COMMISSION INTERNATIONALE
DE L'ECLAIRAGE
INTERNATIONAL COMMISSION ON ILLUMINATION
INTERNATIONALE BELEUCHTUNGSKOMMISSION
DIVISION 2: PHYSICAL MEASUREMENT OF LIGHT AND
RADIATION
ACTIVITY
REPORT
December
1997
Division 2 Physical Measurement of Light and Radiation
Director: Dr. F. Hengstberger
Associate directors: Ms. T. M. Goodman
Mr. N. Johnson
Mr. G. Vandermeersch
Editor Mr. J. Moore
Secretary Dr. Y. Ohno
Division 2 currently has 34 country members as below.
Argentina R. Lozano
Austria M. Matus
Australia J. Gardner
Belgium G. Vandermeersch
Brazil G. Moscati
Bulgaria V. Konstantinova
China G. Ye
Croatia M. Zeljko
Canada J. Zwinkels
Denmark L. Larsen
Finland T. Timonen
France J. Bastie
Germany G. Sauter
Great Britain T. Goodman
Hong Kong T. M. Chung
Hungary G. Dézsi
India B. Bhattacharya
Italy M. L. Rastello
Japan M. Nishi
Norway B. Brekke
Netherland J.M.M. Claassens
New Zealand M. White
Poland J. Pietrzykowski
Russia V. Ignatyev
Romania F. Ionescu
Slovenia S. Erste
South Africa F. Hengstberger
Spain A. Corrons
Slovakia J. Krempasky
Sweden A. Ottosson
Switzerland P. Blaser
Thailand U. Chanchanchop
Turkey L. Öztürk
USA N. Johnson
The 1997 CIE Division 2 meeting took place on September 4,
1997, at Durban Electricity Division, Durban, South Africa. In
conjunction with this Division 2 meeting, the following TCs met on
September 3, 1997 at International Convention Center. Minutes of
these TC meetings may be distributed to TC members. Brief reports
on these TCs are included in the Division 2 Meeting minutes
below.
TC2-36 Retroreflection: Definition and measurement (J.
Rennilson)
TC2-19 Measurement of the spectral coefficient of
retroreflection (N. Johnson)
TC2-40 Characterizing the performance of illuminance and
luminance meters (R. Rattunde)
TC2-29 Measurement of detector linearity (T. Goodman)
TC2-37 Photometry using detectors as transfer standards (Y.
Ohno)
TC2-39 Geometric tolerances for colorimetry (D. Rich)
TC2-16 Characterization of the performance of tristimulus
colorimeters (M. Rastello)
Prior to Division 2 Meeting on September 4, a joint meeting of
Div. 2 and Div. 4 was held for an hour and a half and is
summarized below.
Div. 2 and Div. 4 Joint Meeting
Date: 4 September 1997
Venue: Durban Electricity Division, Durban, South Africa
Chaired by: Hengstberger (Director, Division 2), and P.
Walravan (Director, Division 4)
D2 Director, F. Hengstberger and D4 Director, P. Walravan
opened the meeting at 8:40 am. There were about 40 attendees. G.
Sauter was congratulated on his birthday and his recovery from
illness.
W. van Bommel reported on the strategy and business plan of
CIE, as formulated on the "Future State Visioning Workshop," held
during September 1996 in Vienna, with CIE board members and
Central Bureau staff as participants. Discussion followed and
several opinions were expressed as follows: use of internet
(E-mail, WWW) by divisions, technical committees, and national
committees should be promoted; the business plan should include
attention to publicity, e.g. on TV, about CIE conferences.
N. Johnson reported on the D2 TCs related to D4 work: TC2-19,
25, 36, 32, 39. F. Hengstberger added reports on TC2-14 and 23.
Sorensen reported D4 TC s related to D2 work: TC4-25, 32. J.
Rennilson reported on the TC2-36. J. Schanda commented that
technical committees should make more use of correspondence
(particularly email) to accelerate completion of work. Problems
with the CEN document (CEN223) on driver needs for road markings,
and the applicable retroreflectance measurements were discussed.
