May 29, 2007
Minutes of 2006 CIE Division 2 Meeting
9:00
– 17:00, 16 June 2006
Braunschweig, Germany
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
VP: Vice
President
WG:
Working
Group
Attendees:
Jean
Bastie INM-CNAM,
France (CIE VP)
Peter
Blattner METAS,
Switzerland (TC2-59 chair)
Ulrich
Binder OSRAM,
Germany
Wout
van Bommel Philips,
Netherlands (CIE President)
Ellen
Carter Konica-Minolta,
USA (D1 Editor)
Antonio
Corrons IFA-CSIC,
Spain
Jeanne-Marie
Coutin INM-CNAM,
France
Richard
Distl Instrument
Systems, Germany
George
Eppeldauer NIST,
USA (TC2-48 chair)
László
Fülep GE
Hungary, Hungary
Jim
Gardner NMIA,
Australia (D2 Editor, TC2-44 chair)
Teresa Goodman NPL,
UK (D2 DD)
Teng-Hai
Lau Philips
Lumileds, Malaysia
Werner
Halbritter OSRAM,
Germany
Franz
Hengstberger CSIR-NML,
South Africa (CIE VP, President Elect)
Günther
Heidel OSRAM
OptoSemiconductors, Germany (R2-36)
Steve
Jenkins Steve
Jenkins and Assoc., Australia
Werner
Jordan OSRAM,
Germany
Hyun-Ho
Kim Samsung,
Korea
Kohtaro
Kohmoto Teknologue,
Japan (D6 AD, TC2-58 chair)
Thomas
Larason NIST,
USA (TC2-29 chair)
Dong-Hoon
Lee KRISS,
Korea
Cameron
Miller NIST,
USA (TC2-56 chair)
Kathleen
Muray* INPHORA,
USA (TC2-45 chair)
Gael
Obein INM-CNAM,
France
Yoshi
Ohno NIST,
USA (D2 Secretary, TC2-37 & TC2-49 chair)
Kosei
Oshima Otsuka
Electronics, Japan
Makoto
Okawauchi Otsuka
Electronics, Japan
Dae-Hee
Park Wonkwang
Univ., Korea
Seongchong
Park KRISS,
Korea
Seung-Nam Park KRISS, Korea
Sunglim
Park Optel
Precision, Korea
Jiangen
Pan Everfine,
China
Etienne
Pierson Laborelec,
Belgium (R2-37)
Reiner
Rattunde LMT,
Germany (TC2-40 chair)
Gerhard
Rösler GretagMacbeth,
Germany (TC2-53 chair)
Ichiro
Saito NMIJ-AIST,
Japan
Georg Sauter PTB,
Germany (D2 AD, TC2-43 chair)
John
Scarangello Philips
Lumileds, USA (TC2-46 chair)
Jens
Schuette EBT
Optronic Systems, Germany (TC2-50 chair)
Mihai
Simonescu NiM-Romania,
Romania
Marek
Smid CMI,
Czech Republic
Peter
Sperfeld PTB,
Germany
Armin
Sperling PTB,
Germany
Walter
Steudtner OSRAM,
Germany
Raisa
Stolyarevskaya ACOL
Technologia, Russia
Shu
Takeshita Tokai
University, Japan
Kamuran
Turkoglu UME,
Turkey
Guy
Vandermeersch IBE-BIV,
Belgium (D2 AD, TC2-23 & TC2-53 chair)
Predrag
Vukadin FBMPM,
Yugoslavia
Nobert
Wagner OSRAM,
Germany
Pierce
Webb USA
Emma
Woolliams NPL,
UK (TC2-60 chair)
Joanne
Zwinkels NRC,
Canada (TC2-25 chair)
Total 54 persons from 21 countries, including 15 country members. Underlines indicate country
members. * proxy for country
member.
Handouts
Agenda of 2006 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:
Carl Andersen (Vice
President of CIE-USA)
John Clare (New Zealand)
Iakyra Couceiro (Brazil)
Toni Gugg-Helminger
(Germany)
Neil Hodson (USA, TC2-32
chair)
Werner Horak (Germany)
Erkki Ikonen (Finland
country member)
Norb Johnson (D2 AD, USA
country member)
Jerzy Pietrzykowski
(Poland country member)
Mike Pointer (UK,
TC2-28, TC2-61 chair)
Alan Robertson (Canada,
TC2-57 chair)
Danny Rich (USA, TC2-39
chair)
Janos Schanda (Hungary)
Ian Tutt (UK)
Richard Young (USA)
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, except the orders of AD reports
would change.
4.
Approval of the 2005 D2
meeting minutes
The minutes of the 2005 D2 meeting in
Leon, Spain, which were distributed via e-mail circular and on the website,
were approved with one change. In
the report of TC2-23, the last sentence, stating that the issues on
measurements of TL5 lamps would be handled in a new Technical committee,
should be deleted.
DD Goodman thanked Secretary for his hard
work producing these excellent minutes.
She also requested all the TC chairs
present at the meeting to send written reports to Secretary afterwards to help
produce accurate minutes more easily, and also those TC chairs not present to
send short status reports so that next Activity Report will be completely up to
date.
5.
Director’s Report (T.
Goodman)
Reports on general CIE activities
1) Next
Board meeting will be in October this year, and the focus of the meeting will
be to finalize the technical program for Beijing. DD reminded everyone that the deadline for submitting
abstracts is September. In October, Board will review all abstracts, select
papers, etc., and arrange meeting schedules. There will be some unavoidable overlaps of meetings between
Divisions as usual, but the Board will do their best to minimize
conflicts. DD asked those who
submit abstracts to send her a copy also, so that she can prepare early.
2) It was
reported last year that the Board planned to have an extra day at the next
Board meeting to discuss future direction of the CIE, e.g., Division
structure. The Board asked for
inputs from people in advance of this discussion, but responses were very low,
which indicated that the current arrangements are generally satisfactory; thus
the extra day was cancelled. But,
DD emphasized that we want to make best use of everyone’s time, and she
welcomes any suggestions on how the CIE work can be made more efficient and
productive, and best way to coordinate our work.
3) The CIE
webshop for publication has been running already for some time, and DD asked
for any comments from those who have used it. There were positive responses from the several of the
participants and no issues were raised.
DD mentioned that standards and publications of other bodies such as
ISO, DIN, ASTM and IESNA are also available on the webshop (these can be found
by searching on the relevant standard number or title).
CIE receives a small margin from sales of all
publications ordered through the CIE webshop, regardless of whether or not they
are produced by the CIE, and DD therefore recommends using CIE webshop for all
such documents.
