illustrations, which might be able to be identified. Increasing the number of different types of lamps illustrated may solve this. Chairman plans to circulate for TC ballot at the end of June.
Status- 6/99	The draft has now been done for TC ballot. If there is no objections, it will hopefully go to Division ballot within next few months. The document has a few photographs.

TC2-16 Characterization of the performance

of tristimulus colorimeters

Chair	M. L. Rastello (Italy)	AD: Goodman
Member	Denner (South Africa), Goodman (Great Britain), Hengstberger (South Africa), Moore (Great Britain), Muray (USA), Ohno (USA), Rattunde (Germany), Robertson (Canada), Sauter (Germany), Schanda (Hungary), Steindl (Austria), Terstiege (Germany)
Terms of Reference	To produce a report recommending methods for assessing the performance of tristimulus colorimeter heads for measuring chromaticity coordinates.
Status 8/96	TC met in New Delhi. The current draft includes three methods to characterize the quality of the spectral responsivity. No progress is reported since then. The draft should be ready for TC voting soon.
Status 9/97	The TC met on Sep. 3 and 5 in Durban. The third draft was discussed. The chairperson asked for written comments within 2 months from all TC members to prepare the final draft for TC ballot.
Status 5/98	Report given by P. Soardo who held a TC meeting for Rastello on May 18th in Boulder with about 30 participants. The fourth draft (changes marked on the third draft) was distributed and discussed. Suggested changes will be compiled by the chairperson to make the fifth draft, which will be distributed before Warsaw Session when the next TC meeting is planned.
Status- 6/99	The TC had several meetings in the past, but not this time because the chairperson preferred to circulate the draft to TC members only at this stage. However, some useful information has been obtained from the conference and meetings of TC2-40 and TC43 (both TC chairs are the members of TC2-16). Their contribution will be taken into account in the next draft. The chairperson plans to get comments by September, and hopes to have another revision in November, then if members agree, to have TC voting.
Status- Apr.00	The TC had a meeting on April 7th. The 5th draft was discussed. There was not enough time to go through the document. We discussed a proposal by Ohno to evaluate spectral response properties by using CRI. Some in favor, some against. There was an alternative suggestion by Schanda to use metamerism index, which is to be investigated. Schanda will discuss this with the Chair on this by email. The Chair expects commetns on the draft and the proposals from the TC members to be reflected into the next draft.

TC2-17 Recommendation for integrated irradiance and

spectral distribution of simulated solar radiation

Chair	D. Kockott (Germany)	AD: Goodman
Member	Aydinli (Germany), Goodman (Great Britain), Ignatiev (Russia), Justus (USA), Kaase (Germany), Kasten (Germany), Kok (South Africa), Wilkenson (Australia), Zerlaut (USA)
Terms of Reference	Revise and update CIE Publication No.20 (1972)
Status 8/96	First part of the document was published as Pub. No.85 (1989), "Solar spectral irradiance." The second part has been prepared as a technical report draft "Solar simulators for Testing Purposes" The draft will be circulated for comments.
Status 9/97	A new draft 'Solar simulators for testing purposes' has been prepared and circulated to the TC. The chairman has now requested that the document be circulated to all D2 members for comments before editing and TC ballot, in order to ensure that a wide range of applications is considered. It was agreed that since the document was very short, CIECB would in this case distribute it by mail. In general, however, such circulations should be done by the Secretary, by email.
Status 5/98	The draft document 'Solar simulators for testing purposes' was circulated to all D2 members for comments following the Durban meeting, to ensure a wide range of applications was considered. This has generated some response and the chairman is now preparing a revised draft.
Status- 6/99	18 months or so ago, the chairman sent out the draft document (on solar simulators for testing purposes) to the whole Division. He got some responses but not very much. The chairman would still like to have more input from TC members or from those with an interest in this subject. AD Goodman requested that anybody who has comments on or interest in the document should contact the chairman by e-mail. Goodman will also contact the chairman to ask him to send his draft to the Secretary so that the document can be posted at a hidden webpage for wider distribution.
Status- Apr.00	No report received.
Status- May 01	No report received.

TC2-19 Measurement of the Spectral Coefficient of Retroreflection

Chair	N. Johnson (USA)	AD: Johnson
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)
Terms of Reference	Identify the critical measurement parameters, tolerances, and requirements for, and conduct an international intercomparison of, the spectral coefficient of retroreflection.
Status 8/96	The TC met on 30 August in Vienna. The third draft was discussed. The document is separated in two parts. Part 1 contains the procedures of measurements and the summarized results of the intercomparison. Part 2 contains all the individual data of the intercomparison. Part 1 will be published as a CIE report, and Part 2 will be retained as CIE Archive. The draft be finished by next Div.2 meeting.
Status 9/97	The TC met on Sep. 3 in Durban. The third draft of the document was discussed. The next draft will be sent for TC ballot. The intercomparison data (250 pages) will not be included in the report, and decision is to be made on what to do with the data. The TC would like to see the Technical Report made available in disc form.
Status 5/98	The TC document is mostly finished. Some data are to be included in the document. The chairman plans to send the final draft for TC voting by Warsaw Session. Further TC meetings are not planned.
Status- 6/99	The completion of the TC document is delayed due to a strong request for one more set of data to be included. The chairman expects to obtain the data shortly and finalize the analysis to prepare the final draft for TC voting this year.

