May 31, 2006
Rev. June 30, 2006
Minutes
of 2005 CIE Division 2 Meeting
9:00 – 17:00, 17
May 2005
León, Spain
Abbreviations:
AD: Associate
Director
CIE CB: CIE Central Bureau
CIE BA: CIE
Board of Administration
CM: Country
Member
DD: Division
Director
ILV: International Lighting
Vocabulary
ML: Member
List
NC: National Committee
TC: Technical Committee
TCC: Technical Committee Chair
TR: Terms of Reference
D2: Division
2 (D1, D4, D8, likewise)
ST: Status
WG: Working Group
Attendees:
Carl
Andersen FHWA,
USA
Petz
Anikin ACOL
Technology, Russia
Jean
Bastie BNM-INM/CNAM,
France (CIE Vice President)
Rolf
Bergman Consultant,
USA (President, CIE-USA)
Peter
Blattner METAS,
Switzerland
Gorow
Baba MCRL,
Japan
Ellen
Carter Color
Research and Appl., USA
Antonio Corrons IFA,
CSIC, Spain
Iakyra
Couceiro INMETRO,
Brazil
Richard
Distl Instrument
Systems, Germany
George
Eppeldauer NIST,
USA
Teresa Goodman NPL,
UK (D2 DD)
David
Gibbs NPL,
UK
Teng-Hai
Lau Lumileds
Lighting, Malaysia
Jack
Hsia USA
Chang
He Hong Chonbuk
National Univ. Korea
Franz
Hengstberger* CSIR-NML,
South Africa (CIE Vice President)
Toni
Gugg-Helminger Gigahertz-Optik,
Germany
Günther
Heidel Osram
OptoSemiconductor, Germany
Werner
Horak Siemens,
Germany
Erkki
Ikonen MIKES,
Finland
Nobert
Johnson 3M
Co., USA (D2 AD)
Jens
J. Jensen DELTA,
Denmark
Kohtaro
Kohmoto Teknologue
Co., Japan (TC2-50 chair)
Udo
Krüger Techno
Team, Germany
Janos
Makai CIECB,
Austria
Larry
Leetzow Magnaray,
USA
Hans
Allan Löfberg* Univ.
Gävle, Sweden (CIE Past President)
Cameron
Miller NIST,
USA
Kathleen
Muray INPHORA,
USA
Gerald
Mathe Instrument
Systems, Germany
Yoshi
Ohno NIST,
USA (D2 Secretary)
Seung
Nam Park KRISS,
Korea
Etienne
Pierson Laborelec,
Belgium
M
Luisa Rastello IEN,
Italy
Gerhard
Rösler GretagMacbeth,
Germany
Ichiro
Saito NMIJ/AIST,
Japan
Georg Sauter PTB,
Germany (D2 AD)
John
Scarangello Lumileds
Lighting, USA
Gennady
Shamparunyany Russia
Janos
Schanda* Univ.
Veszprem, Hungary (CIE Secretary)
Jens
Schuette SLI
Miniature Lighting, Germany
Hiroshi
Shitomi NMIJ/AIST,
Japan
Armin
Sperling PTB,
Germany
Walter
Steudtner OSRAM
GmbH, Germany
Raissa
Stolyarevskaya Acol
Technologia, SA, Russia
Ian
Tutt Trinity
House, UK
Guy
Vandermeersch Belgium
Richard
Young Optronic
Labs, USA
Joanne
Zwinkels NRC,
Canada
Total 51 persons from 20 countries, including 13 country members. Underlines indicate country
members. * proxy for country
member.
Handouts
Agenda of 2005
Division 2 meeting (Attachment 1)
List of the
country members, TCs, Reporterships, and Liaisons.
Opening
Division
Director, Teresa Goodman, opened the meeting at 9:00 a.m. and welcomed everyone
present.
1. Attendance
List, Apologies
Secretary
received regrets from the following persons:
George Andor (Hungary)
Pierre
Botha (South
Africa)
Jeanne-Marie Coutin (France)
Arnold Gaertner (Canada)
Gyula Dezsi (Hungary)
Stanko Erste (Slovenia)
Jim Gardner (Australia), D2 Editor
Neil Hodson (USA), TC2-32 chair
Alan Kravetz (USA), D8 liaison
Balazs Kranicz (Hungary)
Tore Kolas (Norway) … Arve Augdal represents
Tom Larason (USA), TC2-29 chair
Allan Ottosson (Sweden) …. H. A. Lofberg represents
Jiangen Pan (China)
Reiner Rattunde (Germany)
Danny Rich (USA), TC2-39 chair
Alan Robertson (Canada), TC2-57 chair
Christine Wall (UK), TC2-42 chair
Gan Xu (Singapore)
Gene Zerlaut (USA), TC2-17 chair
2. Introductions
All
participants introduced themselves.
3. Approval
of Agenda
The agenda for
this meeting was previously distributed via the website (Attachment 1).
The agenda was approved with no changes.
4. Approval
of the 2004 D2 meeting minutes
The minutes of
the 2004 D2 meeting in Tokyo, Japan, which were distributed via e-mail circular
and on the website in October 2004, were approved with no changes.
5. Director’s
Report (T. Goodman)
First, DD
reported the sad news that Mike Marsden (UK), a past president of CIE and
CIBSE, passed away very recently. The attendees observed a moment of silence
for him. DD then reported several items of news from the Board of
Administration meeting as below.
a) CIE Publications Webshop
The webshop for
CIE publications is nearly ready and will be in operation next month (June
2005). Members of CIE national committee are eligible for a 50 % discount on
CIE publications, and this will be highlighted on the website; it is hoped this
will attract more people to become CIE NC members. There will be links to
national committees on the website.
The webshop has been set up at no direct cost to the CIE, but a small
percentage of each transaction will be paid to the company who developed the
site to cover the development cost. The company also sells publications for
other standards bodies, such as ISO and IEC, and CIE receives a payment for
each of these publications sold through the CIE webshop portal – CIE
members are therefore encouraged to use this route for purchase of all their
standards documents.
b) List of
CIE Recommended Journals
A list of CIE ‘recommended journals’ is
being developed. This is to try to overcome the problem that because many of
the key lighting journals, such as Lighting Research and Technology (LR&T),
are not listed on the Science Citation Index, researchers in some academic
institutions find it unrewarding to publish papers in these journals and
instead publish in less relevant journals. As a result, developments in light
and lighting are not being disseminated in the most effective manner.
In order to be included on the CIE recommended list, journals will be required to demonstrate that they meet a rigorous set of criteria, such that their standard can be regarded as being at least as high as those journals on the SCI. This will help researchers to justify publication of their papers in these journals. The request to be included in the CIE list should come from the journal itself, after which the necessary information to demonstrate compliance with the assessment criteria will be reviewed by the Publications Board, who will then make a recommendation to the CIE BoA regarding whether the journal should be accepted. The list, and the assessment criteria, will be made available on the CIE website and reported in CIE News on a regular basis. A request for inclusion on the list has already been received from LR&T, and two other journals are also interested. DD requested that, if the participants know of any journals that they think should be on the list, they should contact the editorial board of the journal asking them to approach CIE.
c) ILV
The new version of ILV is nearly completed, and is now in the process of harmonization of terms between different Divisions. The ILV will be published in two volumes, a ‘Fundamental’ and an ‘Applications’ volume. It will be published in electronic form, with all terms in alphabetical order. The deadline for harmonization is September, when there will be a final vote. The ILV will be published as a CIE version first, but it is expected that it will ultimately be published as a Joint CIE/IEC standard. The details of the process for joint publication is yet to be discussed with IEC. Blattner added that the list of terms of contained in the current ILV is available in four languages on the IEC website (www.iec.ch) (but not the definitions of the terms). Kohmoto mentioned that in the IEC version it is expected that there will be translation of the terms in five languages including Japanese and Chinese, and Japan plans to develop an official Japanese version. Goodman clarified that the current plan of CIE is to publish the CIE version only in English. Translation of terms into other languages will be discussed with the IEC. Discussions with IEC will start immediately after this Midterm Session.
d) Relationship with other organizations
There will be a new Vice President, Standards, from 2007, whose responsibility is to ensure that CIE’s position and expertise are property recognized in all other standardizing bodies. There will be discussions very quickly (even before he officially takes up this role) to address some specific issues that have already arisen (such as boundaries between UV and visible, which one of the ISO committees has proposed to change).
e) Future structure of CIE
There have been discussions in the Board regarding whether CIE is organized in best way, particularly the Division structure. There are potential overlaps between Divisions and some issues do not fit in any of the Divisions. Therefore the Board plans to spend one whole day next year discussing recommendations for potential changes for the future. DD asked for any ideas from participants so she can feed back comments at the discussion. One idea may be to divide CIE activities by horizontal technologies, rather than to split by applications (measurement, vision, exterior lighting etc.)