The following points were noted: CEN did not ask CIE Division 4 to
handle the issue, i.e. no official requests were received from
CEN. However some CIE members are involved in the CEN committee.
H. Terstiege gave some details about the issue and those involved.
F. Hengstberger suggested that CIE should promote equivalence of
standards with the US and with Europe. Attendees agreed that D2
and D4 should meet jointly once in a while.
The minutes of the Division 2 meeting are given below. The
following abbreviations are used.
CIECB: CIE Central Bureau
CIEBA: CIE Board of Administration
D2: Division 2
AD: Associate Director
TC: Technical Committee
NC: National Committee
ML: Member List
TR: Terms of Reference
ST: Status
Minutes of CIE Division 2
Meeting
Wednesday, September 4,
1997
Durban, South Africa
Attendees:
R. Aldworth (CIE Past President)
J. Bastie (France)
P. Bhagat (USA)
A. Claasen (South Africa)
H. Schmidt-Clausen (Germany)
E. Coetzee (South Africa)
A. Corróns (Spain)
D. Couzin (USA)
O. DaPos (Italy)
T. Goodman, D2 Associate Director (Great Britain)
J. Hardis (USA)
F. Hengstberger, D2 Director (South Africa)
C. Hermann (CIECB)
J. Hsia, CIE President (USA)
N. Johnson, D2 Associate Director (USA)
R. Köhler (BIPM)
H. Löfberg (CIE Vise President Technical) (Sweden)
The Division Director, F. Hengstberger, opened the meeting and
welcomed all present. He introduced the Division officers present
(Associate Directors, Secretary, and Editor) and asked all present
to briefly introduce themselves.
2. Approval of agenda
The circulated agenda of this Division 2 meeting were
approved.
3. Approval of 1996 Division 2 meeting minutes
The circulated minutes of 1996 Division 2 Meeting in Vienna
were approved with no change.
4. Secretary's report (Y. Ohno)
The 1996 Activity report was issued which included the minutes
of 1996 Division 2 Meeting in Vienna. Six other circulars
including the announcements of the LED Workshop, the Symposium on
Color Standards for Imaging Technology, 1997 Division 2 Meeting in
Durban, and etc. These circulars were distributed by email / fax
each time, but also by physical mail in Dec. 96 and Apr. 97.
In April 1996, D2 mailing list survey was conducted, and the
mailing list was updated with numerous changes. The list currently
includes 97 persons, among which, 67 persons (43 a year ago) have
email addresses. Fax is used for ~10 persons, and ~20 persons are
accessed only by physical mail. We encourage more people to obtain
email access. Email (or fax) is now used as the main communication
means in Div. 2. Only important circulars are distributed also by
physical mailing, which occurs a few times a year.
There are now 34 national members, the same number as last
year. The national members of Austria and Denmark have changed;
see list above.
CIE Division 2 Home Page has been established with URL
"http://nml.csir.co.za/~cie2". This website provides the
information such as; Organizations (Division officers, Official
Division members, Current TCs, D2 Mailing List), Circulars and
Activity Reports (since Dec. 1996), and Division Meetings
Announcements. D2 thanks Dr. Hengstberger who made great efforts
to establish this website and will maintain it at CSIR.
Per a suggestion by CIEBA, D2 Activity Reports will also be
distributed to the directors and the secretaries of Division 1, 4,
and 6 to assure coordination of activities.
5. Editor's report (J. Moore)
The document from TC2-10 "The Photometry and Goniophotometry
of Luminaires" has been published as CIE Pub. 121-1996. The
following TC reports were edited:
"Measurement of Reflectance and Transmittance, including
Turbid Media" (TC2-14)
"LED Measurements" (TC2-34)
The following two ISO/CIE standards were edited.
"CIE Standard Colorimetric Illuminants" (TC2-33)
"The CIE System of Physical Photometry" (TC2-35)
The proposed new ISO/CIE Standard, "CIE Standard Colorimetric
Illuminants", received some negative comments in the NC ballot. It
has been amended to meet these criticisms and will be circulated
again for a second NC ballot.