TC2-23 Photometry of Street-Lighting Luminaires

Chair	G. Vandermeersch (Belgium)	AD: Vandermeersch
Member	Arens (US), Blaser (Switzlerland), Blochouse (Belgium), Claassens (NL), Corrons (Spain), Price (Great Britain), Rattunde (Germany), Rossi (Italy), Simons (Great Britain), Sorensen (Denmark)
Terms of Reference	Prepare a technical report on the photometry of street lighting luminaires.
Status 8/96	The chairman will start working on this TC after the work for TC2-10 has been finished. The chairman will look for TC members from Division 4 also.
Status 9/97	The chairman, having just finished TC2-10, will start working on this TC. Collaboration with Division 4 is requested.
Status 5/98	No report this time.
Status- 6/99	This TC has not started its work yet because, the TC waited for the results of the intercomparison within Europe, which started in 1996 and finished just at the end of last year. The project for intercomparison of luminaires started three years ago with the support of the European Commission. Two types of luminaires were used, one with 260 W HPS and another with fluorescent tubes. The intercomparison measurements have finished. Provisional results are available. There are no problems in measurement compatibility. There are problems in measurement of street lighting luminaries, due to aiming difficulties. There are large differences in luminous intensity distribution. A meeting was held with the 12 participants. The draft paper is to be distributed by end of the year and then the paper is to be published. The participants of this intercomparison to be the initial TC members, but it was planed to try to attract members from countries other than Europe as well. Anybody interested in this TC should contact the chairman.

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), Verrill (Great Britain)
Terms of Reference	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.
Status 8/96	The TC met in May 1996 in Orlando and in Vienna this time. 4th draft was prepared and discussed. Next meeting will be either in conjunction with AIC Japan (May 97) or ISCC in Baltimore (Sep. 97). (The 5th draft of the TC report was distributed in November 1996.)
Status 9/97	TC met last in August 96, Vienna. The 5th draft of the TC report was distributed in Nov. 1996. The TC will meet in Oct. 1997, at ISCC meeting, Baltimore. The draft after the next meeting may be sent out for TC ballot.
Status 5/98	The TC met on 18 May in Boulder. The 7th draft, distributed in Feb. 98, was discussed. The document is essentially complete. Outstanding action items are: inclusion of figures, editorial changes, expansion of Appendices in Section 3.2 on Two Monochromator Methods, and inclusion of Serial Filter Method in Section 3.1 on One Monochromator Methods. The next meeting is planned in conjunction with ISCC and TAGA Annual Meeting, May 5-7, 1999, Vancouver, B.C. The 8th draft of the document should be ready for TC voting.
Status 6/99	The TC met May 6, 1999 in Vancouver, B.C. in conjunction with the Inter-Society Color Council meeting. Five TC members and 2 observers were in attendance. The eighth draft of the TC report was distributed and discussed. Figures have been added and equation, table and figure numbering have been edited to conform with CIE guidelines. Remaining action items are some minor revisions to the text and to re-group the references at the end of the document. The revised document (ninth draft) will be circulated for TC ballot. (email from TC Chair, 6/15/99)
Status- 6/99	The TC met May 6, 1999 in Vancouver, B.C. in conjunction with the Inter-Society Color Council meeting. Five TC members and 2 observers were in attendance. The eighth draft of the TC report was distributed and discussed. Figures have been added and equation, table and figure numbering have been edited to conform with CIE guidelines. Remaining action items are some minor revisions to the text and to re-group the references at the end of the document. The revised document (ninth draft) will be circulated for TC ballot.
Status Apr.00	The TC last met in May 1999 in Vancouver, B.C. in conjunction with the Inter-Society Color Council meeting. The eighth draft of the TC report was discussed. Revisions were received to Section 2.1 on FWAs in Textiles and Paper and it was recommended to condense the information in Section 4.3 on the Effect of Instrument Polarization and to remove the description of the fluorescence-weakening method in Section 3.1 of the One Monochromator Methods. The other suggested changes were largely editorial in nature and include grouping the References together at the end of the document. These revisions are currently being implemented by the Chairman and the revised document (ninth draft) will be circulated for TC ballot by the Fall of 2000.
Status- May 01	The TC met on May 19 for 3.5 hours at NIST, and discussed Draft 9 that was distributed on May 4. Discussion focused on terminology and notation. Several action items were identified and some members volunteered to send input for these by mid July. 10th draft is targeted for TC ballot in September this year.

TC2-28 Methods of characterizing spectrophotometers

Chair	J. Verrill (Great Britain)	AD: Goodman
Member	Andor (Hungary), Bastie (France), Berns (USA), Distl (Germany), Eckerle (USA), Konstantinova (Bulgaria), McCamy (USA), Robertson (Canada), Sugiyama (Japan), Ulyanov (Russia), Zwinkels (Canada)
Terms of Reference	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.
Status 8/96	The draft will be ready and circulated for TC ballot by end of the year.
Status 9/97	Third draft is almost ready with all the chapters complete. Most figures and references are available, but a few more need to be added. Expect circulation of the 3rd draft by the end of 1997.
Report May 5/98	The third draft was circulated to committee members in April. The text is now complete and the figures and references have been added. We shall need one more draft prior to voting and then a 5th draft for the vote. We should have completed the vote sometime before the end of this quadrennium.
Status 5/98	The third draft was circulated to TC members in April. The text completed by the chairman and figures and references have been added. It is expected that there will be one more draft before voting and then a 5th draft for the vote, which should be completed before the end of this quadrennium.
Status- 6/99	The progress has been delayed slightly due to poor health of the chairman. The 4th draft is nearing completion and will be circulated within the next few months. If there are no major changes, the 5th draft will be circulated for TC ballot in the autumn this year. The chairman is retiring from NPL in June 1999, and has appointed a TC Secretary, Peter Clarke (NPL, UK) to assist him in incorporating comments from the last draft, and all the figures and references have now been added. Contact to the TC chairman can be made via TC secretary: Dr. Peter Clarke, NPL, UK (email: peter.clarke@npl.co.uk). <Secretary note> The chairman, Mr. John Verrill, passed away on June 29th. P. Clarke is expected to take over this committee.