4) Also
reported last year was the list of CIE
‘recommended journals’. Most of the journals that are directly relevant to light and lighting are not
listed on the Scientific Citation Index, which often discourages researchers at
universities in particular from submitting their papers to these journals; many
papers therefore appear in less-relevant publications. The purpose of the CIE List is to
publicly-recognize those journals in light and lighting that can be considered
as being of the same quality as those on the Citation Index. Criteria have been agreed for
acceptance of journals on the CIE List, and the first three journals have been
accepted. This initial list will
be published very shortly in CIE News. The procedure for a journal to be listed
is that the journal editor should approach CIE to ask for acceptance and
provide evidence to demonstrate that they meet the published criteria.
Applications are then reviewed and, if they meet the criteria, approved by the
Publication board and the CIE Board. If D2 members know of any journals should
be listed, they should suggest that the editor to approach CIE. Hengstberger added that Divisions could
also propose journals to be listed (but they must still meet the same
procedures for acceptance).
5) Related
to Board’s work on ILV, DD asked Jean Bastie to give a brief report. The new ILV is being prepared in two
separate chapters, one for basic terms, another for applied terms. All the
terms are listed in alphabetical order.
There have been a lot of
discussions on harmonization of these terms, as the work was done separately in
each Division and there were some conflicting definitions. These have been
resolved, and the new ILV is near completion, though the timetable is not yet
clear. Kohmoto asked about IEC/CIE
joint publication. First ILV will
be published as CIE work, then CIE will offer IEC to adopt as joint publication.
General issues relating to Division 2 activities
1)
Uncertainty evaluation is currently a very active topic, as apparent from the
highly successful symposium just held.
Many of our TCs are therefore beginning to prepare sections on
uncertainty evaluation in their draft reports, which might duplicate the
contents of the TC2-43 report or, more seriously, conflict with it. It is important that messages that come
out from the CIE are consistent and that people have a central reference rather
than looking for information in different reports. Thus, DD has decided to set
up a small working group within the D2 management team to prepare guidelines
for TCs, setting out what level of detail they should include in their reports,
what aspects should be covered, where reference should be made to the TC2-43
report, etc., in order to have consistency in the way we treat uncertainties in
all D2 work. DD asked all the TC
chairs to hold any work on the uncertainty sections of their reports until the
guidelines are produced. It should be ready in two months or so and will be
notified to everyone by an email circular and website.
Answering
questions, DD added that all TC chairs should have a copy of the TC2-43 draft
document, and noted that there will certainly be differences between technical
reports and standards in terms of the way in which information relating to
uncertainties should be presented.
A template for the uncertainty sections of reports might also be considered.
2) The TC
meetings this time were attended by a large number of people, with more than 80
present at one of the meetings. Running a TC meeting in such cases is
difficult. DD heard that many
participants were disappointed that they did not understand what was being
discussed, and felt that not enough background information was given. DD apologized for that situation, but
she emphasized that the purpose of TC meetings is to move the TC work forward.
While a short introduction of the objectives of the TC can be helpful for
members as well as observers, and should be encouraged, it is not the purpose
of the TC meetings to spend time explaining the background to the work or
reconsidering issues that have already been debated by the TC members. DD also heard that, after the TC
meetings, many people asked to become members. DD has a concern that some TCs already have more than 30
members, and that too large a membership will make it difficult for TCs to work
effectively.
Considering
the best way to manage this, DD suggested that stricter guidelines should be
set up for acceptance of new members by the TCC. Those who wish to
be a member of a TC should contact the TC chair in writing, including
information on what expertise they have to offer that is relevant to the work
of the particular TC and making a firm commitment to contribute. The TCC should consider their requests based
on this information. The same
should be done in the case of inactive existing members, to reconfirm their
interest. DD emphasized that
acceptance of members is the discretion of TCCs and they should manage the
membership list for efficient TC work.
Lengthy
discussions followed, and the following points were discussed (these are not
necessarily consensus):
·
It would not be realistic to set a limit to the number
of members.
·
In the course of TC work, if any member is not active
at all, such members should be deleted.
Such members, however, should be contacted first before being deleted so
that they have a chance to object.
·
If anyone contributed at early stage and became
inactive later, the person should still be kept as a member, and such
information should be handed over if the TC chair changes.
·
Each country has a right for one member for each TC,
and such a request would be accepted, but if the person is not active, the same
rule should apply.
·
There could be an option to keep some people as
observers, but we should be careful that those who only want to collect
information from the TC should not be members.
·
Attendance lists for TC meetings should not include a
column member/guest.
·
The members are listed in the final publication is not
consistent. Some reports show
lists of members and advisors but others show only members. Some TCs list all those who voted as
members. Some guidelines are
needed for finalizing member list for publication as well as managing
membership during the course of TC work.
It was
agreed that DD would draw up some guidelines for TC membership and bring the
issue to the attention of all on the D2 mailing list.
Muray made
a suggestion related to all TC work.
In her experience, the scope (TR) of the TCs tends to be too general,
and the TC work takes a long time. Industry generally needs standards more
quickly, e.g., standards on LED measurements. She suggested that it would be better to have more TCs with
fewer set goals and to try to finish the work done more quickly. DD agreed in general that TC work
should be done more quickly, but she also expressed concern about having too
many TCs for small questions. DD
emphasized that, although TR are defined when the TC is established, it is
possible to change these later (with the agreement of the Board) to adapt to
changes of situation or industry requirements. Heidel added that, in the case of LEDs, changes are so fast
and new devices keep coming out and new questions keep rising, which delays the
TC work. DD reiterated her point
that the TR can be changed in such cases, e.g., to exclude these new devices in
the scope so that the document can be finished without dealing with new
questions.
6. Secretary’s
Report (Y. Ohno)
Membership: D2 now has 36 country members, no change from last year. The country representatives of Brazil, Turkey, and South Africa have changed since the last D2 meeting.
Reports Issued: The minutes of the 2005 D2
meeting (Leon, Spain) were produced and distributed via e-mail circular in May
2006. The Activity Report –
May 2006 was also produced and distributed at the same time. Secretary
apologized for the delay of distributing the minutes this time due to some
difficulties in his work schedule for the past year.
Division 2 Mailing List: This now has 193 persons (last
year 190). The e-mail addresses
are protected, and are available as the subscriber list of the D2 email reflector,
which is password-protected (user id: cie2, password=vienna). The Secretary
tries to keep all the addresses updated as far as possible, but there are
always a few addresses that do not work. The Secretary therefore requests
everyone to inform him of any changes of e-mail address, to ensure that D2
information can be distributed to everybody. The message archive is also
available and accessible with the same password.