After editing the proposed ISO/CIE Standard, "The CIE System
of Physical Photometry", a substantial change was proposed by a TC
member, which is now under consideration. The document may go
through modification and editing again.
6. Progress report of Technical Committees
Progress reports on TC2-04, 16, 17, 24, 28, 29, 34, 38, 40,
41, 42, and 43 were given by Associate Director Goodman. Reports
on TC2-11, 14, 19, 25, 30, 32, 33, 35, 36, 37, and 39 were given
by Associate Director Johnson. Reports on TC2-10, 22, 23 were
given by Director Hengstberger for Associate Director
Vandermeersh. Those TC chairpersons present gave their own
reports. The summaries of these reports are listed below in
numerical order of the TC.
TR: Produce a technical report on the selection and operation
of stable secondary standard sources.
ST: The document was about to go out for TC ballot, but one
national member expressed concern about the choice of photographs
used to illustrate the various types of lamp. The TC chairman
feels that illustrations are essential in a document of this kind
and is to discuss the problem with various interested parties in
the hope of resolving the problem.
TC2-10 Photometry and Goniophotometry of
Luminaires
Chair: G. Vandermeersch (Belgium) AD: Vandermeersch
TR: Prepare a report on the photometric characteristics of
luminaires and their measurement.
ST: The report has been published as CIE Pub.121. The TC is
closed. (D2 Director received a proposal from the chairman to
change the title and the scope of the report so that "lamp" is
included. The Director will send the proposal to the Central
Bureau. )
TR: Study gonioreflectometric properties of standard white
reference materials, including measurements and survey of
published data.
ST: The chairman proposed to close the TC, the reason being
that the subject matter has already been published in the NIST
Tech Note 1413, and also that the proposed additional
intercomparison between NIST and PTB was not likely to occur in
the near future. The chairman is to send the summary of the NIST
Tech Note and publish a short report in CIE news or CIE
Collection. The TC will be closed.
TC2-14 Measurement of Reflectance and Transmittance,
Including Turbid Media
TR: Define the standard geometric conditions for the
measurement of transmittance and reflectance.
ST: Division Editor reported. Since the document is fairly
large because transmittance and reflectance are treated
separately. Editing has been completed. There will be a Division
ballot shortly.
TC2-16 Characterization of the performance of
tristimulus colorimeters
Chair: M. L. Rastello (Italy) AD: Goodman
ML: Denner (South Africa), Goodman (Great Britain),
Hengstberger (South Africa), Moore (Great Britain), Muray (USA),
Ohno (USA), Rattunde (Germany), Robertson (Canada), Sauter
(Germany), Schanda (Hungary), Steindl (Austria), Terstiege
(Germany)
TR: To produce a report recommending methods for assessing the
performance of tristimulus colorimeter heads for measuring
chromaticity coordinates.
ST: The TC met on Sep. 3 and 5 in Durban. The third draft was
discussed. The chairperson asked for written comments within 2
months from all TC members to prepare the final draft for TC
ballot.
TC2-17 Recommendation for integrated irradiance and
spectral distribution of simulated solar radiation
TR: Revise and update CIE Publication No.20 (1972)
ST: A new draft "Solar simulators for testing purposes" has
been prepared and is being circulated in the TC. The chairman is
requested to circulate the document to all the D2 members for
comments before TC ballot in order to ensure a wide range of
applications to be considered. After edited by the Editor, CIECB
will convert the document to a PDF file, and the Secretary will
distribute the document by email.
TC2-19 Measurement of the Spectral Coefficient of
Retroreflection
TR: Identify the critical measurement parameters, tolerances,
and requirements for, and conduct an international intercomparison
of, the spectral coefficient of retroreflection.
ST: The TC met on Sep. 3 in Durban. The third draft of the
document was discussed. The next draft will be sent for TC ballot.
The intercomparison data (250 pages) will not be included in the
report, and decision is to be made on what to do with the data.
The TC would like to see the Technical Report made available in
disc form.
TC2-22 Luminous Flux of High-Pressure Sodium
Lamps
TR: Conduct an intercomparison of luminous flux measurements
on high-pressure sodium lamps.