Vandermeersch commented that IEC has horizontal committees and vertical committees, and we need to mix both. Director’s personal view is that it does not matter as long as communication is good.
Andersen raised a concern that this Midterm session did not provide sufficient time to allow communication between Divisions (independent from the wonderful job done by the Spanish NC in organizing the meeting). There should be more time (days) to allow cross-Division participation and discussion. Secretary added that it was not possible to schedule all TC meetings in one day. DD will raise this at the next Board meeting.
f) Future meetings
Dates for the next Quadrennial Session, in Beijing, China, have now been set: 4th to 11th of July 2007. The deadline for abstracts will be 15 September 2006.
Several symposia are planned for next year that Div.2 members may find of interest:
· Jan 2006: Centennial of IESNA, NY
· Feb. 2006: Lighting Research Organization (USA), Symposium on communicating color information to consumers, in Florida
· May 2006: CIE Symposium at NRC, Canada to celebrate 75th Anniversary of CIE Colorimetric Observer functions
· June 2006: CIE Symposium on Uncertainty, Braunschweig, Germany (organized by D2)
· Sep. 2006: 2nd CIE Symposium on Light and Health, at NRC
· Sep. 2006: CIE Symposium on the Measurement of Appearance, in Paris
· Sep. 2006: Hellenic Institute workshop on night landscape (night light pollution) in Greece.
g) CIE Colorimetry Book
CIE is celebrating the 75th anniversary of the 1931 System of Colorimetry and will publish a book “CIE Colorimetry 1931 – 2006” to commemorate this. Schanda explained that the book will include chapters on history, fundamentals of colorimetry in CIE 15:2004, spectral color measurement, tristimulus colorimetry, uncertainty in color measurement, physiologically-based colorimetry, color difference metrics, color appearance models, image analysis, color management, and future prospects. Schanda asked for any further ideas. The book will have to be prepared during the next few months to be in time for the Symposium in May 2006.
6. Secretary’s Report (Y. Ohno)
Country Members: D2 now has 36 country members. The country representative of South Africa has changed (to Pierre Botha) since the last D2 meeting.
Reports
Issued: The Summary of
the 2004 D2 meeting (Tokyo, Japan) was distributed via e-mail circular in Sep.
2004. The Minutes of the D2 Tokyo
meeting were distributed in October 2004.
The Activity Report – May 2005 was produced and distributed in May
2005. These documents are also
posted on the D2 website.
Division
2 Mailing List:
The List now has ~190
persons (last year – 187).
The e-mail addresses are maintained on the email reflector. The list is
always kept updated as far as possible. Currently 183 persons have valid e-mail
addresses on the list. All communications in D2 are done by e-mail (reflector)
and through the website, except for a few country members who have no e-mail
access. The Secretary requested that everyone should inform him any changes of
e-mail address as they occur, to ensure that they continue to receive
circulars. The Secretary reminded
the meeting that e-mail addresses are not shown on the D2 website (for security
purposes), and they are available at a link provided at the end of D2 home
page, username cie2 (the password is the name of the city where CIE CB is
located).
D2
Website: It has been updated constantly. There have been no major changes in
structure. There are currently 17 TC drafts posted on
the website (password protected).
The TC status is updated every year on the TC page. The global password
is distributed only to CMs and TC chairs, and password for each individual TC
is provided for use in the TC.
Those who have lost the password can contact Secretary or TCC to receive
it.
E-mail reflectors: cie-d2@nist.gov
continues to serve for D2 circulars and other communications. The Secretary
reminded the meeting that any messages other than from the subscribers are all
blocked, to avoid spams. An archive of all the past messages is available at a
link provided at the end of D2 home page (the same password as subscriber
list). The TC e-mail reflectors are provided to allow discussions on TC drafts
etc., between physical meetings. Currently, reflectors are set up for TC2-29,
2-45, 2-46, 2-48, and 2-50. Subscriber lists and message archives are available
in the same way as with cie-d2 reflector. TC email reflectors are created on a
by request basis. TC chairs who
need a reflector should contact Secretary.
DD Goodman encouraged everyone to use the
website and TC email reflectors for discussion between physical meetings, and
asked all TC chairs to make sure they have the latest TC draft posted on the
website. DD also emphasized that, in spite of the high level security system of
e-mail server, spams do come through, often disguised as being from one of our
members (for example, the ones that came recently under her name had not been
sent by her). She urged everyone to be cautious.
Finally, DD Goodman expressed her thanks for the
continuing hard work done by
Secretary. This was strongly endorsed by all present.
7. Editor’s
Report
The
Secretary received a report from the Editor, Jim Gardner. The following two
draft standards have undergone final editing (with input from DD, Secretary and Mielenz), in response to
comments from the NC ballots:
· CIE DS 010 Photometry - The CIE System of Physical Photometry (work of TC 2-35, “CIE Standard for V(l) and V'(l)”) (This standard was published as ISO 23539:2005(E)/CIE S010/E:2004 Photometry –The CIE System of Physical Photometry, in September 2005.)
· CIE DS 014-2.2 Colorimetry - Part 2: CIE Standard Illuminants (work of CIE TC 2-33, "Reformulation of CIE Standard Illuminants A and D65”). The revised version is out for NC comment.
The Editor
also assisted TC2-39 by providing comments on draft Technical Report of the TC,
on request from the Chair, Danny Rich. He also reviewed documents from TC2-37
and TC2-45.
The Editor
also worked on finalizing the D2 part of the ILV, in response to comments at
Tokyo meeting. The details are
reported in TC2-44 report.
It was
mentioned that Editor is working fast and efficiently and his work is much
appreciated.
8. Progress Reports from Technical
Committees, Reporters, and Liaison Persons
8.1.
Associate Director Johnson and TC chairpersons
Reports on TCs 2- 17, 19, 25, 28, 32, 39,
42, 44, 51, 53, 56, 57 were given.
8.2.
Associate Director Sauter and TC chairpersons
Reports on TCs 2-16, 29, 37, 40, 43,
45, 46, 47, 48, 58, 59, 60 were given.
8.3.
Associate Director Vandermeersch and TC chairpersons
Reports on TCs
2-23, 49, 50, 52 were given.
The
reports given for 8.1, 8.2 and 8.3 are summarized below in the numerical order
of all the TCs.
TC2-16
Characterization of the performance of tristimulus colorimeters
Chair:
J. Schanda (Hungary) AD:
Sauter
ML: Bittar
(New Zealand), Denner (South Africa), Goodman (UK), Gundlach (Germany),
Hengstberger (South Africa), Moore (UK), Muray (USA), Ohno (USA), Oleari
(Italy), Pointer (UK), Rastello (Italy), Rattunde (Germany), Sakai (Japan),
Sauter (Germany), Sugiyama (Japan), Terstiege (Germany)†
– revised Nov. 2005.
TR: To produce a report recommending
methods for assessing the performance of tristimulus colorimeter heads for
measuring chromaticity coordinates.