D2
website: This has
been updated as often as necessary. There have been no major changes in
structure. The TC status is
updated every year on the TC page. We have 11 TC drafts posted with password
protection. Secretary requested all the TC chairpersons to send him a copy when
they distribute a new TC draft so these can be updated. We have a global
password that can access all TC documents and TC passwords that can access each
TC documents. The global password is distributed only to CMs, TC chairs and
management team. The passwords for each TC can be distributed to all members of
each TC.
E-mail reflectors: TC2-60 has been added recently and now we
have six email reflectors for TCs. These are created on a request
basis. TC chairs who wish to
create a reflector should contact Secretary. All email reflectors are protected
not to distribute messages other than from subscribers. The subscriber lists
are available at links at the bottom of D2 home page (protected by the same
password). Secretary encourages
all TC chairs to use email or email reflectors to make progress in between TC
meetings.
Symposia: Secretary assisted PTB organizing
the Uncertainty Symposium and scheduled the ten TC meetings in one and half day
in Braunschweig this time.
DD Goodman asked all the TC chairs to
make sure that the latest draft of all the TCs are available to Secretary so
that the list on the website is complete.
DD also emphasized the usefulness of the email reflectors, e.g., when
feedback is needed on some specific questions quickly.
Finally, DD
expressed her big thanks to Secretary for his continuing excellent work on
website, reports, and organizing meetings. This was enthusiastically endorsed
by all those present.
7.
Editor’s Report (J. Gardner)
Two standards
have gone to NC ballot since the last meeting:
CIE
DS 014-1.3 "COLORIMETRY - PART 1: CIE STANDARD COLORIMETRIC OBSERVERS
CIE
DS 014-2.3 "COLORIMETRY - PART 2: CIE STANDARD ILLUMINANTS"
In the NC vote,
only 10 country members (out of 36) responded to the ballot. One negative vote
received from Hungary has been resolved, and both documents will be sent
shortly to CB for publication.
The status of ILV
was covered in Director’s report as reported by Bastie. Many documents refer to the numbering
of items in ILV. The numbering
will disappear in the new ILV, and items will be listed by name only. D2 terms are all in basics area. Changes in D2 terms are mostly addition
of new terms, and changes in old terms are very few (including distribution
temperature).
TC2-39 has gone
through NC ballot and closed a few weeks ago. TC2-16, 25, 40, 45, 48 are well advanced and put into CIE
draft format, and close to going to TC ballots and NC ballots. TC2-45 is already in TC ballot.
The Editor’s role
is to allow TCs to concentrate on technical matters, without spending time on
formatting the details of the document and correcting typographical and
grammatical errors. The Editor asks TC chairs to resend the document to him
after substantial additions or alterations, and before ballots.
Editor recommends
TC chairs to use the TC draft template from the early stages of the document.
This is available at: http://www.cie.co.at/about/procedures.html.
He recommends use of Insert Comments on the draft for queries, and the use of
Track Changes so TC members can review any alterations made. Use Equation Editor for equations and
complex expressions, and Mathtype (a bug in Word was noted when cutting and
pasting objects). He does not recommend the use of Endnote for references
unless all authors have access to it. Word has various editing tools such as
styles for paragraphs, numbering, table of contents, cross-referencing,
bookmarks for field codes, etc. While Editor can insert these in TC draft
documents as appropriate during editing, he recommends that TC chairs learn
these and use them from the early stages of the document.
Vandermeersch
suggested that TC members be informed when document has been sent for Division
ballot or NC ballot. Secretary
will ensure that voting information will be posted on the website (What’s new
area) and also to send an email circular.
It was also noted
that attachments in email can be stripped off by firewalls. It may be better to
send an email with no attachment and the file can be downloaded from the
website. Secretary commented that
he can post documents on the website (in the TC area) when requested by TC
chair, but it can be attached to email as well.
DD Goodman
thanked the Editor for his hard work to sort out a number of tricky issues and
for always responding very quickly to requests.
8.
Progress Reports from Technical Committees, Reporters, and Liaison Persons
8.1.
Associate Director Vandermeersch and TC chairpersons
Reports on TCs
2-23, 49, 50, 52, 61 were given.
8.2.
Associate Director Johnson and TC chairpersons
Reports on TCs 2- 17, 19, 25, 28, 32, 39,
42, 44, 51, 53, 56, 57 were given.
8.3.
Associate Director Sauter and TC chairpersons
Reports on TCs 2-16, 29, 37, 40, 43,
45, 46, 47, 48, 58, 59, 60 were given.
The
reports given for 8.1, 8.2 and 8.3 are summarized below in TC numerical order.
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:
Secretary read a written report
from Schanda. Draft 13 has been voted in favor by the TC, with one
negative vote. Editorial comments
were made by the CB and these have been incorporated in the draft. Unfortunately the Editor used an
earlier draft for this editing, and using the CIE Template destroyed some
earlier editorial corrections. The Editor tried to solve the negative vote
mentioned above, but this produced some further questions. The Chair is now in contact with the
Editor to sort out the still open question; it is anticipated that a further
vote by the TC will be necessary before it can be circulated in D2 and BA. This
document is very close to publication.
It was also mentioned that CIE Colorimetry book will shortly be
published from Wiley, and there is a chapter on tristimulus colorimeters, which
may be useful.
[Update] TC2-16 report has been published as CIE
179:2007 Methods for Characterising Tristimulus Colorimeters for Measuring the
Color of Light. (2007-5-18)
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: No report
received from TCC. Secretary
mentioned that Zerlaut first planned to hold a TC meeting in Braunschweig, but
there would not be enough members, and then planned to have a meeting jointly
with ASTM committee week in Toronto.
[Update] Report
received from Zerlaut after the meeting (2006-7-6): TC2-17 met on 28 June 2006, in Toronto, Canada. It has been
agreed that the TC's work will be based on SMARTS2 version 2.9.5. Two other salient results of the
meeting are: [1] Relevant tables of CIE Publication #85 will be re-constituted
using SMARTS2 ver2.9.5 and will initially include Tables 2, 4 and Column 2 of
Table 8; [2] the Chair will appoint four initial task group leaders whose
function will be to provide the TC with atmospheric and geometric input
parameters for spectral energy distributions designed for their specific
applications. The re-constituted Publication #85 spectra noted above will be
made available before the next meeting, which is planned for the spring of 2007
in Europe. A major agenda item for the next meeting will be to establish
criteria for breaking down the detailed spectral energy distributions into
wavelength bands that are amenable to simulations - and to being measured.