TC2-29 Measurement of Detector Linearity

Chair	T. Goodman (Great Britain)	AD: Goodman
Member	Andor (Hungary), Bastie (France), Bittar (New Zealand), Budde (Canada), Distl (Germany), Dezsi (Hungary), Mihailov (Russia), Mostl (Germany), Ohno, Parr (USA)
Terms of Reference	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.
Status 8/96	TC met in India. There was no progress since then. Additional references on measurement methods are investigated. First draft will be circulated next year.
Status 9/97	The TC met on Sep. 3 in Durban, discussed the latest draft. Some revisions needed and some text to be added. Finish sections on detector types, presentation of results, references and diagrams. Next draft planned for December 1997.
Status 5/98	A brief TC meeting was held on 18 May 1998 to summarize current status and request additional inputs by the end of June in order for the third draft to be prepared for circulation in early November. Comments on the third draft will be requested by the end of the year.
Status- 6/99	Progress has been slow during the past year, due to a reorganization of the chairman's responsibilities. However, this is now resolved and work on the third draft is now well underway. The third draft should be sent to TC members within the next few months.
Status Apr.00	This TC has not progressed much in the past year. The TCC finds it exceedingly difficult to finish this work, and suggests to find another chairperson. Jean Bastie will consider taking the chair. The TCC will wait for his decision.
Status- May 01	As reported last year, the TCC is not able to continue this TC work due to her increased workload. Last time, Jean Bastie was suggested as a new TC chair but he is unable to take over. The TC has a fairly advanced draft. The TCC is looking for someone willing to take over the chairmanship.

TC2-32 Measuring Retroreflectance of Wet Horizontal Road Markings

Chair	N. Hodson (USA)	AD: Johnson
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) &endash; revised August, 1999
Terms of Reference	To prepare a guide for the methods of measuring coefficient of retroreflected luminance (specific luminance) of horizontal road markings under wet weather conditions.
Status 8/96	The chairman, Thomas Bradshaw (USA), resigned at New Delhi meeting. No new chairman has been found yet. Associate Director will look for a chairman at Div.4 meeting in October.
Status 9/97	The chairman, T. Bradshaw (USA), resigned in 1995. A new chairperson was sought, and a candidate, Mr. Hudson from 3M Company, USA, was found. Division 2 agreed on the new chairman. He will take over the TC after approval by CIEBA.
1/98	New chairman approved. - BA Report Jan.13,1998.
Status 5/98	The new chairman, Hodson, has taken over the TC. The TC met on May 18th in Boulder with 11 participants. The partial draft document was distributed and discussed. The TC is looking for new members who have expertise on rain simulation area and visibility pavement marking. The TC plans to meet again this year in October in conjunction with the Div. 4 meeting in Bath, England, hopefully to attract Div.4 people. The TC also plans to meet in Warsaw in 1999.
Status- 6/99	The TC had the second meeting on Monday 28th June in Warsaw. The TC agreed on a rough draft with outlines of chapters and sections. There were active discussions on a lot of issues, which have become a good input for the next draft. The TC plans to do annual testing, later this year or spring next year, to do actual measurements on wet pavement markings. Some TC members volunteered to update several sections of draft.
Status Apr.00	The TC had a meeting in Warsaw. They plan a meeting and outdoor testing at the end of May in Denmark to look at wet reflectivity of pavement markings. The subject was divided into measurement of retroreflection of pave markings after rain fall and, the other is during rain fall. Testing procedures proposed are addressing questions on those two aspects. These are highly related to work of Division 4 as well. The TC will probably have a TC meeting in conjunction with Div.4 in Sep. in Toronto. They have a draft document and expect revisions after the May experiments and the Toronto meeting.

TC2-35 CIE Standard for V(l) and V'(l)

Chair	K. Mielenz (USA)	AD: Johnson
Member	Bastie (France), Gardner (Australia), Hengstberger (South Africa), Moore (Great Britain), Ohno (USA), Parr (USA), Robertson (Canada), Sauter (Germany), Schanda (Hungary)
Terms of Reference	To prepare a new CIE Standard on the present V(l) and V'(l) functions.
Status 8/96	The draft was edited by Division Editor which resulted in extensive change of document format. The edited draft was circulated, and some major questions and comments were raised (not necessarily due to change by Editor). Ad-hoc meeting was held by Div.2 Secretary on 30 August in Vienna to obtain more comments and opinions by other members. At Div.2 meeting, change of the title of the documents was suggested, to make it similar to the title of the TC. The next decision is left to the chairman.
Status 9/97	The chairman received comments (to the edited draft) from the TC members and from the ad-hoc meeting held on Aug. 30, 1996. The chairman, the Secretary, and G. Sauter met at NIST on Oct. 18, 1996 to discuss the issue related to CIPM raised by Sauter. We agreed that Sauter send to the chairman a rewrite of the scope of the document for further discussion on this issue. The chairman agreed to prepare a further version of the document as soon as he has received the comments from Sauter and will circulate the document again to all TC members.
Status 5/98	No report received from the chairman. Sauter reported as an active member. There was a problem of the document status interfering with the competence of CCPR. Sauter had a discussion with the CCPR president, and in January this year, sent to the chairman suggested changes to the document to solve this problem. The Secretary added that, according to recent conversation with the chairman, he is working to revise the document, once again, to respond to Sauter's comments as well as many other comments he received from several other members after editing in 1996 by the Editor. The document will go through another voting.
Status- 6/99	the TC document "Photometry - The CIE System of Physical Photometry" has been edited by the Editor, and is now ready for Division ballot. However, before the ballot, the final document will be circulated one more time to TC members for information.