ST: AD Sauter
reported for the TCC. The TCC changed last year from Rastello to Schanda. The
11th draft was discussed chapter by chapter at the meeting on 16 May
2005 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.
TC2-17 Recommendation for integrated irradiance and spectral
distribution of simulated solar radiation
Chair:
G. Zerlaut (USA) AD:
Johnson
ML: Chomiczewski
(USA), Cordo (USA), DePietro (USA), Ellersick (USA), Christiaens (France),
Grossman (USA), Gueymard (USA), Ketola (USA), Martin (USA), Myers (USA), Riedl
(Germany), Robbins III (USA), Schoenlein (Germany), Scott (USA), Severon
(Germany) – revised March 2006.
TR: Revise and update CIE Publication
No.20 (1972)
ST: Bergman
reported for the TCC. A key objective of the TC is to use the SMARTS2 solar
radiation model (developed by Gueymard) to establish new tables of spectral energy distributions
which can be used as references for the simulation of solar radiation
for specific applications. A
rationale for updating CIE 85 has been prepared, based on a comparison of
SMARTS2 and CIE 85. There was a meeting
of US interests on January 25, 2005 in Ft. Lauderdale, FL. The TCC proposes a meeting in Europe in
the third quarter of 2005.
Discussion: Schanda commented that this TC should be aware of the
activity of TC1-66 (indoor daylight spectral distribution for colorimetry),
which is focused on the effects of window materials and requests from an ISO
committee, and should make sure the results of the two TCs are not in conflict.
DD Goodman suggested that the TC should also liaise with work in Div. 3 related
to indoor daylight solar distribution. Hengstberger commented that the
international daylight measurement program is also running in Div. 3. He also
suggested that revising CIE 85 might have implications for other existing CIE
publications (on solar simulators, spectral distributions of skies, etc.),
which should be considered. Distl mentioned that pulsed solar simulator sources
are now used for testing solar cells, so these should also be considered.
Sperling commented that some work at PTB on spectral responsivity of solar
cells using a pulsed solar simulator has been published.
TC2-19 Measurement of the Spectral Coefficient of Retroreflection
Chair:
N. Johnson (USA) AD: Johnson
ML: Arens (USA), Brekke
(Norway), Fisher (USA), Hsia (USA), Hubert (France), Kurioka (Japan), Price
(UK), Rendu (France), Rennilson (USA), Richey (Germany), Schreiber (Germany),
Sugiyama (Japan), Terstiege (Germany), Vandermeersch (Belgium)
TR: Identify the critical
measurement parameters, tolerances, and requirements for, and conduct an
international intercomparison of, the spectral coefficient of retroreflection.
ST: TCC Johnson
reported. The TC report on the intercomparison of spectral coefficient of
retroreflection is almost finished.
The last annex on radiometers is to be added and it will then be ready
to send to the Editor, prior to TC ballot.
TC2-23
Photometry
of Street-Lighting Luminaires
Chair: G.
Vandermeersch (Belgium) AD:
Vandermeersch
TR: Prepare a technical report on the photometry of
street lighting luminaires.
ML: Arens (USA), Blaser (Switzlerland),
Blochouse (Belgium), Claassens (NL), Corrons (Spain), Price (UK), Rattunde
(Germany), Rossi (Italy), Simons (UK), Sorensen (Denmark)
ST: TCC
Vandermeersh reported. The TC
met on 16 May 2005 to discuss the work plan for preparation of technical report
on specific requirements for goniophotometry of street light luminaries, which
will be published as an addendum to CIE 121. In preparation for the meeting,
the TCC and the TC secretary Blochhouse reviewed CIE 121 to determine which
sections need to be amended, and prepared a draft 2-page addendum document.
This addresses issues relating to description of the mounting position (tilt)
of the luminaire and the presentation of measurement data according to the format
recommended in CIE 140.
The TC also discussed the need for guidance relating to the correct
measurement of TL5 lamps, due to issues relating to temperature, and with
regard to whether or not a ballast lumen factor correction should be applied
for LOR measurements. Work on these points is currently being handled by an
informal group of three manufacturers and two laboratories in Europe, in which
the TCC is participating. It appears that CIE 121 may need to be revised to
give specific guidance on these issues. Hengstberger suggested that, if the TC
is intending to extend its work to include a revision of CIE 121, the TR should
to be changed.
TC2-25 Calibration
Methods and Photoluminescent Standard for Total Radiance Factor Measurement
Chair: J. Zwinkels (Canada) AD: Johnson
ML: Bristow
(Sweden), Erb (Germany), Leland (USA), McCamy (USA), Nayatani (Japan), Puebla
(Germany), Racz (Hungary), Simon (USA), Witt (Germany), Clarke (UK) - revised
Aug. 2002
TR: Prepare a CIE
report on methods for measurement of total radiance factor of photoluminescent
materials. Recommendations for realizing and calibrating photoluminescent
standards by the one and two-monochromator methods will be included.
ST: TCC
Zwinkels reported. The document was sent for TC ballot just before the San
Diego meeting (2004) and was unanimously approved, with some editorial
comments. These comments have now been incorporated into a revised draft. In
addition, with the assistance of the Editor and Secretary, some further
editorial changes have been made in order to harmonize the new terms for
fluorescence defined in the document with those defined in TC1-53 (spectral
quality of daylight simulators; published last year). The new terms on
fluorescence defined in the document have also been sent to the Editor for
review for submission to the ILV.
Since
all the changes made to the draft voted on by the TC are editorial in nature,
it was agreed by all present that the revised document should now proceed
directly to Division ballot.
TC2-28 Methods of characterizing
spectrophotometers
Chair:
Mike Pointer (UK) AD:
Johnson
ML: Andor (Hungary),
Bastie (France), Berns (USA), Distl (Germany), Eckerle (USA), Konstantinova
(Bulgaria), McCamy (USA), Robertson (Canada), Sugiyama (Japan), Ulyanov (Russia),
Zwinkels (Canada)
TR: Write a CIE report on the
characterization of spectrophotometers by means of reference materials and
other methods, with particular reference to linearity, wavelength error, stray
light, and integrating sphere errors.
ST: DD
Goodman reported for the TCC. The former TCC, Peter Clarke left NPL last year
and Pointer took over the chairmanship.
Draft 5 has been completed and sent to the TC. Some comments were
received and most of these have now been incorporated into a revised draft.
There are only one or two issues in the uncertainty section and some
terminology updates still to be completed. It is expected that the report
should be sent for final TC ballot within the next year.
TC2-29 Measurement
of Detector Linearity
Chair:
T. Larason (USA) AD:
Sauter
ML: Bastie (France), Clare
(New Zealand), Distl (Germany), Eppeldauer (USA), Goodman (UK), Webb (USA),
Palmer (US), Sauter (Germany), Andor (Hungary), Bittar (New Zealand), Budde
(Canada), Dezsi (Hungary), Mihailov (Russia), Moestl (Germany) - July 2003 (being updated)
TR: Prepare a CIE guide on methods for the
characterization of the linearity of detectors of optical radiation, including
different principles by which the linearity of detectors can be determined and
causes of non-linear behavior, to aid users of optical radiation detectors in
the selection and use suitable devices for specific applications.
ST:
Ohno reported for the TCC. Work has
been delayed and no progress has been possible on the next draft due to the
TCC's schedule. However it is planned to make the changes agreed upon at the
San Diego meeting, and to receive further comments from the committee members,
by October 2005 (via the email reflector). A meeting may be held at a suitable
time and location (e.g. CIE D2 Meeting at PTB in June 2006).
TC2-32
Measuring Retroreflectance of Wet Horizontal Road Markings
Chair: N. Hodson (USA) AD: Johnson
ML: Austin
(USA), Davies (USA), Dibbern (Germany), Hubert (France), Johnson (USA),
Lundkvistl (Sweden), Meydan (Australia), Meseberg (Germany), Rennilson (USA),
Schmidt-Clausen (Germany), Schnell (USA), Schreuder (Netherlands), Soardo
(Italy), Sorenson (Denmark) - revised August 1999
TR: To prepare a
guide for the methods of measuring coefficient of retroreflected luminance
(specific luminance) of horizontal road markings under wet weather conditions.