ST: The TC chairman has moved to another organization. A
collection of papers relating to the intercomparison has been
retrieved and was handed to the Division Editor at the meeting,
but these are incomplete. The Editor agreed to prepare a short
report, based on the available material, for publication in an
appropriate CIE Collection. The TC is closed.
TC2-23 Photometry of Street-Lighting Luminaires
Chair: G. Vandermeersch (Belgium) AD: Vandermeersch
TR: Prepare a user's guide for the selection and use of
illuminance and luminance meters.
ST: A proposed outline of the document was circulated. Working
on preparation of a new draft, aiming at fairly basic, "down to
the earth" guide to the use of illuminance and luminance meters in
industrial, rather than scientific laboratory measurements.
TC2-25 Calibration Methods and Photoluminescent
Standard for Total Radiance Factor Measurement
TR: Prepare a CIE report on methods for measurement of total
radiance factors of photoluminescent materials. Recommendations
for realizing and calibrating photoluminescent standards by the
one and two-monochromator method will be included.
ST: TC met last in August 96, Vienna. The 5th draft of the TC
report was distributed in Nov. 1996. The TC will meet in Oct.
1997, at ISCC meeting, Baltimore. The draft after the next meeting
may be sent out for TC ballot.
TC2-28 Methods of characterizing
spectrophotometers
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: Third draft is almost ready with all the chapters
complete. Most figures and references are available, but a few
more need to be added. Expect circulation of the 3rd draft by the
end of 1997.
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: The TC met on Sep. 3 in Durban, discussed the latest
draft. Some revisions needed and some text to be added. Finish
sections on detector types, presentation of results, references
and diagrams. Next draft planned for December 1997.
TR: Prepare an annotated bibliography for the CIE journal on
diode array radiometry. Make appropriate recommendations for
future work in diode array radiometry.
ST: The chairman requested resignation from the TC chair due
to increased work load. The Secretary will contact the chairman
and try to retrieve the draft document. A decision for further
action is to be made at the next D2 meeting in Boulder.
TC2-32 Measuring Retroreflectance of Wet Horizontal
Road Markings
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: The chairman, T. Bradshaw (USA), resigned in 1995. A new
chairperson was sought, and a candidate, Mr. Hudson from 3M
Company, USA, was found. Division 2 agreed on the new chairman. He
will take over the TC after approval by CIEBA.
TC2-33 Reformulation of CIE Standard Illuminants A and
D65 (Revision of CIE/ISO 10526)
TR: To rewrite CIE Standard S001 in terms of thermodynamic
temperatures, and in a manner such that the spectral distributions
of the standard illuminants are preserved, but are independent of
international temperature scales.
ST: The document was circulated for NC ballot and received
some negative comments. Division Editor had a meeting with
Schanda, Johnson and Hardis on Sept. 3 and agreed on changes to
meet some of the objections. Division Editor will contact the TC
chairman to inform him of the changes and the amended document ill
be circulated again for a second NC ballot.
TR: To investigate and recommend standard LED measurement
methods including parameters to be measured.
ST: The final draft (4th draft) is in the hand of CIECB. TC
ballot is in progress, with deadline Sep. 21. After the Division
ballot, CIECB plans to publish the document before the CIE LED
Workshop starting Oct. 24, 1997, unless the document is voted
negative. Revision is planned in a few years, and a follow-up TC
may be established. (There were no negative votes in the Division
2 ballot in October and the Technical Report has been published as
CIE Pub.127-1997.)
TR: To prepare a new CIE Standard on the present V(l) and
V'(l) functions.
ST: The chairman received comments (to the edited draft) from
the TC members and from the ad-hoc meeting held on Aug. 30, 1996.
The chairman, the Secretary, and G. Sauter met at NIST on Oct. 18,
1996 to discuss the issue related to CIPM raised by Sauter. We
agreed that Sauter send to the chairman a rewrite of the scope of
the document for further discussion on this issue. The chairman
agreed to prepare a further version of the document as soon as he
has received the comments from Sauter and will circulate the
document again to all TC members.