TC2-37 Photometry Using Detectors as Transfer Standards

Chair	Y. Ohno (USA)	AD: Johnson
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), Muray(USA), Pietrzykowski (Poland), Rattunde (Germany), Rastello(Italy), Sauter (Germany), Schanda (Hungary), Sojourner (USA), Wychorski (USA)
Terms of Reference	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.
Status 8/96	TC met in Vienna this time. The third draft was discussed. All the technical contents were basically accepted by attendees. Some technical details and terminology were suggested for change. The draft will be revised again incorporating comments made at the meeting. TC ballot is planned before Div.2 meeting in 1997.
Status 9/97	The fourth draft was prepared after the last meeting in Aug. 96, Vienna. The TC met on Sep. 3 in Durban to discuss the latest draft. Except for disagreement in the use of a few terms, the TC agreed on the technical content of the document. After resolving the terminology issues, the next draft (5th draft) is planned for TC ballot.
April 13 1998	The 5th draft was distributed to all members. A short TC meeting is scheduled in conjunction with CORM98/CIE Div.2 meeting in in May 1998, Boulder Colorado, USA.
Status 5/98	The TC had a short meeting on May 18 in Boulder with 38 participants including 13 members. The fifth draft was distributed and discussed. The new draft was previously distributed to the members in April. The draft is complete except for correcting some wording and bringing consistency in usage of a few terms. The W0 issue will wait for an advice from the CCU. The chairman plans to send out the sixth draft for the TC ballot within a few month.
Status- 6/99	The last meeting was in Boulder, and now the draft is close to completion. Progress was slow on this TC due to the chairman giving priority to the work of his other committee (TC2-49). The draft will only need changes of wording of several terms to give clearer definitions. This will be done in the next few months and the next draft is expected to be circulated for a TC ballot.
Status Apr.00	The 6th draft is almost finished. Some terminology issues were resolved. The section for method for measuring reference plane has been rewritten to include an absolute method and some precautions in practical measurements, e.g., to use a sphere source. Next draft, hopefully a final version before TC ballot, to be circulated shortly.

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). &endash; revised June 1999.
Terms of Reference	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.
Mar. 27/00	Shared documents - Members only (password required) baba-paint.zip, baba-neut.zip, Baba-BCRA.zip
Status 8/96	TC met twice this year, in the US, and 30 August in Vienna. As the TC is preparing a technical report rather than CIE standard, change of Terms of Reference is proposed. Div.2 agreed on the change and will be submitted for Board approval. The proposed TR is: 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.( The change of the TR was approved by Board meeting in Sept. 1996)
Status 9/97	The TR has changed as proposed at Aug. 96 meeting in Vienna. The TC met on Sep. 3 in Durban. An Interim activity report (Sep. 3, 1997) was distributed. Literature of the subject has been collected and reviewed. The current working program is to utilize ISO 5/1 and ASTM E 1767, and to define specifications of reflectance factor (t/8, d/8, d/0), radiance factor (45/0) and transmittance geometries (0/0, d/0). Specifications will be developed via computer simulation and verified experimentally. A need for liaison with TC1-48 (revise Pub. 15.2) was addressed. The chairman is to be on TC1-48.
Status 5/98	The Committee met for the fourth time on May 18th in Boulder. Four Committee members and six guests were present. Discussions during the meeting resulted in the following actions: 1. There was a general agreement that the use of the terminology "bidirectional" should be reserved for instruments with nearly parallel rays and multiple angles of illumination or view. The normal 45/0 instrument has biconical beams and the committee recommends that the change in notation be communicated to Michael Pointer, editor of Publication 17.3. 2. Comments from guest C. McCamy indicated that the current CIE tolerances are tolerancing the wrong information. Based on publications from the NPL, the tolerances for 45°/0° will result in maximum color differences of 3.0 CIELAB units. Tightening the tolerances will result in improvements in the color differences but tolerancing the uniformity of the illumination and viewing cones will result in a greater improvement. 3. ASTM standard 1763 recommends the use of a very small sampling aperture to verify the uniformity of the specimen port. It was recommended by the committee that the committee report include recommendations for using a sampling aperture of physical and angular size (1/20) of the specimen aperture. The committee will also try to include a recommendation for a material standard for testing the uniformity of hemispherical geometry. 4. C. McCamy requested that the report make a clear distinction between the surface reflectance and the specular reflectance. During the next few months, the chairman will prepare a draft of the final report and distribute the draft to committee members for comment. NIST and 3M have volunteered to supply some measurement data on standard materials to verify the effect of tightening the tolerances. The TC plans to meet at Warsaw in 1999.
Status- 6/99	The Committee met for the fifth time just prior to the CIE Division 2 meeting in Warsaw. Five committee members and six guests were present. In reviewing the terminology, it was agreed that the final report would have a separate section on terminology. The action items shown in the 1998 Activity Report had not been fulfilled due to the change of the chairman's affiliations and also to no actions by other members. After discussion on the current draft, the TC agreed on changes on five points. During the next few months, the chairman will prepare a second draft of the final report and distribute the draft to committee members for comment. The next draft will be written and distributed by 15 December 1999. The committee desires to hold the next meeting in conjunction with the ASTM B-12 Color and Appearance meeting, to be held in Toronto, Canada in June of 2000. The TC may not be meeting during the Division meetings at NPL in April 2000. (TC2-39 Activity Report, 29 June, 1999 was later submitted.)
Status Apr.00	The TC met for the sixth time on 7 April in Teddington. Three committee members and twelve guests were present. Discussed the requirements to continue revisions of the first draft report. Discussed in Warsaw that we need some experimental verifications of some of the tolerances and definitions that the TC is making. One of the member sent 8MB data and begun to analyze it. Hanson also sent some data. Unfortunately other things that we agreed to add have not been submitted and we are 18 months behind. The TCC hopes to have another draft in fall, and next year to have document close to finish. See Attachment 4 for the TC Activity Report and Minutes of the Meeting, 7 April, 2000 submitted by the chairman.