ST: AD
Johnson reported for the TCC. The TC draft is close to completion. One section
of technical document remains to be finalized and some additional figures added.
Once this section is finished the document will be sent to the Editor and for
TC ballot. It was noted that good
liaison is being maintained with D4, due to their interest in this topic.
TC2-37
Photometry Using Detectors as Transfer Standards
Chair: Y. Ohno (USA) AD: Sauter
ML: Andor
(Hungary), Austin (USA), Bastie (France), Bittar (New Zealand), Czibula
(Germany), Corrons (Spain), Dézsi (Hungary), Eppeldauer (USA), Gardner
(Australia), Goodman (UK), Kohler (BIPM), Moore (Great Britain), Muray (USA),
Pietrzykowski (Poland), Rattunde (Germany), Rastello (Italy), Sauter (Germany),
Schanda (Hungary), Wychorski (USA)
TR: To prepare a report
on the properties of V(l)-corrected
detectors that are suitable for disseminating and maintaining photometric
units. This report will include
methods for the use of these detectors.
ST: TCC Ohno reported. A TC ballot on the draft 7 was held in June 2004 and several comments (mostly editorial) were received. There were no negative votes. The TCC is working on a revised draft incorporating these changes and will send this to TC members as soon as it is ready, in preparation for the final version for Division ballot.
TC2-39 Geometric
Tolerances for Colorimetry
Chair: D. Rich (USA) AD: Johnson
ML: 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). - revised
June 1999.
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.
ST: AD Johnson reported for the TCC. The document was approved as a result of the TC ballot, and has now been sent to the Editor. The Secretary reported that he had received the document from TCC, but it still needed minor editorial work. Once these editorial changes are completed, the document will be sent for Division ballot.
DD Goodman mentioned
that TC2-53 would be very interested in this document and suggested they look
at it before the Division ballot. Schanda suggested that since TC1-57
(Robertson) is developing standards on colorimetry, they should also be sent a
copy.
TC2-40
Characterizing the Performance of Illuminance and Luminance Meters
Chair: R. Rattunde (Germany) AD:
Sauter
ML: 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) – revised July 1999
TR: 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.
ST: No report
received. There has been no progress of the TC since Warsaw (1999). DD
Goodman suggested that she should contact the TCC and request a new draft
within three months. If there is no response, a new TCC should be identified.
Sperling showed interest in taking over the chairmanship if necessary.
TC2-42
Colorimetric Measurements for Visual Displays
Chair:
C. Wall (UK) AD:
Johnson
ML: Andor (Hungary), Ansell (USA), Baribeau
(Canada), Berns (USA), Boyton (USA), Dalton (UK), Hanson (UK), Hardis (USA),
Ikeda (Japan), Lara (USA), Laur (Germany), Leone (USA), Lindfors (Finland),
Luo (UK), MacDonald (UK), Maelfeyt (Belgium), McFadden
(Canada), Ohno (USA), Rastello (Italy), Reid (UK), Sakai (Japan), Schanda
(Hungary), Stienstra (Netherlands), Stokes (USA), Vienot (France) –
revised June 2001
TR: To produce a
Technical Report summarizing recommended practice for the measurement of the
colorimetric and spectroradiometric properties of visual displays.
ST: DD Goodman
reported for TCC. A TC meeting was held 3 years ago and the document was fairly
close to completion. However, the TCC’s responsibilities have changed and she
can no longer continue the work.
DD suggested Ken Vassie at NPL, who is responsible for display
measurement, would be willing to take over. There were no other volunteers from participants, so this
was agreed. DD will therefore ask Ken Vassie to take over
the TC with the hope that he can finish the document within a year
or so. AD Johnson noted that coordination with D8 is important for this TC.
TC2-43 Determination of measurement
uncertainties in photometry.
Chair: G. Sauter (Germany) AD:
Sauter
ML: Bastie (France),
Corrons (Spain), Daubach (USA), Ellis (USA), Gaertner (Canada), Goodman (UK),
Moore (UK), Ohno (USA) - Aug. 2002
TR: To prepare a CIE
recommendation as the basis for the determination of measurement uncertainties
valid for selected quantities used in photometry.
ST: TCC Sauter reported. The document is ready except for the question of whether weighted fits should be used for distribution temperature, which is dependent on the conclusion from the reportership (R2-35, Robertson) created at Tokyo meeting. Once this is resolved, the document will be ready to send to the Editor and for TC ballot.
TC2-44
Vocabulary Matters
Chair: J. Gardner (Australia)
ML: Billmeyer (USA),
Burghout (Netherlands), Ionescu (Romania), Johnson (USA), Kohler (BIPM), Morren
(Belgium), Nishi (Japan), Ohno (USA), Poppe (Hungary), Sauter (Germany),
Schanda (Hungary), Woo (Canada)
TR: To provide liaison
between D2 and TC 7-06 "Lighting Terminology" and support the
preparation of the new edition of the International Lighting Vocabulary in the
field of light and colour measurements.
ST: The Secretary received a written report from the Editor. Several terms that had been under discussion within D2, and that were discussed at the Tokyo meeting in 2004, were sent to the ILV committee as agreed by D2. A few items which generated further questions were held-over for further discussion, and deemed too late to be resolved in time for the coming revision. Some inconsistencies in revised terms from the different Divisions were raised, and harmonization efforts took place by email discussions between Schanda, Editor, DD2, and Secretary. Once the current ILV revision is complete, the next revision will not be processed for some years. The Editor proposes that this TC should continue, but not with fixed members. He suggests that efforts for future revisions of the ILV should focus on new terms that are established during the work of TCs. These will be approved when new TC documents are submitted for Division ballot. If any issues or conflicts of terms are raised during the ballot, a discussion should be generated within the Division by e-mail, with all interested parties able to participate, in order to reach agreement. The TC 2-44 Chair (i.e. Editor) will be responsible for collating all new terms ready for when the next revision of the ILV takes place.
AD Johnson suggested that the members of the TC that created the terms should become temporary members of TC2-44 when the relevant terms are discussed. DD supported the Editor’s suggestion to use email and the email reflector for the discussion, as it proved highly effective for recent discussions relating to the definition of radiance. Hengstberger emphasized that the focus of the committee should be on new terms and that it should not to re-open discussion of definitions of previously agreed terms unless absolutely essential.
TC2-45 Measurement of LEDs - Revision of CIE 127
Chair: K. Muray (USA) AD:
Sauter
ML: 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), Goodman
(UK), 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) – July
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 re-evaluate other parts including
spectral and color measurements of LEDs.
ST: TCC Muray
reported. A TC meeting was held in Leon on 16 May 2005. Prior
to the meeting Draft 5 had been distributed to TC members and to the Editor,
who edited the document. Several comments were received and minor changes to 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.
TC2-46 CIE/ISO standards on LED intensity
measurements
Chair:
J.
Scarangello (USA)
AD:
Sauter
ML: Angerstein (Germany), Bando (Japan),
Bouman (Netherlands), Bym (USA), Carr (USA), Distl (Germany), Ellis (USA),
Goodman (UK), Heidel (Germany), Hwang (Taiwan), Jones (USA), Lester (USA),
Moore (UK), Ohno (USA), Rastello (Italy), Sauter (Germany), Scarangello (USA),
Schanda (Hungary), Schumacher (Germany)
TR: To prepare a CIE/ISO standard on the
measurement of LED intensity measurements based on the CIE Pub. 127.
ST: TCC Scarangello reported. The TCC prepared a new draft (Draft 6), which was
simplified from the previous draft, as agreed at the last TC meeting. This will
be reviewed at the TC meeting in Leon on 18 May 2005.