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: Goodman read a report from Johnson. The completion of this committee work has taken
longer than anticipated, and TCC is still working on the final report. The
technical work has been completed and results have been circulated informally
to the TC for some time. TCC intends to get the final draft to Editor and
complete the TC’s work by the end of this quadrennial.
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: Ian Lewin
(USA), A. Blochouse (Belgium),A.
Corrons (Spain), L. Bedocs(UK), A. Por (France), C. Stratford (UK), R.
Rattunde (Germany), G. Rossi (Italy), D. Gibs (UK), A. Ottoson (Sweden) –
rev. 2003.
ST:
Vandermeersch reported. The TC has not met since Leon,
but TCC is organizing a meeting in September. The intention of the TC is to
prepare a short addendum document to CIE 121, which will be numbered CIE
121-Part 2-2 and will definitively replace the old publication CIE 27. This
will cover photometric data to be measured (on the basis of D4
work), photometric methods, uncertainties and tolerances. The
following specific items to be dealt with were identified at the San Diego TC
meeting: transformation of photometric intensity tables measured according old
CIE 30-2; minimum measurement steps to guarantee accuracy in intensity
interpolations for lighting calculations; clear conventions to fix the
mechanical axes of the luminaire against the coordinate system; solve
contradictions between CIE 140 and CIE 121 regarding the first axis of a
luminaire; measurement of critical intensities for TI calculations (angles
above 70°; measurements of critical intensities
and upward flux for glare classification; specific problems linked to the
technology of new light source lamps (correct positioning, warm-up time,
stabilization, etc). There has been no major progress on these work
items since the San Diego meeting, except for the last but important item.
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: Zwinkels reported. A final version of the TC Report (Draft 12) was prepared by the TCC that incorporated the input of TC voting and editorial comments by TC members for Draft 11 and a revision of terms in the section on Terminology (Section 1.2) to make them consistent with the new fluorescence terms published in the CIE Standard on the Assessment of the Spectral Quality of Daylight Simulators for Visual Appraisal and Measurement of Colour (CIE S 012/E:2004). TCC has sent this final draft to the D2 Editor and he has completed the editorial review of this document. The revised draft (Draft No. 12.2 dated 2006-06-06) is now ready to be sent for Division ballot.
[Update] CIE CB has received completed draft and is preparing to start Division/BA ballot. (2007-5)
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: Goodman
reported. A written report also was received from TCC Pointer. The latest draft
is Draft 6. Since taking
over the Chairmanship of this TC from Peter Clarke in 2004, TCC has been
working on the draft of the technical report. His understanding was that the
report was near to completion and merely needed review and editing before
committee ballot. TCC circulated Draft 5 and received a response from only one
member out of 9 members. But it is
clear from the comments that the report needs further work of a technical
nature (mainly uncertainty issues) for which TCC does not have the technical
expertise to complete. Since Pointer was retiring and to resign the
chairmanship, Goodman proposed that she would take
over this TC for a short time to finish this document. The change was approved
by D2 unanimously. Carter
suggested that TC members should be updated. The latest draft has not been sent to all TC members, nor
the Editor, and this should be done.
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.
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: Larason
reported. TC met on June 15 in Braunschweig, attended by 47 people, including 7
members. Draft 4 (2006-5) was
circulated to the committee before the meeting, and was discussed at the
meeting. Most of the discussion centered on the TR and definitions. In
particular, there was lengthy debate on whether to strictly follow the TR and
TC title and limit the document to detectors only (e.g., photodiodes) or to use
the term “detector” in a broader sense and include amplifiers and possibly
displays. The later, broader used of the word “detector” seems to be in
line with the intent of the TR since the document is a report for the general
user as a “guide” and “aid”, and not a standard. This led to a discussion
of proposed ILV terms for “detector” and “linear detector” and whether these
terms should be used in the report or whether new terms should be defined. The meeting agreed TCC should review
the proposed ILV terms for “detector” and “linear detector” and suggest to the
TC whether these new terms should be used and if the TR should be modified. 8
people requested to join the TC, which will be followed up using the new
membership guidelines.
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: Secretary
reported. Hodson stated in a recent email that he retired from 3M last fall but
would continue chairmanship of this TC to finish the TC work. The document is
close to completion and TCC will send it to Editor soon.
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: Ohno reported. The TC document went through TC ballot (draft 7) in 2004 with no negative votes but several comments, some of which were inconsistent and need to be resolved. TCC is working on these comments and will send a revised draft to the Editor shortly and then send out to TC members again, for a second TC ballot.
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:
A
written report was received from the TCC, Rich. The final report from TC2-39
has been accepted in Division/BA ballot, but with a long list of comments -
mostly editorial in nature from Schanda.
Technical comments related primarily to the figures - which a TC member
had promised to fix for three years but never did. TCC will attempt to have them re-drawn. TCC has completed about 50% of the work
needed to address the comments and editorial changes. After this editing is done, the report will be published.
[Update]
The TC report was published as CIE 176:2006 "Geometric tolerances for colour
measurements." (2006-12-28)
TC2-40
Characterizing the Performance of Illuminance and Luminance Meters
Chair: R. Rattunde (Germany) AD:
Sauter
ML: Austin (USA), Bastie
(France), Peter Blattner (Switzerland), Czibula (Germany), Dezsi (Hungary),
Goodman (UK), Khandelwal (India), Khanh (Germany), Mahidharia (India), Ohno
(USA), Pietrzykowski (Poland), Saito (Japan), Sauter (Germany), Stolyarevskaya
(Russia), Vandermeersch (Belgium), Webb (USA), Xu (Singapore) – June
2006.
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: Rattunde
reported. A fourth
draft was prepared and distributed to the members on May 4, 2006. It had
already been edited by the Editor. The TC met on June 14 2006 with about 80
participants, with 7 official members (out of 16) present. Draft 4 was presented and discussed. The
general contents of the report were agreed. Further actions on technical
contents, formal structure as standard and time schedule for completion were
discussed. TC agreed to change the term “characteristic” to “index” and the
term V(l) match” into “V(l) mismatch”. The draft will be converted into
the CIE format for standards using the proper template by the Editor. Email
reflector will be setup to discuss final technical details for the draft. The
chapter of uncertainties will be left for discussion after receiving the
guidelines from DD. A final draft for TC ballot should be ready at the end of
this year so that the standard could be finished at the 2007 Beijing meeting.
Several new people requested to join the TC, which will be followed up per
guidance from DD.