TC2-40 Characterizing the Performance of

Illuminance and Luminance Meters

Chair	R. Rattunde (Germany)	AD: Goodman
Member	Austin (USA), Bastie (France), Czibula (Germany), Dezsi (Hungary), Goodman (UK), Khandelwal (India), Khanh (Germany), Mahidharia (India), Moore (UK), Ohno (USA), Pietrzykowski (Poland), Saito (Japan), Sauter (Germany), Stolyarevskaya (Russia), Xu (Singapore), Ye (China) &endash; revised July 1999
Terms of Reference	Convert the present CIE Technical Report No. 69 into an ISO/IEC 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.
Status 8/96	TC met in India. The chairman plans to produce the first draft by December this year, collect comments by April, and to discuss the second draft at the next Div.2 meeting.
Status 9/97	The TC met on Sep. 3 in Durban with 14 participants. First draft was discussed. 80 % of the proposed contents were included. The next draft will be rewritten in the ISO/CIE standards format, including additional contents. The chairman requested further written comments on the current draft. Some errors in Pub. 69 are to be corrected in this document (Schanda). Liaison with OIML TC14 should be considered. Next meeting planned for Boulder.
March 26 1998	The 2nd draft was distributed to all members. A TC meeting is scheduled in conjunction with CORM98/CIE Div.2 meeting in May 1998, Boulder Colorado, USA.
Status 5/98	The TC had a successful meeting on May 18th with 35 participants. Discussed the second draft which was circulated in March. There were active discussions with many comments from the attendees. The TC added some new members. The chairman requested the attendees to send further comments on the draft within a few months. The third draft will be prepared for discussion at Warsaw Session.
Status- 6/99	The TC had its 4th meeting on June 28th in Warsaw with 26 attendants. 9 of the 16 members had been present. The chairman presented the 3rd draft of the document which included some of the comments of the last meeting in Boulder 1998. No further written comments had been received by the chairman from the members since then. The TC discussed the general contents of the document and finally made a decision on the further treatment of the document. According to this, the chairman will submit a ballot per e-mail to the members and ask for opinions whether to modify the title, introduction chapter, or scope of the document together with text proposals within the next 2 months. (The draft will be posted at a hidden website by the Secretary.) The chairman will add the modifications according to the majority opinions into the draft and submit it to the Associate Director for further processing by the CIE. Next meeting will be held in conjunction with CIE D2 in spring 2000, at NPL, London, UK if necessary. (The minutes of the Warsaw TC2-40 meeting was later distributed.)

TC2-42 Colorimetric Measurements for Visual Displays

Chair	A. Hanson (Great Britain)	AD: Goodman
Member	Andor (Hungary), Berns (USA), Dalton (Great Britain), Fairchild (USA), Ikeda (Japan), Hardis (USA), Leone (USA), Luo (Great Britain), Maelfeyt (Belgium), MacDonald (Great Britain), McFadden (Canada), Munger (Canada), Reid (Great Britain), Schanda (Austria), Stokes (USA), Sakata (Japan), Stienstra (Netherlands), Ohno (USA), Vienot (France)
Terms of Reference	To produce a Technical Report summarizing recommended practice for the measurement of the colorimetric and spectroradiometric properties of visual displays.
Status 8/96	The TC was established at India meeting, as a result of the change of TC2-26's TR and its title. (The chairman distributed a plan for the contents of the report in November, and is requesting comments from the members.)
Status 9/97	The proposed contents of the report were circulated at the end of 1996. Comments from members are being sought. Chairman is maintaining strong links with other organizations working on VDU measurements. The chairman is preparing a talk on this TC at the coming CIE Symposium on Color Standards for Imaging Technology, Nov. 1997, Scottsdale.
Notes 1/98	The CIE Expert Symposium on Color Standards and Imaging Technology was held in Scottsdale, USA, Nov. 21-22. The chairman gave a presentation on TC2-26. The Secretary gave a presentation on CIE Div.2.
Status 5/98	An outline of the structure of the proposed report was discussed a the Expert Symposium on Color Standards for Imaging Technology in Scottsdale in Nov. 1997. The chairman is also taking care to coordinate the work of this TC with activities in the IEC.
Status- 6/99	Progress has been slow during the past few years, due to changes in the chairman's responsibilities. However, important liaisons with other groups including IEC are being maintained and it is anticipated that a draft document should be available for TC comment shortly.
Status- Apr.00	First draft distributed in January 2000, and the TC met on 7 April in Teddington with nearly 30 participants. The TC deals with emissive displays though it is not indicated in the title. The TC addresses issues in the measurement of x, y, Y - color and luminance of displays and does not deal with electronic side, characterization of displays other than color and luminance, nor appearance. Some more sections to be added for 2nd draft, which is to be circulated next spring. Then 3rd draft is planned for fall 2001 and the final document for spring 2002. A little restructuring of the document after the first outline was circulated and comments received. The current draft includes sections for display technologies, measurement technologies, measurement methods, and recommended practice. Emphasis will be made on measurement instrumentation and how to deal with errors and uncertainties. Membership list will change to include some D8 members.

 

TC2-43 Determination of measurement uncertainties in photometry.