After the D2 meeting, Secretary received a TC meeting report as below:
The TC met in Leon in May 2005 and reviewed the
sixth draft document, specifically focusing on scope, definitions, specific
tolerances, uncertainty calculation, and detector description sections. With
respect to scope, TC discussed including multiple chip or lens LEDs that are
within the size limit scope. On definitions, it was decided to remove
acceptance angles, allow mechanical axis and case temperature point to be
defined by the LED vendors, consider a "spectral intensity" definition,
and in general not include items like Tc or Tp, if they are defined elsewhere.
On tolerances, it was tentatively decided that tolerances are not needed,
because this is a measurement standard, and not an equipment standard. However,
a section on uncertainty calculation should be added with help from committee
members to write it. On detector descriptions, TC decided to just drop the
detector appendix since the standard is mainly a measurement definition and not
a guide.
TC2-47 Characterization and Calibration Methods
of UV Radiometers
Chair: open
AD:
Sauter
ML: Boivin (Canada),
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) - Aug. 2002
TR: Prepare a CIE recommendation on methods
of characterization and calibration of broad-band UV radiometers in the
spectral ranges of UVA and UVB for industrial applications.
ST: The former chairman, Gan Xu, resigned
before Tokyo meeting in 2004. DD Goodman tried to find someone from NPL, but
was not successful. There were no volunteers from the attendees. DD
will try to approach someone from Finland. A fairly complete draft
exists so there will not be much work needed to complete this TC.
TC2-48
Spectral responsivity measurement of
detectors, radiometers, and photometers
Chair: G. Eppeldauer (USA) AD:
Sauter
ML: 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), Saito (Japan), Sauter (Germany), Webb (USA), Xu
(Singapore), Schanda (Hungary).
TR: To rewrite the
technical report CIE 64 (1984) "Determination of the spectral responsivity
of optical radiation detectors" to update device and measurement
technology, and include the spectral irradiance and radiance responsivity
measurement for radiometers and photometers from UV to near IR.
ST: Ohno
reported for the TCC. The TCC prepared the 7th draft, which included
all the planned chapters, and distributed this to TC members in April. This
draft was discussed at the TC meeting in Leon on 16 May 2005. No major issues
arose. The final part of the document (on monochromators) will probably be
moved to an Appendix and the section on bandpass correction will be re-examined
in relation to work in TC2-60. After these changes are made, the draft will be
close to a TC ballot. The next
meeting is planned for Braunschweig in 2006.
TC2-49 Photometry
of Flashing Light
Chair: Y.
Ohno (USA) AD:
Vandermeersch
ML:
Andersen (USA), Arens (USA), Austin (USA), Berkhout
(USA), Couzin (USA), Ellis (USA), Eppeldauer (USA), Fedai (USA), Fryc
(Hungary), Gibbs (UK), Goodman (UK), Hengstberger (South Africa), King (USA),
Kohler (BIPM), Kondo (Japan), Rattunde (Germany), Rennilson (USA), Sagawa
(Japan), Schmidt-Clausen (Germany), Sauter (Germany), Tutt (UK), Vienot
(France), Webb (USA) – April 2003.
TR: Produce a technical
report for photometric measurements of flashing light, including derivation of
the photometric quantities applied to flashing light, measurement of light
sources, and calibration of photometers for flashing light.
ST: TCC
Ohno reported. The current draft document contains four methods. It had
been planned to standardize on one method for measuring effective intensity,
but little progress has been made
recently due to lack of visual experimental data to provide a solid basis for
the recommendation. A 1986 paper by US Coast Guard was found, which reported
vision experiments on trains of pulses at different intervals, which agree well
with Modified Allard results. NIST
now has a post-doc vision scientist in their staff and expecting to start a
vision science project where experiments on effective intensity are planned. On
the other hand, TCC is also preparing to make a progress on the draft report
without waiting for further experimental data.
Tutt commented
that having different results from different methods is a problem, and said
that improved methods such as Modified Allard may be preferred for new flashing
light technologies such as those using pulsed LEDs. Hengstberger supported the TCC’s intention to move forward
on the draft without waiting for input from D1, which has been requested for a
long time, and suggested that existing data should be reviewed.
TC2-50 Measurement
of the optical properties of LED clusters and arrays
Chair: G. Schuette (Germany) AD:
Vandermeersch
ML: Ashdown (USA), Sperling (Germany), Gibbs
(UK), Ikonen (Finland), Distl (Germany), Goodman (UK), Hai (Malaysia), Heidel
(Germany), Kohmoto (Japan), Mathe (Germany), Muray (USA), Ohno (USA), Pan (China),
Rattunde (Germany), Navvab (USA), Sauter (Germany), Steudtner (Germany),
Scarangello (USA), Stolyarevskaya (Russia), Young (USA) – revised May 2005
TR: To produce a technical report for the
measurement of optical properties of visible LED arrays and clusters, to derive
optical quantities for large LED arrays and recommendations for measurement
methods and conditions.
ST: AD
Sauter reported for the TCC. The TC met in Leon on
16 May 2005, attended by 18 members and 18 guests. Schuette took over as TCC after the last
meeting in Tokyo. Email reflector was set up in March 2005. The first draft (Draft 1a, not complete) was
distributed prior to the Leon meeting. The TC
discussed scope, terminology, and two issues: 1) operating modes and 2)
luminous intensity measurement. It was agreed that normal far-field luminous
intensity measurement will be included, as will continuous and modulated
operation modes, but that flashing light (covered by TC 2-49) and asynchronous
pulses shall be excluded. The TCC asked for inputs from members, and hopes to
update drafts before next meeting in Braunschweig in 2006.
TC2-51 Calibration of multi-channel
spectrometers
Chair:
R. Austin (USA) AD:
Johnson
ML: Goodman (UK), Hopkinson (UK), Prince
(UK), Pietrzykowski (Poland), Smith (USA), Bergman (USA)
TR: Produce a technical report for the
calibration of array spectroradiometers primarily for the determination of
colorimetric and photometric quantities, including sources of error in array
spectral measurements systems, evaluation of these errors, calibration methods
and methods for the determination of uncertainty. (Revised in 2003)
ST: No report
received this time. AD Johnson to
contact TCC on the status of this TC.
TC2-52 Addendum to CIE 121 for the Photometry of
Emergency Lighting Luminaires
Chair: G. Vandermeersch (Belgium) AD:
Vandermeersch
ML: Corrons (Spain), Ottosson (Sweden),
Rattunde (Germany), Stratford (UK), Weiss (Germany), Bedocs (UK), Rossi
(Italy), Price (UK, until 1/3/2003), Arens (USA, until 1/1/2002) - updated July 2003
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.
ST: TCC
Vandermeersch reported. The draft
document is in its final stages. The work is being coordinated with work by the
Emergency Lighting Panel of IEC34: the IEC recommendations cover what to
measure (these have now been finalized and are under national vote) and the CIE
document covers how the measurements should be made. The IEC recommendations
introduced a new parameter, emergency ballast lumen factor (EBLF), which is
very low, near 10%, and varies in time due to changes in battery output. They
also consider dynamic behavior of the lamp in the first 15 seconds.
TC2-53
Multi-Geometry Color Measurements of Effect
Materials
Chair: G. Roesler (Germany) AD:
Johnson
ML:
Pointer (UK), Naddal (USA), Pietrzykowski (Poland), Andor
(HU), Rastello (Italy), Gunde (SI), Fryc (Poland), Rodrigues (USA), Nofi (USA),
Rich (USA), Dauser (Germany), Gabel (Germany), Cramer (Germany), Baba (Japan),
Carter (USA), VanAken (USA) - April 2003
TR: Write recommendations for the color measurement
of effect materials.
Workplan:
(i) Comparison of the DIN and ASTM standards on Multigeometry color measurement;
(ii) Preparation of an educational section to combine most interests; (iii)
Recommendations from the educational section for the next meeting.