TC2-36 Retroreflection: Definition and Measurement
(Revision of CIE Publication 54, Liaison with CEN/226) AD:
Johnson
TR: To revise and update publication 54. To standardize test
methods and measurement geometry for measuring the photometric and
colorimetric properties of all types of retroreflectors under both
day and nighttime conditions. To prepare this CIE document in ISO
format to be issued as a joint CIE/ISO standard.
ST: The TC met on Oct. 18, 1996 in conjunction with Division 4
meeting, inviting Div. 4 people. After the meeting, the 6th draft
was prepared. The TC met on Sep. 3 in Durban to discuss the draft,
which is close to completion. The document is planned for a
Technical Report, CIE pub. 54.2, and later, a shorter version is
to be published as a CIE/ISO standard. Schanda raised a concern
with the copyright with the CEN226 document. Although the CEN-CIE
agreement is forthcoming, the chairman is to send the draft to CEN
officially.
TC2-37 Photometry Using Detectors as Transfer
Standards
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: The fourth draft was prepared after the last meeting in
Aug. 96, Vienna. The TC met on Sep. 3 in Durban to discuss the
latest draft. Except for disagreement in the use of a few terms,
the TC agreed on the technical content of the document. After
resolving the terminology issues, the next draft (5th draft) is
planned for TC ballot.
TC2-38 Flare Photometry
Chair: F. Denner (South Africa) AD: Goodman
ML: Bargmeyer (USA), Gaurin (France), Godsiff (South Africa),
Rattunde (Germany)
TR: To produce a Technical Report containing recommendations
for the standardization of test conditions and test procedures for
the measurement of the photometric, radiometric and colorimetric
properties of flares.
ST: Chairman has submitted his resignation due to presssure of
work and suggests that the TC be closed. Interest in this area has
reduced in the past years. Division 2 agreed to close the TC.
TC2-39 Geometric Tolerances for Colorimetry
Chair: D. Rich (USA) AD: Johnson
ML: Baba (Japan), Bittar (New Zealand), Decarreau (France),
Erb (Germany), Fisch (USA), Hanssen (USA), Jordan (Canada),
Johnson (USA), Kravetz (USA), Ladson (USA), Terstiege (Germany),
Pietrzykowski (Poland), Verrill (Great Britain), Zwinkels
(Canada),
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: The TR has changed as proposed at Aug. 96 meeting in
Vienna. The TC met on Sep. 3 in Durban. An Interim activity report
(Sep. 3, 1997) was distributed. Literature of the subject has been
collected and reviewed. The current working program is to utilize
ISO 5/1 and ASTM E 1767, and to define specifications of
reflectance factor (t/8, d/8, d/0), radiance factor (45/0) and
transmittance geometries (0/0, d/0). Specifications will be
developed via computer simulation and verified experimentally. A
need for liaison with TC1-48 (revise Pub. 15.2) was addressed. The
chairman is to be on TC1-48.
TC2-40 Characterizing the Performance of Illuminance
and Luminance Meters
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: The TC met on Sep. 3 in Durban with 14 participants. First
draft was discussed. 80 % of the proposed contents were included.
The next draft will be rewritten in the ISO/CIE standards format,
including additional contents. The chairman requested further
written comments on the current draft. Some errors in Pub. 69 are
to be corrected in this document (Schanda). Liaison with OIML TC14
should be considered. Next meeting planned for Boulder.
TC2-41 Industrial Photometry in Developing
Countries
TR: To prepare a Technical Report giving guidance on
recommended practices for photometric measurement (including
sphere photometry and goniophotometry), taking account of the
special requirements of industrial laboratories in developing
countries.
ST: In an attempt to find an affordable solution for obtaining
low-cost reliable standard lamps for sphere photometry,
experiments have been conducted for the past year in a reputed
laboratory in India to establish the reliability of indigenously
manufactured lamps from components imported from developed
countries. The outcome of the experiment is encouraging. A draft
report on the finding of this experiment is under
preparation.
TR: To produce a Technical Report summarizing recommended
practice for the measurement of the colorimetric and
spectroradiometric properties of visual displays.