Chair	G. Sauter (Germany)	AD: Goodman
Member	Bastie (France), Corrons (Spain), Goodman (Great Britain), Köhler (BIPM), Moore (Great Britain), Ohno (USA)
Terms of Reference	To prepare a CIE recommendation as basis for the determination of measurement uncertainties valid for quantities used in photometry.
Status 9/97	This TC was established in Sep. 1996. Due to the chairman's medical problem, no draft has been written yet. There was an internal meeting within PTB on this subject, and 20 page notes were produced. Chairman plans to distribute the notes in English by email. A guide-type document is aimed. The chairman cannot come to Boulder. Work will progress by correspondence. The first meeting may be in Warsaw.
April 21 1998	The first draft was circulated to the members. The first TC meeting is scheduled for May 18, 1998 in Boulder, USA.
Status 5/98	The report was given by the chairman. The TC met for the first time on May 18th in Boulder with about 35 participants. The first draft, distributed in April, was discussed. The word "selected" was added in the TR to make it more accurate. There were active discussions on the structure of the document. There were suggestions for the document to start with a part with more plain descriptions for photometry practitioners, followed by the rigorous mathematical procedures as given in the current draft. Based on the discussions, the next draft will be prepared for the second meeting in Warsaw. (The minutes of the TC meeting was distributed by e-mail on June 25, 1998)
Status- 6/99	The TC had its second meeting this time in Warsaw with 23 attendees. There was much discussion on the structure of the second draft. The document now consists of two major parts: the first part is the summary of all the equations used for determination of uncertainties, the second part consists of several examples, from simple ones to difficult ones. The second part should give more explanation to assist technicians as well as scientists to understand calculation and definitions of the uncertainties. Further written comments are requested in the next two months, and a next version is to be prepared for discussion at the next meeting in UK.
Status- Apr.00	The TC met in Teddington and discussed the third draft. The format and style of the document have been agreed. The document is divided into 3 parts: the first part is a summary of information from ISO Guide to the Expression of Uncertainty (GUM), the second part is a selection of examples, and the last part deals with uncertainty of quantities correlated. Part dealing with summary of background is accepted. Examples start with very simple questions, eg. the resolution of meter indicators, operation of incandescent standard lamps at nominal current, and how to handle correlated measurements. Still looking for examples of more practical use. More ideas of good examples are welcome.

TC2-44 Vocabulary Matters

Chair	J. Moore (Great Britain)	AD: Vandermeersch
Member	Billmeyer (USA), Burghout (Netherlands), Ionescu (Romania), Johnson (USA), Kohler (BIPM), Morren (Bergium), Nishi (Japan), Ohno (USA), Poppe (Hungary), Sauter (Germany), Schanda (Hungary), Woo (Canada)
Terms of Reference	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.
Status 9/97	Established at the Durban meeting. Approved - BA Report Jan.13,1998.
Status 5/98	Work has only just started in this TC. A letter is being sent to members asking them to give their views on changes that they would like to see made to existing definitions in the International Lighting Vocabulary and on new terms that should be introduced. The new ILV will certainly incorporate the new definitions agreed by Division 2 which appear in the CIE Collection on Photometry and Radiometry, Publication CIE 114-1994. These include precise new definitions for distribution temperature and ratio temperature as well as the terminology relating to non-selective detectors. It is still not clear what central policy TC 7-06 will recommend concerning the number and scope of the new definitions to be adopted, but, for the present, I am suggesting that perhaps Division 2 should follow the policy already adopted by Division 1, keeping changes to existing definitions to a minimum and limiting the introduction of new terms to those that are regarded as essential. The definitions of terminology contained in the various Division 2 Technical Reports, both those now published and those still in preparation, will be examined to determine which of the terms listed are appropriate for inclusion in the ILV.
Status- 6/99	ILV (International Lighting Vocabulary) is being revised and this TC is responsible for D2 terms. The chairman circulated possible new terms (about 300) to members. Comments have been collected and compiled for revision, and the second mailing is being prepared. Different opinions should reach consensus in the second mailing. As a guiding principle to assess the suitability of terms, the view taken within the TC that ILV is not a scientific dictionary, nor text book. Thus it has been agreed to eliminate technical principles and figures (which should be in technical reports) and decided that ILV should stick to strictly definitions. If other Divisions have different opinions, the policy must be harmonized.
Status- Apr.00	The work is being finished. CB is to publish new ILV (International Lighting Vocabulary) soon. The new ILV will be published in electronic form, and it is proposed that this ILV be updated continuously. The Chair circulated 200 definitions and got agreement on only 20 that will be added to D2 terminology. Many terms are still in debate and could not be included in the next version: e.g., spectral mismatch correction factor, and distinction of "luminous" and "radiant" from "photometric" and "radiometric". The new ILV is planned to be published this year.
Status- May 01	No report received.

TC2-45 Measurement of LEDs - Revision of CIE 127

Chair	Kathleen Muray (USA)	AD:
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), Guenther (Germany), 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) &endash; revised Aug. 99.
Terms of Reference	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.
Status 5/98	Established at the Boulder meeting. Approved by Board in 6/98.
5/99	Had a TC meeting in Gaithersburg, Maryland, USA, on May 3, 1999. First draft (partial) was presented and discussed.
Status- 6/99	This is a continuation of TC2-34 and deals with additional issues to be resolved. The TC was established last year in Boulder. Two TC meetings have been held, in Gaithersburg at CORM'99 in May, and in Warsaw this time, both chaired by the chairperson K. Murray. The meeting in Warsaw focused on defining the measurement quantities for partial flux, and the TC came to an agreement on this. Next draft will be circulated within next few months for further comments. There are issues still to be addressed, including assessment of V(l) match and spectral measurements of LEDs. Next meeting is planned for April 2000 in UK.
Status- Apr.00	The TC had the third meeting in Teddington. The second draft was presented. Major problems are still to be resolved: 1) decision on how an alternate method to replace f1' for LEDs. The same problem addressed by TC2-46. 2) How to measure luminous flux. First question is what quantities are needed. The TC is discussing the total flux (4p) and partial LED flux (2p, etc., with defined reference point). This question is highly dependent on users and applications. More discussions are planned via email. See Attachment 5 for the Summary of the Teddington TC meeting, submitted by the TCC.
Status- May 01	The TC met on May 14 at NIST, prior to this Division meeting, with over 40 attendees including many guests. The 3rd draft (sent out on May 4) was distributed and discussed. The discussion focused on total flux measurement geometry. The TC agreed to adopt "partial flux" with a given opening angle, in addition to the 4p total flux, and not to adopt hemispherical forward flux. There are still issues to be resolved on conditions of spectral power distribution measurement (bandwidth, intervals, geometry) and evaluation of the spectral mismatch of photometers (to replace f1'). Virtual meetings were suggested to continue discussions on such issues before next physical meeting.