Vandermeersch added that CEN WG 7
Characterization of Illuminance meters and luminance meters has been
established to produce a CEN standard. Vandermeersch is the convenor of this
WG. He explained that the proposed CEN document will concentrate on giving
users advice on how to use the classification and characterization parameters
set out in the TC2-40 document. DD
will raise this with Vice President Standards of CIE to avoid duplication and
conflict. Hengstberger questioned the general policy on classification of
instruments, as he believes all individual parameters are important and overall
classification of instruments may be difficult to apply. Rattunde replied that the
classification is already in DIN standard and it turned out to be very useful
by the users. DD encouraged
continued discussion by email reflector.
[Update] The TCC, Reiner Rattunde, passed away
in Nov. 2006. Peter Blattner (Switzerland), who has been active in the TC as
well as CEN WG7, agreed to take over the chairmanship of this TC, subject to
confirmation by D2 and the Board at the Beijing meeting. An email reflector for
the TC has been created.
TC2-42
Colorimetric Measurements for Visual Displays
Chair: K. Vassie (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: Goodman
reported. Following the proposal last year, Ken Vassie of NPL has taken over
the chairmanship from Christine Wall. With many other standards on displays
already available (e.g. from SAE, ISO, and VESA), Vassie began by reviewing
these and considering again the need for the TC. He noted that CIE is often
referred in these standards as the basis for the development of specific
methods. The VESA FPDM is currently the key display standard used in the
industry, but this document is very much an engineering document. There is a
need for more formal and scientifically-precise document for the type CIE is
known for, to augment and complement VESA standard. There are also several new standards in emerging OLED, LCD
displays, and the TC should review these emerging areas. Vassie suggests that
TC2-42 should continue for these reasons, but notes that progress will be over
several years. The TC will focus
on aspects that are different from other standards and avoid duplicating them.
The existing TC draft document will be re-examined and rewritten. It was suggested that cooperation with
Division 8 needs to be formalized or maintained.
[Update]: There
are some discussions in VESA about how to convert the FPDM document to an
international standard. They have formed an “International Committee for
Display Metrology” within SID to do this, separate from VESA but with the same
group that produced FPDM, and may seek cooperation with international
standardizing bodies including CIE. (Secretary, 2007-5-25)
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: Sauter reported. A revised draft was prepared following on from the discussions at the last meeting, and this was used as the basis for Tutorial part of the Symposium just held. The TC document is divided into 3 parts: the first part covers fundamentals (main document), the second part (Annex A) is 15 modules from which more complex uncertainty budgets can be developed, and the third part is examples for modules with Mathematica programs, which are being converted to EXCEL. The document explains that the GUM is good for linear models, but not sufficient in some cases like f1’. There is a reference to the Monte Carlo method which is being incorporated into a supplement to the GUM (to be published). The final report should be ready for TC ballot by August.
Hengstberger asked whether specific examples for individual TCs, not covered by this document, should be dealt with in each TC document or in a future revision to the TC2-43 document. An addendum (as in the case of CIE 121) is an option, which will be considered in the future.
Goodman suggested that it seems a much simpler guidance document on uncertainty evaluation is also needed in the industry. Long discussions followed, with pros and cons. Such needs are recognized but there was no consensus to pursue to develop such a document from CIE. Gardner commented that the examples given in this document are at practical levels, but the question is whether the descriptions are at a sufficiently practical level. Sauter will try his best to consider such needs in the final draft.
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) – this list is outdated and to be
revised.
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: Already covered in DD’s and Editor’s report. Preparation of publication of new ILV version is in progress by CIE CB and VP Jean Bastie. This TC should continue to organize new terms coming out. It was noted that the membership list is outdated. Editor feels that the whole division should be involved rather than members, and will propose a new membership scheme. Any new terms after the new ILV comes out will be collected from new TC documents published after the new ILV.
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: Muray
reported. The TC met on June 14, 2006 in Braunschweig. Draft 6 had been
circulated for TC ballot from January to March 2006, and was approved by 18 TC
members with no negative votes. Numerous comments were received from several
members, which were implemented into a final draft, Draft 7a, and distributed
to members again, prior to the Braunschweig meeting. After final checking, the
draft will be sent for Division and BA ballot.
The TC meeting discussed several
outstanding issues that have not been covered in the present document, and thus
form the subject for reportership 2-36 (Heidel). These are mainly related to
measurements for production control and thermal issues for high power
LEDs. See the section of R2-36 for
further details.
[Update]
The final draft was distributed for Division/BA ballot in September 2006, and
closed in December 2006. The
document was approved with several editorial comments. TCC and Ohno worked on final editing,
with CIE CB. The report was
published in March 2007 as CIE 127:2007 Measurement of
LEDs (2nd ed.)
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: Scarangello reported. The TC met on June 14, 2006 in Braunschweig. The seventh draft was distributed and reviewed. In addition to several editorial and format comments, the meeting focused on several technical issues that still remain. The first of these has to do with how to define more clearly the mechanical axis, in a general way that also covers the small multi-chip and multi-lens LEDs that are included in the scope of the standard. The second issue has to do with the need to specify the LED conditions with respect to temperature and forward current, since these have a major impact on the measurement. For temperature, some members would like to specify a specific Tj or Ta and some would like to keep the standard more flexible since Tj is difficult to measure and a specific Ta would limit the use of the standard. More discussion and negotiation is needed on this point. The third issue had to do with what to include in an uncertainty guideline section. Some ideas on this were discussed, in particular whether to include temperature in the uncertainty if it is not specified for the measurement. This discussion concluded with the input that we will get an uncertainty guideline to be used by all the TCs and we should wait for that. The last issue is that the document should be reformatted using the template for CIE standards.
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 broadband UV radiometers in the spectral
ranges of UVA and UVB for industrial applications.
ST: The former chairman, Gan Xu, resigned
in 2004 and the chairmanship has been open since then. The TC has a
substantially completed draft and it was felt at previous D2 meetings that it
is important to continue this TC. DD Goodman had contacted a few
possible candidates, but had not been successful. Armin Sperling of PTB offered at the
meeting to take over the chairmanship; D2 voted to approve this change of
chairperson with no objections.
TC2-48 Spectral responsivity measurement of detectors, radiometers,
and photometers
Chair: G. Eppeldauer (USA) AD:
Sauter
ML: Andor
(Hungary), Austin (USA), Boivin (Canada), Bouman (USA), Coutin (France), Dezsi
(Hungary), Gardner (Australia), Goodman (UK), Larason (USA), McArthur (Canada),
Pietrzykowski (Poland), T Saito (Japan), Sauter (Germany), Webb (USA), Armin
Sperling (Germany). Palmer
(USA-deceased), Rattunde (Germany-deceased) – updated May 2007.