ST: TCC Roesler reported. The TC met in Leon on 16 May 2005. It was proposed to change the title and TR, since the meaning of “effect materials” was thought to be unclear. The proposed new title is: “Multi-Geometry Color Measurements of Gonio-apparent Materials and Metrics for Evaluation.” and new TR are: “Write recommendations for the color measurement and evaluation of colorimetric properties of gonio-apparent materials”; these were agreed by the D2 meeting with no objections. The TC also proposes to use notation of measurement angles relative to normal (according to the general practice in CIE), while ASTM uses notation of 0 to 180 degrees; there is potential for serious confusion. The TC also proposes to introduce aspecular (AS) angle (angle relative to specular reflection angle) for measurement.
A substantial discussion followed. Johnson suggested that consistency is important with CIE 15 and the TC2-39 document. He also noted a similar case (observation angle) in retroreflection measurement defining specific angles for given applications. DD proposed that she would write a letter to ASTM (prior to the next ASTM meeting in June 2005) requesting them to adopt CIE recommended definitions for the angle notation. D2 agreed to her proposal.
TC 2-56 (S) CIE/ISO standard on retroreflection
measurements
Chair: C. Miller (USA) AD Johnson
ML: Johnson (USA), Stratford (UK), Jenkins (Australia), Sorenson (Denmark), Rastello (Italy), Ledoux (France), Frank (Germany)
TR: To prepare a CIE/ISO standard on the measurement of retroreflective materials based on CIE Publication 54.2
ST: Andersen reported for the TCC. The TC met in Leon on 16 May 2005, prior to
which the TCC had completed Draft 1 and distributed it to
TC members for review. The TC noted
that there were some issues in CIE 54 that need to be looked at more closely
and discussed the need to ensure that definitions are correct, since this is a
standard and should be the point of reference for definitions. Based on the
comments at the meeting, the TCC plans to revise the draft within a few months
and have more complete draft ready by the next D2 meeting.
TC2-57 (S) Revision of CIE S014-2
Chair: A. Robertson (Canada) AD Johnson
ML: Bristow (Sweden), McGinley (Austria),
Zwinkels (Canada), Rich (USA), Schanda (Hungary), Pointer (UK), Hirschler
(Hungary), Ohno (USA) – updated May 2005
TR: To revise CIE Standard S014-2 (Colorimetry Part 2: CIE Standard Illuminants) to include Illuminant D50.
ST: Zwinkels reported for TCC. The TC was established at the 2003 D2 meeting in San Diego on the understanding that it would not start work until the current revision of S014-2 was completed. The latest draft of this current revision (CIE DS 014-2.2/E:2004) has been approved by the CIE BA and CIE Division 2 and has been submitted to all CIE NCs for comments with a deadline of 2005-05-15. Once final approval is achieved, TC 2-57 will begin its work.
TC2-58
Measurement
of LED radiance and luminance
Chair: K. Kohmoto (Japan) AD Sauter
ML: Horak (Germany), Sliney (USA), Muray (USA), Goodman
(UK), Ohno
(US) + others to be agreed
TR: To prepare a CIE Technical Report setting out recommended measurement methods for the luminance and radiance of LEDs, taking particular account of the specific requirements of relevant photobiological safety standards
ST: TCC Kohmoto reported. There will be a TC meeting on May 18, 2005 in Leon. The TCC looked into a new commercial luminance meter designed to measure small size sources, and experimentally measured the luminance of several LEDs. The data will be presented and discussed.
After the D2 meeting, Secretary received a TC meeting report as below:
“In succession to discussion at the 1st Meting held in Tokyo, experimental measuring methods of LED luminance were investigated. Among them, actual measured results of conventional LEDs with a new commercial luminance meter were introduced. Luminance of both 5 mm oval type LEDs and Chip on Board (COB) type LEDs (color: white, blue, green and red) were measured by using the luminance meter with close up lens. Actual measured values of luminance on the surface of LED chip (white type) were over 300 kcd/m2 (for oval) and over 600 kcd/m2 (for COB). Applicable procedure of these measured values to photobiological safety evaluation were discussed. It could be recognized that it will become more important to specify clearly measured area on LED chip for photobiological hazard evaluation.”
TC2-59 Characterisation of Imaging
Luminance Measurement Devices
Chair: P. Blattner (Switzerland) AD: Sauter
ML: To be finalised
TR: To prepare a Technical Report on methods
for the characterization of imaging luminance measurement devices.
ST: TCC
Blattner reported. The TCC distributed two working documents (WG01 references,
WD02 Basic considerations) in April 2005. These were reviewed by the TC at its
first meeting in Leon on 16 May 2005, and the proposed structure of the report
and the terms and vocabulary were discussed. The TC agreed to focus first on
luminance, later on color or filtered-radiometric measurement. The TC will
first look at characterization parameters in Pubs. 69 and 53, and then discuss
additional parameters specific to imaging photometers. The TCC asked members
for contributions to the document. The next meeting is planned for Braunschweig
in 2006.
TC2-60
Effect
of Instrumental Bandpass Function and Measurement Interval on Spectral
Quantities
Chair: D. Gibbs (UK) AD: Sauter
ML: Guenther (Germany), Ohno (USA), Robertson
(Canada), Saito (Japan), Sauter (Germany), Schanda (Hungary), Sperling
(Germany), Steudtner (Germany), Kohmoto (Japan), Hai (Malaysia), Zwinkels
(Canada), Bastie (France), Scarangello (USA), Young (USA), Woolliams (UK),
Goodman (UK) – Feb. 2006
TR: To prepare a technical report that describes the effect
of instrumental bandpass functions and measurement wavelength interval on
spectrally resolved quantities and provide recommendations on suitable methods
to minimize the error introduced by instrumental bandpass functions on
spectrally integrated or weighted quantities.
ST: TCC
Gibbs reported. The TC had its first meeting in Leon on 16 May 2005 at which
the TR were reviewed. It was agreed that the scope should include
spectroradiometry of sources, spectrophotometry of materials, and spectral
responsivity of detectors. Methods of correction of bandpass will be included
for both mechanical scanning instruments and array spectrometers. The draft
layout of the report was discussed and agreed with no objections. Ohno
presented his new method for correction of bandpass (presented at AIC’05 in
Granada) and will sent the spreadsheet for this method to committee
members. The TCC plans to
circulate a first draft later this year, and have next TC meeting in June 2006.
8.4 Reporters
R2-21 Use
of detectors as absolute transfer standards for spectroradiometry
Reporter: N. Fox (UK) AD: Sauter
TR:
To
review the potential use of absolutely calibrated spectroradiometers as
transfer standards
ST:
DD Goodman reported. There are some developments but
technology is not moving as quickly as anticipated. DD proposes to close this
reportership and will ask the reporter to produce a report summarizing his
conclusions, to be possibly included in the CIE collection. D2 agreed to close
this reportership with no objection.
R2-23 ISO/CIE Standards for the measurement of
reflectance and Transmittance
Reporter: D. Rich (USA) AD: Johnson
TR: To investigate the need for converting the CIE technical report on reflectance and transmittance measurement (CIE 130) to a joint ISO/CIE standard
ST:
No report received
this time.
R2-27 Field Measurement for Traffic
Signals
Reporter: C. Andersen (USA) AD: Vandermeersch
TR: To assess the need for a TC to produce
recommendations on field measurements for traffic signals, in particular those using LED
arrays.
ST: AD Vandermeersch reported. The reporter proposes to
close this reportership, as he does not think a recommendation can be developed
until we have correct metrology for measurement of LED modules. The
reporter will provide a written report later. D2 agreed to close this
reportership with no objection.
R2-28 Evaluation of Colorimeter Spectral Responsivity
Reporter: B. Kranicz (Hungary) AD: Sauter
TR:
To
review new methods for assessing the ‘quality-of-fit’ of the spectral
responsivity of colorimeters, particularly for use with new sources such as
LEDs.