TC2-46 CIE/ISO standards on LED intensity measurements

Chair	John Scarangello (USA)	AD:
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 (Austria), Schumacher (Germany), Sojourner (USA).
Terms of Reference	To prepare a CIE/ISO standard on the measurement of LED intensity measurements based on the CIE Pub. 127.
Status 5/98	Established at the Boulder meeting. Approved by Board in 6/98.
5/99	Had the first TC meeting in Gaithersburg, Maryland, USA, on May 3, 1999. First draft was presented and discussed.
Status- 6/99	The TC met in Warsaw with the second draft reviewed, and had good discussions and inputs on several key questions. The scope of the document is clarified, and the TC agreed to use other CIE publications as much as possible on detector issues and to include more information on uncertainty calculations. The TC also reached general consensus that f1' is not good for LEDs, but this issue should be addressed outside this committee, perhaps at some other TC, as it is expected that it will take substantial new work and time. The chairman will prepare the next draft before the next D2 meeting. The first draft was put on the hidden website as a trial, which worked well. Further versions will follow the same way.
Status- Apr.00	The TC had its third meeting on April 7 in Teddington (chaired by Jones). The third draft was discussed. Some serious issues have been resolved related to calibration of photometers and radiometers for LED intensity measurements. The TC plans virtual meetings to handle some of the remaining issues.

TC2-47 Characterization and Calibration Methods of UV Radiometers

Chair	Gan Xu (Singapore)	AD:
Member	Hengstberger (South Africa), Wilkinson (Australia), Lambe (UK), Rattunde (Germany), Saunders (USA), Pietrzykowski (Poland), Corrons (Spain), Larason (USA), Thompson (USA), Kohmoto (Japan), McArthur (Canada), Kravetz (USA)
Terms of Reference	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.
Status 5/98	Established at the Boulder meeting. Approved by Board in 6/98.
Status- 6/99	The TC started last year with the formal invitation sent out to members in November. The TC had 12 members before Warsaw conference. A target of completing the document in 2002 was set. The chairman circulated a draft table of contents in January 1999. The TC met for the first time in Warsaw with 30 attendees, discussed the revised version of the table of contents, and had active feedback from members and guests. More members are expected to join after Warsaw. The TC made decisions on some key issues. The UVNET (a three-year project under EUROMET and the EU) is developing standard documents in the same area, including one on characterization of UV radiometers (first draft produced by WG1 in October 98). The document copy was circulated among TC members with the permission of the UVNET WG1 chairman. The document has taken the identical terminology and technical approach to CIE Pub. 69. There was an initial concern on overlap and duplication of work. The TC invited two representatives from UVNET WG1 to attend the TC meeting in Warsaw, and also had a representative from the World Meteorological Organization (WMO), which also has a WG on UV radiometry for solar UV measurements. The TC has established contacts with these groups and is having friendly discussions. UVNET expressed their wish to collaborate with CIE. Thus, keeping close contact with them, the TC will continue on to develop the technical report. The chairman is still not sure if the liaison with UVNET should be kept in TC level or Division level and requested advice. (Summary of CIE TC2-47 First Meeting (Warsaw, 29 June 1999) was later submited.
Status- Apr.00	Not much progress has been made since Warsaw meeting. The TCC has been in contact with some members of the committee and UVnet WG1 leader to exchange opinions on the content of the new document, and have started to write the introduction and calibration parts. However, opinions are still divided and decisions remain to be made on the following points; whether CIE should adopt the major part of the UVNet WG1 document on UV measurements; whether or not it is meaningful to follow the same approach as in photometry for the characterization of UV meters, taking into consideration that the spectral mismatch in UV measurement is much worse and more complicated than the photometric measurement. The TCC will summarize the situation shortly and write to the members for consensus. The TCC also hopes that the TC has chances to meet either later this year or the first half of next year and have planned to get the first draft ready for discussion by then.
Status- May 01	The TC met at NIST on May 17 for 4 hours. The meeting was attended by 30 participants (9 members, 3 new members, and 18 guests). The 1st draft (distributed on March 1, 2001) was discussed. The TC agreed on the overall structure of the document. A number of decisions were made to further improve the draft. Future work needed was also discussed. The 2nd draft was targeted for Oct. 2001. Next TC meeting schedule depends on the next D2 meeting schedule. The TCC will send an e-mail to all members to confirm their continued interest in the TC work and ask for more active contribution to the preparation of the document.

TC2-48 Spectral responsivity measurement of detectors, radiometers, and photometers.

Chair	George Eppeldauer (USA)	AD:
Member	Austin (USA), Boivin (Canada), Bouman (USA), Corrons (Spain), Coutin (France), Dezsi (Hungary), Gardner (Australia), Goodman (UK), Köhler (BIPM), Larason (USA), Larsen (Denmark), McArthur (Canada), Ohkubo (Japan), Palmer (USA), Pietrzykowski (Poland), Rattunde (Germany), Sauter (Germany), Webb (USA), Xu (Singapore),&endash; revised Aug. 99.
Terms of Reference	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.
Status 5/98	Established at the Boulder meeting. Approved by Board in 6/98.
Status- 6/99	After the Boulder meeting, the chairman wrote an Outline / first rough draft, mailed to 16 members of the TC, and had first meeting here in Warsaw with about 25 attendees. The scope of the paper was discussed, and it was agreed to include radiance responsivity, in addition to radiant power responsivity and irradiance responsivity that were originally proposed. The TC agreed on the table of contents and the modified structure of the report. The TC plan to meet for the second time in London. The chairman plans to finish the report in 3 to 4 years.
Status- Apr.00	The TC met on April 8 in Teddington. In the new report, we are including modern detectors and also discusses not only spectral power response (beam geometry) but also spectral irradiance response (overfilled geometry) and radiance response measurements. New report describes measurement geometries, methods, setups, and uncertainties. The outline of the first draft was discussed in Warsaw and the scope and table of contents agreed. Since then the second draft (40 % done) was produced and discussed this time. Many suggestions have been made, and the TCC will work on the slight change of the structure and write the rest of the document. The TCC plans to finish the work in three years.
Status- May 01	The TC met for the third time on May 17 at NIST prior to this Division meeting, with about 40 attendees including many guests. The second draft was distributed and discussed. The TC agreed to change the scope by extending the wavelength range from 200 nm to 2.5 mm. The TC also agreed that the report will remain comprehensive to include measurements of 1) spectral power responsivity, 2) spectral irradiance responsivity, and 3) spectral radiance responsivity, and describe measurement geometry, setup, measurement methods, and uncertainties for each mode of measurement. Properties of detectors will also be described to give guidance in the selection of standard detectors. Matrix type detectors (focal plane arrays, etc.) will also be included. Still a lot of work to be done, and the TCC expects to finish the document in next three years.