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: Eppeldauer reported. The TC met on June 14, 2006 in
Braunschweig (8th meeting). Draft 9 was distributed prior to the meeting, and
discussed at the meeting. The uncertainty sections (3.6 and 3.7) have been
expanded and this new information was also presented at the CIE Expert
Symposium in a talk by Eppeldauer. Chapter 6 has been modified: only the
recommendations relating to calibration now remain in the main text and
information on instrumentation has been moved to the Appendix. A subsection on
bandpass effects and corrections has also been added to this chapter. In the
Appendix, a subchapter on the bandwidth normalization by moments has been
removed. The references are now complete. Editor has started editing the
document in CIE style. Some contributions to the uncertainty chapter from PTB
(Sauter and Stefan Winter), are expected. Some more minor corrections and
additions to improve the document further are expected before the final
editing.
TC2-49 Photometry
of Flashing Light
Chair: Y.
Ohno (USA) AD:
Vandermeersch
ML:
Andersen (USA), Austin (USA), Berkhout (USA), Couzin
(USA), Ellis (USA), Eppeldauer (USA), Fryc (Hungary), Gibbs (UK), Goodman (UK),
Hengstberger (South Africa), King (USA), Orrevetellainen (Finland), Rennilson
(USA), Sagawa (Japan), Schmidt-Clausen (Germany), Sauter (Germany), Tutt (UK),
Vienot (France), Webb (USA). Rattunde (Germany-deceased) – updated May 2007.
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: Ohno
reported. Progress has been slow,
since the TC is still waiting for visual evaluation data. However the TCC wants
to try to finish the rest of the document, as there is a strong desire to
standardize one method for effective intensity. He mentioned that NIST has
established a Vision Science project, within which it is planned to carry out
some effective intensity experiments in a few years time. A guest researcher to
work on such experiments would be welcome. Tutt said that he had attended an
IALA conference in China at which relevant papers were presented. He will send the proceedings.
DD asked TCC to
try to finish the document except for the remaining issue. One option might be
to separate effective intensity issue and finish the document only on physical
measurement part. The TCC will try
to follow that route.
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: Schuette
reported. The TC met on June 14, 2006 in Braunschweig with 64 participants. A
first draft (Draft 1B) was distributed to members prior to the TC meeting. The
meeting discussed definitions of some basic terms (modules, clusters, and
arrays), how to measure photometric quantities (luminance, luminous flux, etc.)
and how to describe uniformity in color (input from D1 suggested). It was requested that anybody with
knowledge from other documents on definitions of terms e.g., in ISO, should
contact the TCC.
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. DD will ask TCC for update on this TC. If the TC
keeps inactive, a new chairperson might be appointed. Peter Sperfeld was interested to take this on. Goodman
mentioned a joint NPL-SIRA document on multi-channel spectrometers, produced
several years ago, which could be used as a starting point. Hengstberger
mentioned that a bibliography was produced before (though not published and
probably outdated), which might also be looked at.
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: Vandermeersch
reported. The draft document is
ready to be sent to Editor prior to TC ballot. This document introduces methods
for EBLF measurements on ballasts. The new concept of EBLF has been now
accepted worldwide by emergency ballast manufacturers following the publication
in October 2006 of IEC standard 61347-2-7 “Particular requirements for D.C. supplied
Electronic ballasts for emergency lighting”
TC2-53 Multi-Geometry Color
Measurements of Gonio-apparent Materials and Metrics for Evaluation
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: Roesler reported. The TC met on June 15, 2006 in Braunschweig. A recommendation on angle notations proposed last year (to use angle relative to normal) was sent to ASTM, which they accepted. There was a question on the general CIE method of describing angles. DD clarified that relative to normal is the general convention, and it is in 2-39 document, which is now in Division ballot stage and close to publication. It was noted that activity continues in ASTM and DIN committees on the subject of this TC, with many common members from TC2-53. The draft report of TC2-53, which is now in accordance with the CIE template, has been distributed to members. The TC discussed additional contents for the report - normative references, requirements for calibration, instrument parameters, etc. Development of metrics will take some time, and the TC plans to publish a first report without metrics as Part 1, and Part 2 for metrics. It was suggested that a change of TR could be considered as an alternative method by which to narrow the scope of document. The TCC is advised to send a draft to Editor when it is substantially completed.
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: Miller
reported. The TC met on June 14, 2006 in Braunschweig and reviewed the current
draft. The definitions and measurement geometries were approved at the meeting.
Much of the time was spent discussing the different measurement techniques
available. The group agreed that different measurement techniques should be
allowed if they can be shown to produce equivalent results. TCC agreed to
perform experiments to resolve these differences in his facility at NIST. The
TC members will communicate through email until the next meeting in Beijing.
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:
A written report was received from the
TCC, Robertson. The TC was established at the 2003 D2 meeting in San Diego on
the understanding that it would not start work until the current revision of
S014-2 was completed. In October 2005, the CIE Central Bureau sent the latest
draft of this current revision (CIE DS 014-2.3/E:2005) to NC for a letter
ballot with a deadline of 2006-02-02. Once final approval is achieved, TC 2-57
will begin its work. DS 014 has only a few editorial issues to take care of and
will be published very shortly.
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: Kohmoto reported. TC met on June 15, 2006 in Braunschweig (3rd meting), attended by 51 persons. The TC reviewed previous meetings. This TC is for single chip LEDs, not including modules and arrays. The TC discussed table of contents, selection of terms for the definition section. The future action plan is to complete a 2nd draft and circulate it to members by the end of 2006. Members were requested to review and submit comments to the chairman by the end of March 2007. It was mentioned that TC6-55, chaired by W Horak, is investigating photobiological safety risks of LEDs. This TC will meet in September 2006 in Ottawa, and has invited TC2-58 members to attend. TC2-58 plans to have its next meeting in Beijing.
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: Blattner
reported. The TC met on June 15, 2006 in Braunschweig, with 54 participants.
Draft 0.3 was presented and discussed.
The TC agreed on the structure of the document. There was a discussion
about the model to be included in the Technical Report. Some preferred a
"black box" approach, others like to have access to raw data so the
calculations and evaluation can be done independently of the manufacturer.
Manufacturers need to be able to provide characteristic indices of performance,
but users need to be able to know how the data evaluation has been done in
order to establish an uncertainty budget. There was a general agreement on
having a mixed approach, including a chapter on the physical (internal) model
of ILMDs. TCC will prepare Draft 1.0 for the next meeting (to be held in
Beijing, July 2007) with the help of different coauthors. Feedback from
members, who are willing to contribute, is requested.
[Update]
With passing of Reiner Rattunde,
Blattner has taken over the chairmanship of TC2-40. He will work on TC2-40 with higher priority, and thus, TC2-59
work will be delayed unless a new chairman can be found.