ST:
No report
received. AD Sauter to contact the
reporter.
R2-32
Visual
Appearance Measurement
Reporter: M. Pointer (UK) AD: Johnson
TR: To monitor the work of Divison 1 on
visual appearance measurement, which will include potential new measurement
areas
ST: DD Goodman reported. There is a TC on this subject in
D1 and the reporter is working as a liaison with D2. (This has been established as a reportership rather than a
liaison activity because it is on a specific topic.) TC1-65 now has 24 members. A copy of a National Physical
Laboratory Report “Measuring Visual Appearance – A Framework for the
Future” was circulated to TC members for informal comment in 2004. The response
was favourable and the report has now been reformatted to form a draft CIE
Technical Report. Some changes from the original document were necessary
– in particular, some of the sections were reduced in length or detail.
The draft Technical Report was circulated to the TC members in January 2005
with a request for comments by the end of April 2005. 15 members responded: 2
approved the report as it stood and 13 submitted comments, some quite
considerable. The report will now be modified in the light of these comments
and then resubmitted for Committee ballot.
See Attachment 2 for the full report from M. Pointer. The second meeting of the Technical Committee is being held on 17 May 2005 in León.
R2-33 Measurement of Laser-Based Projection
Displays
Reporter: K. Niall (Canada) AD: Sauter
TR: To describe concepts and methods of
photometry for the comparison of laser-based projection displays.
ST: No report received. AD Sauter to contact the reporter.
R2-34
Methods for Characterising and Calibrating
Detectors in Photon Counting Regime Reporter: M. L. Rastello (Italy) AD: Sauter
TR: To consider the emerging
requirements for characterisation and calibration of detectors in the photon
counting regime.
ST: Rastello reported. This reportership was
established in 2002. Much work is in progress in this area. There was a
workshop on single photon technology at NIST in 2003 with large attendance. A 2nd
workshop on the same topic is planned at NPL for October 2005. The reporter
plans to have a conclusion on this reportership at the next D2 meeting.
R2-35 Uncertainties in Distribution
Temperature Determination
Reporter: A. Robertson
TR: To
investigate the potential effect of a change to the definition of distribution
temperature to include a statement regarding weighting the spectral
distribution values by the uncertainty of the measurements at each wavelength.
ST:
Ohno
reported. Secretary received a
written report from the reporter, which is posted on the website. This is a
3-page report, which explains the background of the problem discussed last year
during the TC2-43 meeting and D2 meeting. The report highlights that weighting
the spectral distribution data by the measurement uncertainty yields different
results to those obtained using unweighted data. The recommendation of this Reporter
is that, even though the use of weights may be justified from a theoretical
statistical point of view, weights should not be used in practice because they
can introduce small errors in certain common situations. See Attachment 3 for the full report from the
reporter. This reportership will
be closed.
8.5.
Liaisons with other Divisions
Division 8 (A.
Kravetz)
Ohno read a written report from Kravetz: The following Technical Reports have been published:
· CIE 159:2004 from TC 8–01: A Colour Appearance Model for Colour Management Systems (CIECAM02). This TC will open a Reportership to follow the activities and then close.
· CIE 156:2004 from TC 8–03: Guidelines for the Evaluation of Gamut Mapping Algorithms.
· CIE 162:2004 from TC 8–04: Chromatic Adaptation Under Mixed Illumination Condition When Comparing Softcopy and Hardcopy Images. This TC will open a Reportership to follow the activities and then close.
TC 8-05 Criteria for the Evaluation of extended – Gamut Color Encodings is being balloted; deadline is 5/5/05.
TC 8 -08 is considering changing its terms of reference pending a review of developing algorithms.
8.6 Liaisons with other organizations
CCPR - Comité Consultatif de Photométrie et
Radiométrie (Y. Ohno)
Ohno reported.
CCPR Working Groups met in May 2004 at NIST. The next CCPR meeting and WG
meetings are scheduled for October 2005 in Paris, immediately after the NEWRAD
conference. Several Key Comparisons are in progress:
Spectral
irradiance CCPR K1a:
Draft A has been distributed, which showed much improvement compared with the
comparison carried out in 1991.
Aperture
comparison CCPR S2: Draft A is near
completion at NIST.
Hengstberger,
the President of CCPR, added that the WG on Calibration and Measurement
Capability (CMC) met for the first time last year. Members of this WG are RMO
P&R TC representatives rather than NMIs. This WG discusses service
categories and measurement capabilities that NMIs declare. CMCs are now fairly
complete (available at BIPM website) and will be maintained. The Working Group
on UV (Chair: Ikonen) is discussing a pilot comparison in vacuum UV below 200
nm.
Hengtsberger
also mentioned that a document is being drawn up to define the relationship
between CIE and CCPR, and that the SI brochure being prepared by CIPM will
include a section on photobiological quantities and includes input from CIE.
Further details
on Key comparisons and CCPR activities are available at http://www.bipm.org.
ISO TC6/WG3 Paper, board & pulps – optical
properties (J. Zwinkels)
Zwinkels
reported. This ISO WG will hold the next meeting in June 2005 in
Stockholm. Items to be discussed
include: new convener for WG3, new
work tem with ISO TC130 on visual appearance properties, and a proposal for an
ISO Standard for measurement of D65 brightness resulting in two ISO standards
for measuring this quantity (indoor and outdoor illumination conditions). This
WG is also responsible for standards for specular gloss. There are three
standards, two for 75° geometry (converging beam geometry and collimated beam
geometry), and one for 20° geometry.
The terminology does not agree with the CIE vocabulary. There is also
confusion regarding the definition of the wavelength (air or vacuum) in the
primary gloss standard. One of the planned actions is to review the terminology
with Pub. 17.4.
IEC
TC34 Lamps and related equipment (G. Vandermeersch)
Vandermeersch reported. “Related equipment” includes ballasts and luminaires. This is an active committee, meeting
two times a year, for a week each time. The TC’s main concern is electrical
safety of equipment. The TC published a new standard for DC supply HF
electronic ballast for emergency lighting (IEC 1346-7). At a recent meeting in
Spain, the TC discussed revising the document related to self-contained
emergency luminaires.
ISO on reflectance and transmittance
issues (D.
Rich)
Ohno reported for Rich. ISO TC 130: New work items are being
proposed for revisions to ISO 3664 on sources for visual evaluation of graphic
images and to ISO 13655 on the measurement of directional diffuse reflectance
factor (45:0) for the measurement of reflectance of printed graphic
images. In both cases, without
direction from Division 2 on the measurement of fluorescent materials, the ISO
will be recommending the use of instrument sources without UV content to try
minimize the impact of fluorescent whitening agents on the color of the ink on
the whitened substrate.
IDA (J. Rennilson)
No report received. Larry Leetzow mentioned that information is available at the IDA website.
OIML (G. Sauter)
Sauter reported. There are no issues to be reported this
time. Keep this function open.
IALA
(International Association of Lighthouse Authorities) (C. Andersen/ I. Tutt)
Tutt reported. There was an IALA
Workshop on lights and batteries in Dublin in 2004 that discussed recent
developments in light sources and power sources. One of the outcomes was a need
for input from CIE on uncertainty evaluation. IALA is also looking for
standardization in the method to determine effective intensity and looking for
progress in TC2-49. This is increasing in importance due to the use of pulsed
LED clusters. IALA is working on draft recommendations on emergency markings
for wrecks and for buoys with blue/yellow alternating light. DD suggested that
she would write to IALA welcoming their interest in CIE and the work being
carried out towards the development of an effective intensity metric.
IEC TC100 (Color measurement and
management in multimedia systems) (D. Rich)
Ohno received a report from Rich. There
have been no changes in the IEC standards with respect to the measurement of
light. There have been new standards issued that document supplementary
device-dependent color spaces.
9. Proposals
for dissolution of TCs and reporterships
No
TCs were proposed for closure.
Closure of the following reporterships was approved with no objections.