TC2-49 Photometry of Flashing Light

Chair	Yoshi Ohno (USA)	AD:
Member	Arens (USA), Austin (USA), Berkhout (USA), Couzin (USA), Ellis (USA), Eppeldauer (USA), Goodman (UK), Hengstberger (South Africa), Köhler (BIPM), Kondo (Japan), Rattunde (Germany), Schmidt-Clausen (Germany), Sauter (Germany), Webb (USA) &endash;revised July 1999.
Terms of Reference	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.
Status 5/98	Established at the Boulder meeting. Approved by Board in 6/98.
Status- 6/99	The TC had its first meeting in Warsaw with about 25 attendees, including 8 initial members. As discussed at the Workshop in the previous week, various new issues have been recently raised in the measurement of flashing lights, especially for signaling applications in roadway, sea, and air traffic. The TC will produce the first CIE document on photometry of flashing lights, but addressing only the physical measurement aspects. The issues on human vision aspects will not be covered in this TC, but should be produced in a document from Division 1. The chairman prepared the scope and the table of contents of the document, which were discussed at the meeting. After active discussions, with several points clarified and some new suggestions made, the TC agreed on the scope and basic structure of the document. The TC added 3 new members after the meeting. The TC came to a consensus that a new document from Division 1 is urgently needed, and requests Division 1 consider this. The chairman plans to develop the first draft by next physical meeting in London, and hopes to finish the document in 3 years.
Status- Apr.00	The TC had its second meeting in Teddington, April 7, 2000 and discussed the new draft (Partial draft 0.2). The definition of effective intensity was mainly discussed. The current draft employs the definition of Schmidt-Clausen's Form- Factor method. A problem on the Form-factor method was raised and a proposal (to use convolution) was made by D. Couzin et al, claiming that the Form-factor method would give erroneous values when a narrow pulse is superimposed on a slow pulse. The TC did not agree to adopt the proposed method that has no publication and not enough supporting data. Such investigations would belong to D1. To address such a problem, the TCC suggested to incorporate low-pass filtering (with a time constant short enough not to alter the slow pulse). As there was no time to discuss other parts of the document, the TCC plans to hold a virtual meeting to follow up the discussion. (Progress report April 2, 2000 distributed at Teddington meeting.)
Status- May 01	The TC met at NIST on May 17 prior to this Division meeting, with about 30 attendees including 10 TC members. Draft 1 (distributed to members on May 6) was discussed. This draft was totally rewritten from the previous version (partial draft 0.2), with two additional sections filled. Much time was spent for discussions on the definitions of quantity terms for flashing light. The TC agreed on some changes on the terms and combining two sections. D. Couzin raised the concern again on the Form Factor method, which may produce erroneous results for a narrow pulse superimposed on a slower pulse. The TCC emphasized that, in spite of such possible problems, there are no better methods that are well recognized and widely accepted now, than the Form Factor Method. However, the TC is open for further studies on such problems, and the TCC suggests such analyses to be made on real waveforms of flashing lights actually used in various applications rather than on hypothetical data. The members are requested to collect such data and send to the TCC.

Chair	Richard Austin (USA)	AD:
Member	T. Goodman (UK), G. Hopkinson (UK), S. Prince (UK), R. Bergman (USA)
Terms of Reference	To produce a technical report which sets out guidelines for the recommended procedures, methods and transfer standards for the calibration of diode array spectrometers.
Status- 6/99	Established at Warsaw meeting.

TC2-52 Photometry of Emergency Lighting Luminaires

Chair	Guy Vandermeersch	AD: Vandermeersch
Member
TR	To produce an addendum to CIE publication 121 containing specific requirements for the photometry of emergency lighting luminaires, in particular to provide additional correction factors on the relative output of the luminaires at specified times of operation.
Apr.00	Established at 2000 Teddington meeting.
Status- May 01	The TC work relies on the work done in other Divisions and other international organizations (IEC and CEN where major work has been done or is in last stages). These organizations deal with what to measure, while this TC will define how to measure emergency luminaires. Within CIE D5, TC5-19 met twice, in October 2000 and April 2001. Their work is still in a very early stage but one clear statement "5.19 will not contradict the work done in IEC34 and CEN169 TC3" permits us to start relaying on the specific photometric requirements we have in IEC standard 592-2-22. These requirements were implemented by IEC as IEC34 considers the photometric performances as part of the safety requirements for this type of luminaire. In parallel we have in CEN169 a work started on presentation of photometric data. Even if this work is going on in Europe only, IEC has the intention to endorse it. As a consequence the non-European members of IEC34 now receive all information of the work done in European circles. Therefore our TC will also include CEN drafts in our work. All experts in the photometry of emergency luminaires willing participate may contact the chairman. A one and half day meeting is planned in Europe (Berlin or Brussels) for 9th and 10th of October following the TC2-23 meeting on 8th and 9th.