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: The
Secretary received a letter from the TCC, David Gibbs, who has resigned as the
TC chair, as he was assigned to a role within NPL that is outside the field of
optical radiation metrology. Gibbs thanked all the members of the CIE for the
friendship that has been extended to
him since his involvement with the CIE.
Emma Woolliams of NPL offered to take over the chairmanship of the TC.
Emma explained that she recently worked on bandpass correction, as presented at
the Uncertainty Symposium. The
change of chairmanship was approved unanimously.
[Update]
An email reflector was created after Braunschweig meeting, and has been very
actively used. All members have
been confirmed and introduced, and Woolliams produced a first draft 1.0, with
members then taking turns to add more contents. Draft 2.0 has been done by Gardner, and 2.1 by Schanda.
TC2-61 Spectral and Colorimetric Electronic Data Exchange
Chair: M. Pointer (UK) AD: Vandermeersch
TR: To write a Technical Report to define a
specification for the electronic communication of spectral and colorimetric
data from measuring instruments.
Chair: Mike Pointer (UK)
ML: Coetzee (ZA), Dornan (UK), Rhodes (UK),
Roesler (DE), Young (US), Vik (CZ)
ST: DD
Goodman reported. This TC was
established in 2005 to progress the work that ISO TC38 Textiles originally
instigated but declined to forward, using the argument that it was too generic
to fit within their remit (textiles). Since then ISO TC 38 has reversed its decision
and is now to progress the work via a Working Group and it has therefore become
unnecessary for CIE to work on it. D2 agreed, with no objection, to close this
TC, and instead, establish
a reportership to keep liaison with ISO TC 38. The details of the reportership will be formalized
later.
8.4 Reporters
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: A written report was received from Rich. There have been no new standards on the measurement of reflectance and transmittance, nor have there been significant advances in any D2 TCs that may require the development of a standard. ISO 13655, on the measurement of the reflectance and color of printing, is under revision, extending their recommendation to include both a matte black backing and a matte white backing. ISO 5 series has been completely revised with new, clearer specifications of the requirements for density using spectral reflectance or transmittance measurements and numerical conversion to ISO Status Density (transmission density or reflection density). The series is schedule to go to ballot this fall. Rich recommends continuation of this reportership. (Full report is in Attachment 2).
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 for updates for activity report.
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. The technical work in this area
is primarily in TC1-65 Measurement of Visual Appearance. In April 2006 TC1-65
submitted a draft technical report for ballot by the Division and the CIE BA.
This report sets out basic building blocks for evaluation of visual appearance
of materials, that is, color, gloss, translucency, and texture. It describes
what is currently known and what is not, and suggests further research areas to
address. There will also be a CIE
expert symposium on visual appearance in Paris later this year. A detailed written report from M
Pointer was also received, which is attached in Attachment 3.
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. Zwinkels to contact the reporter or D1D
to update the status.
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: DD Goodman reported, based on a written
report from Rastello. As announced in Leon, SPW-05, Single Photon
Workshop 2005, was held at NPL last year. The main topics were single photon
sources, single photon detectors, low photon sources, and new equipment. More
than 80 people attended the meeting, 54 % from UK, 16 % from USA, and remainder
from the rest of the world. There are two new workshops are planned in the area
of single photon metrology for the future. SPW-07 will be held at IEN in Italy
in October 2007, linked with a workshop for an EU contract, called Symphonia,
which is concerned with single photons. SPW-09 will be held at NIST in 2009.
The EUROMET Photometry and Radiometry group has prepared a roadmap, entitled
“Towards quantum photon based standards” which will be included in the
forthcoming European Metrology Research Program. Within this particular
roadmap, photon techniques are considered to be powerful tools for standards in
the field of photonics and communication. A definite interest in these
techniques will be registered in photobiology and photochemistry as well. Rastello proposes to continue the
reportership for the time being, with a longer-term probable objective to start
a TC relating to calibration of photon counting systems.
R2-36 Measurement requirements for solid state
light sources
Reporter: G. Heidel AD: Sauter
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.).
ST:
Heidel reported. Based
on discussions at the TC2-45 meeting on June 14, there are a number of issues
that are not covered in the revision of CIE 127. The issues include measurement
of
high power, large area LEDs and chips, related thermal problems not experienced
with low current LED lamps (pulse measurement and temperature conditions), and
measurement of LEDs in production environments where high speed is required
with strictly limited space and correlation with laboratory measurement is
difficult. In particular, the measurement of partial flux and total flux in
production testing is a problem.
A lengthy discussion followed and a wide range of issues were raised. Many participants agreed that thermal issues for high power LEDs need be addressed urgently. Others commented CIE should not address production testing issues, although this view was opposed by some. There was no resolution from the discussions. DD proposed that Heidel prepares a written summary of issues he presented, including input from anyone else wishing to contribute (this input should be sent to Heidel directly), and that he should prepare an action proposal based on this for discussion at the next meeting.
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: E. Pierson AD:
Vandermeersch
ST: Pierson reported.
A two-page report (Attachment 4) has been submitted to Secretary. He contacted Robert Hirschler, the
chair of TC1-44, Janos Schanda, the chair of TC1-66 Indoor daylight Illuminant,
and also manufacturers of sources including Hunterlab and GretagMacbeth. His
findings are that systems simulating D65 are commercially available but they
are mainly for diffuse geometry and integrated systems, and sources for D65 are
not separately available. The CIE rating method (51.2-1999) is not yet widely
used. EN12899 requires that
chromaticity coordinates of road vertical signs be measured using a D65
illuminant, but the rating of the source is not mentioned. In conclusion,
Pierson recommended that the CIE rating should be used systematically not only
in other standards but also by manufacturers that produce such sources; and
also that the technical report from TC1-44 should be published as soon as
possible. This TC has been
established for more than 10 years but there has not been much progress
recently. He proposes no further
actions on this reportership.
Some discussions followed. There were
several comments suggesting investigation of other aspects, including some new
types of tunable sources available (using LEDs and digital micro mirror
devices), flash sources used in cameras for color reproduction (relation to
D8), the need for definition of practical day light source that can be more
easily realized, etc. It was also mentioned that the reference to the lighting
industry in TR for this reportership was confusing. In conclusion, DD is
to contact D1D to convey that D2 is anxious to have the report of TC1-44
published soon. It was agreed that this reportership be kept one more year to explore the issues raised at this meeting and
to prepare a final report and proposal for the next meeting.
8.6 Liaisons with other organizations
CCPR - Comité Consultatif de Photométrie et
Radiométrie (Y. Ohno)
Ohno reported.