R2-21 Use of
detectors as absolute transfer standards for spectroradiometry
R2-27 Field Measurement for Traffic
Signals
R2-35
Uncertainties in Distribution Temperature Determination
10. Proposals
for new TCs and reporterships
(1) Proposal by Mike Pointer.
There is a strong
demand from manufacturers and users to have an open, standardized format to
communicate spectral and colorimetric data electronically. This was discussed
in the Colour Measurement Committee (CMC) of the Society of Dyers and
Colourists and a Focussed Interest Group of the National Physical Laboratory,
and they already have a draft specification and demonstration software. The
need for a standard was first proposed to ISO130 but, because this is a generic
issue rather than just for textiles, they suggested it should be a joint
ISO/CIE standard. The current specification is mostly for materials but it
could include spectroradiometry also. See a more detailed written proposal from
Pointer (Attachment 4). After a long
discussion, D2 agreed to establish this TC to write a technical report first,
rather than moving straight to a standard. The new TC was subsequently agreed
by the Board as follows:
TC2-61 Spectral and Colorimetric Electronic
Data Exchange
TR: To write a
Technical Report to define a specification for the electronic communication of
spectral and colorimetric data from measuring instruments.
Chairman: Mike Pointer (UK)
Initial members: Elsie Coetzee (ZA), Robert Dornan (UK), Peter Rhodes (UK), Gerhard Roesler (DE), Richard Young (US), Michal Vik (CZ)
(2) Proposal by K. Muray
TC2-45 is finalizing its work on revision of CIE 127 in order to publish it without further delay, but there are some remaining issues that will not be covered in the revision. Muray suggests that a new TC needs to be formed to address such issues as measurements in production control, operating conditions for high-power LEDs (including pulsed operation and other thermal control), and photometer spectral responsivity qualification. Comments were made that it is also necessary to look at other LED TCs and investigate what other aspects are not covered, e.g., OLEDs. D2 agreed to establish a reportership to prepare the TR and scope of the new TC for the next meeting. The reporter is Guenther Heidel (but TC2-45 members should support him.)
R2-36 Measurement requirements for solid state light sources
TR: To investigate the need for guidelines and recommendations relating to the measurement of LEDs, OLEDs and other solid state light sources that are not covered by other CIE Publications or TCs. Specific aspects to be considered include guidance for production areas, high brightness LEDs (e.g. pulsed operation and temperature control) and detector qualification (f1' etc.).
Reporter: Gunther Heidel
(3) Proposal by DD Goodman
DD received a letter from a D6 member who saw an article in a photobiology journal, which described stray light correction for measurement for UV sunbeds (280 – 400 nm), giving the impression that this correction is a trivial matter. The letter suggested CIE should consider this matter and send a short note to the journal to warn readers that it is a difficult procedure. DD asked whether we need a specific action on this or whether it can be handled in TC-51. Several comments were made, e.g., whether it is good to give just a warning without providing a solution or recommendation, whether just one journal is enough, etc. After lengthy discussion with no clear consensus, DD suggested that she would talk with D6 and the Board members to see what they suggest, and will also consult with D2 people before preparing an article for any journal, if this is decided to be the best solution.
(4) Proposal by E. Pierson
Pierson raised a need for recommendation on practical realization of a D65 source. This has also been discussed in D1 since no recommendation is given in CIE15:2004 for a physical D65 source. This is needed not only for colorimetry but also other applications such as measurement of phantom effects for signals, which requires a high power D65 simulated source. Zwinkels commented that she had a reportership in D1 some time ago, looking at feasibility of such recommendation as there were approaches using filters. A TC was later set up, chaired by Robert Herschler, but the direction of the TC went more towards assessing daylight simulators. There are two publications in Appl. Opt. on a D65 simulation source based on a xenon lamp. A comment was made that high power source to simulate daylight is also needed in the photovoltaic area. D2 agreed to establish a reportership on this subject as follows:
R2-37 Industrial lighting requirements for a D65 illuminant
TR: To investigate the requirement for a
specification for a practical D65 source for use in industry, particularly the
lighting industry.
Reporter: Etienne Pierson (BE)
(5) Changes to TCs, reporterships, and liaison functions.
No
changes on liaison functions.
Changes
of title and TR in TC2-53 have been agreed – see TC report.
11.
General issues (DD
Goodman)
11.1. New Director for Division 2
Goodman’s second term as DD will end in 2007, and a new DD will need to be appointed at that time. To start the process, DD will send an email to all the D2 members asking for nominations for the director. A vote (Country Members only) will then be held. DD announced that the D2 Secretary, Ohno, would be happy to be nominated. It was also mentioned that CIE BA would like to have a list of candidates of at least two names.
11.2. Future D2 Symposia
(1) 2nd CIE Symposium on Measurement Uncertainty, 12-16 June 2006, hosted by PTB, Braunschweig, as agreed in Tokyo. There will be a Tutorial and Workshop, combined with D2 meetings and Interlumen (a meeting of German lighting society). It was mentioned that there is a conflict of dates with ASTM E12 in June. AD Johnson to check and look for possible solution. Sperling mentioned that the dates of symposium and D2 meetings are not changeable because hotel pre-booking cannot be changed due to the football World Cup.
(2) Follow-on symposia on LED measurements. A suggestion was made to have it with Quadrennial in China, but many thought it would make it too long. This is to be discussed again at the next D2 meeting.
(3) Follow-on symposium on pulsed source and temporal aspects. No definite plan yet – to be discussed again at the next D2 meeting.
11.2.
Future Directions for Measurement R&D
DD feels that the Division
needs to be more pro-active and identify measurement issues before they become
problems. The following items were discussed from the list of last year:
· Source
spectral measurement outside the current range of 200 nm to 2500 nm. This is particularly related to safety
requirements, where there is a specific need for measurements up to 3000 nm.
· Measurement
of OLEDs. This may be a
reportership in the near future.
· Smart
paper. This is more a topic for D8.
· Characterization
of fiber optics as a component of spectroradiometers.
· Measurement
in the mesopic range. There will
be a symposium on May 21, 2006 in Leon.
Keep watching the progress in D1.
New items discussed
· Near-field goniophotometry, for luminaries and extended SSL sources (E. Pierson)
· Hyperspectral imaging – spectral measurement in 2-dimensions (R. Young)
· EU project (iMERA) aimed at supporting research and development in metrology, which needs to be watched (Sauter). Further details to be available next year (Rastello). A liaison activity may be set up.
· EU Directive on maximum optical radiation exposure for workers (A. Gugg-Helminger). This relates to photobiological safety (D6) and possibly measurement requirements. The draft standard is available on the website (http://europa.eu.int/eur-lex/lex/LexUriServ/site/en/oj/2006/l_114/l_11420060427en00380059.pdf)
· IEC TC76 (laser safety) has a new draft document 60825-23. There are concerns in CIE and IEC on the photobiological safety of LEDs, which are currently included in the IEC laser safety standard as well as the CIE standard for photobiological safety of lamps (Blattner). Discussions are being held with IEC to try to harmonize the recommendations to avoid confusion. Werner Horak is leading this activity.
· Absolute methods for photometric measurement (Kohmoto).
12.
Future D2 Meetings:
2006
June 14-16 in Braunschweig, following the Uncertainty symposium.
2007 July 9-11, with Quadrennial Session in Beijing, China
2008 An offer has been made by IEN, Italy, for 2008 (joint meeting of D1 and D2). Another possibility is with NEWRAD 2008. To be discussed next year.
13. Any Other Business
No further issues were raised.
14. Adjournment
The Division 2 meeting adjourned at 5:00 PM.
Attachment 1 Agenda of 2005 Div.2
Meeting
Attachment 2 Report of R2-32 Visual Appearance Measurement (M. Pointer)
Attachment 3 Report of R2-35 Uncertainty in Distribution
Temperature (Robertson)
Attachment
4 Proposal: Electronic
Communication of Colour Information (Pointer)