CCPR meets once every two years in Paris, with the last meeting in October 2005
and the next meeting in June 2007 just before the CIE Session in Beijing.
President of CCPR is F Hengstberger. There are a number of Working Groups which
meet every year; the next WG meeting will be October 2006 in CENAM, Mexico.
These WGs are: Key Comparisons (chair, Ohno), Calibration and Measurement
Capabilities (chairman rotates), UV (chair, Ikonen), and Strategic Planning
(chair Hengstberger). WG-CMC consists of RMO Photometry and Radiometry TC
chairs, working to maintain service categories of the BIPM CMC tables, etc.
WG-SP was created at last meeting to discuss long-term plans and general issues
for CCPR activities. A big issue in WG-KC is to plan for the next round of KCs
and to establish some strategies in relation to RMO comparisons, as the CCPR
KCs have increasing numbers of participants and becoming difficult to conduct.
There are several KCs still in progress (see Attachment 5).
Division 8 (A.
Kravetz)
No report this time.
ISO TC6/WG3 Paper, board & pulps – optical
properties (J. Zwinkels)
Zwinkels reported. The next meeting of ISO TC6 is in Atlanta, GA (USA), Nov. 12-17, 2006. In August 2005, Byron Jordan (Canada) commenced his term as the new Convenor of this working group. There has been increasing recognition of the importance of having terminology in more strict accordance with CIE definitions. WG3 is responsible for 12 standards on reflectance measurements. The ISO Standards on colour methods have been renumbered under ISO number 5631. Thus, the following ISO standards: 5631, 16692 and 20312 have been renumbered to 5631-1, 5631-2 and 5631-3, respectively. ISO 5631-2 Paper and board – Determination of Colour – outdoor daylight conditions (D65/10°) is at the CD (committee draft) stage. ISO 5631-3 Paper and board – Determination of Colour (D50/2°) Diffuse Reflectance Method has been submitted for CD ballot. ISO 2471 Paper and board – Determination of opacity (paper backing) – diffuse reflectance method has been revised and is at the DIS stage. TC6 has liaisons with CIE, ISO TC130 Graphic arts, and ISO TC38 Textiles. A full written report from Zwinkels is in Attachment 6.
IEC
TC34 Lamps and related equipment (G. Vandermeersch)
No report this time.
ISO on reflectance and transmittance
issues (D.
Rich)
A written
report was received from Rich. The ISCC held a successful symposium on reflectance
measurement in imaging last fall after the IS&T Color Imaging Conference.
The level of agreement between commercial spectrocolorimeters is not adequate
to provide unambiguous characterization of digital printers and commercial
printing presses. The need for more reliable diffuse reflectance measurements
was raised during the recent CIE Division 1 meetings in Ottawa. New scanning
spectrocolorimeters are becoming very popular but they provide a non-contact
measurement of diffuse reflectance by placing the instrument a few millimeters
above the surface of the specimen and this configuration is not covered by any
international convention. Rich does not believe that non-contact diffuse
reflectance has been addressed in any D2 publication - though he has not made
an exhaustive search of our publications on the optical properties of
materials. Methods for evaluating
uncertainty in the measurement of the total radiance factor using polychromatic
influx that approximates a CIE standard illuminant is becoming a very critical
need.
IDA (J. Rennilson)
No report received.
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)
Secretary reported showing a presentation received from Tutt. There was a 16th IALA conference in China in May 2006, titled “Aids to Navigation in the Digital World”. Topics of interest covered in this conference were: LED Precision Sector Lights, Visual Experiments with Flashing LEDs (France), Visual Experiments with Flashing LEDs (Japan), Conspicuity of Marine Signal Lights (UK), Measuring Pulsed LEDs (UK), Proposed IALA Colour Regions for Signal Lights (Poster). Proceedings of these papers will be obtained and can be shared. IALA has a special Working Group on Lights and Colours, working on issues such as colour of signal lights, luminous intensity and range, measurement, and methods for calculating performance.
IEC TC100 (Color measurement and management
in multimedia systems) (D.
Rich)
There have been only simple maintenance
activities. (Rich, 2006-6-9)
9. Proposals
for dissolution of TCs and reporterships
·
TC2-61 to be closed. (See the section on
TC2-61 above)
10. Proposals
for new TCs and reporterships
·
A
reportership to replace TC2-61 will be formalized. (See the section on TC2-61
above)
Changes in TCs and reporterships
· The chair of TC2-47 changed to Armin
Sperling (Germany).
· The chair of TC2-60 changed to Emma
Woolliams (UK).
· The
chair of TC2-28 changed to Teresa Goodman (UK).
11. General issues
11.1. Future D2 Symposia
(1) Follow-on symposium on LED measurements: The last symposium on this topic was in 2004, Tokyo. It was agreed to plan a two-day symposium possibly for 2007, not linked with CIE Beijing, but combined with some other meeting. CORM was suggested. The plan will be finalized via email communication.
(2) Third symposium on uncertainties: The second symposium on this topic has just been held in Braunschweig. It was suggested that another symposium be scheduled some time after the TC2-43 report is published, in 2008 or after.
(2) Follow-on symposium on pulsed source and temporal aspects: This is not urgent at the moment, and will be considered for a longer timescale, 2009 or after.
11.2.
Future Directions for Measurement R&D
It was agreed that this should continue to be considered
within D2 in the future. The list of topics from the last couple of meetings is
still valid. If anyone has
additional items to add to the list, they should let DD know by email.
12.
Future D2 Meetings:
2007: July 9-11, with Quadrennial Session in Beijing, China
2008: An offer has been made from IEN, Italy. Another option was in conjunction with NEWRAD 2008 in Korea. D2 voted by majority to meet in Italy in 2008.
2009: Open. Discuss next year.
13. Any Other Business
No further issues were raised.
14. Adjournment
Goodman expressed her big thanks to G Sauter, A Sperling,
Sabine Rodrigues, and other PTB staff members
for hosting the Symposium and D2 meetings in Braunschweig. This was
enthusiastically supported by all present. The meeting adjourned at 5:00 PM.
Attachment 1 Agenda of 2006 Div.2 Meeting
Attachment 2 Report of R2-23 ISO/CIE Standards for the
measurement of reflectance and transmittance (Rich)
Attachment 3 Report
of R2-32 Visual appearance measurement (Pointer)
Attachment 4 Report of R2-37 Industrial lighting requirements for a D65
illuminant (Pierson)
Attachment 5 Report of Liaison - CCPR
(Ohno)
Attachment 6 ISO TC6/WG3 Paper, board & pulps
– optical properties (Zwinkels)