ST: The proposed contents of the report were circulated at the
end of 1996. Comments from members are being sought. Chairman is
maintaining strong links with other organizations working on VDU
measurements. The chairman is preparing a talk on this TC at the
coming CIE Symposium on Color Standards for Imaging Technology,
Nov. 1997, Scottsdale.
TC2-43 Determination of measurement uncertainties in
photometry.
TR: To prepare a CIE recommendation as basis for the
determination of measurement uncertainties valid for quantities
used in photometry.
ST: This TC was established in Sep. 1996. Due to the
chairman's medical problem, no draft has been written yet. There
was an internal meeting within PTB on this subject, and 20 page
notes were produced. Chairman plans to distribute the notes in
English by email. A guide-type document is aimed. The chairman
cannot come to Boulder. Work will progress by correspondence. The
first meeting may be in Warsaw.
7. Reporters
R2-05 Visual Gloss (J. Taylor, Great Britain) AD: Goodman
ST: The subject is not yet felt to be appropriate for a TC.
Will continue to monitor the situation.
R2-06 Standardization of Measuring Geometry for the
Colorimetry of Metallic Coatings (C. McCamy, USA) AD: Johnson
ST : ASTM E12 is meeting twice a year. The reporter work
should be continued.
R2-09 Absolute Cryogenic Radiometers (A. Parr, USA) AD:
Johnson
ST: Parr sent a brief status report to the Secretary.
Approximately a dozen national laboratories have cryogenic
radiometers to determine spectral responsivity scale and also to
realize photometric units. The CCPR is operating an
intercomparison of cryogenic radiometers. The results will be
available for the next CCPR meeting scheduled for 1999. At this
time, there has not been widespread usage and application of
cryogenic radiometers by industrial or commercial firms. As a
consequence there does not seem to be any need at this time for
CIE to take specific action. However, as the use of these devices
matures, CIE may want to explore the possibility of developing
standard measurement procedures. This reportership remains open
for the time being.
R2-15 Colorimetry of luster pigments (Grosswang, Austria)
ST: Closed.
R2-16 Optical multimeters (R. Distl, Germany)
ST: Closed.
R2-17 Aviation Photometry (Y. Ohno, USA) AD: Goodman
ML: Bhagat (USA), Hengstberger (South Africa), Verdier
(France)
ST: Report was given by Ohno and Bhagat. SAE (Society for
Automotive Engineers) has completed the draft document ARP5029
(Measurement procedures for aircraft anticollision lights), and
NIST has established calibration services for flash-photometers
for anticollision lights. FAA (Federal Aviation Administration) is
addressing needs for international harmonization in this area and
for more knowledge of human vision effects for flashing light
(such as multiple flashes). Schmidt-Claussen offered information
on ICAO (International Civil Aviation Organization). The chairman
will contact ICAO to obtain more information, and prepare
proposals for Divisions 2 and 1 for 1998.
R2-18 OIML Matters (G. Sauter, Germany) AD: Hengstberger
ST: No report this time.
R2-19 Emergency Lighting Luminaires (L. Bedocs, Great Britain)
AD: Vandermeersch
ST: Closed.
R2-20 Vocabulary matters (J. Moore, Great Britain) AD:
Hengstberger
ST: International Lighting Vocabulary is going to be revised,
and Division 2 is to provide the updated vocabulary manuscript for
the optical radiation measurement part. Moore reported that there
still was an incredibly large amount of work and would take a long
time. Division 2 decided to turn this reportership into a
technical committee with Moore as the chairman. Schanda, Kohler,
Sauter, Johnson, and Ohno offered support in this work.
R2-21 Use of detectors as absolute transfer standards for
spectroradiometry (N. Fox, Great Britain) AD: Goodman
ST: No report this time.
8. Liaison report
CCPR (Kohler)
Action has been taken to change the reportership from A. Parr
to R. Kohler. Kohler gave the following report. BIPM is drafting a
document on the "key intercomparisons" in order to establish a
basis for international recognition of equivalence. CCPR had a
special meeting in June 1997 to discuss this issue. Working Group,
Parr as the chair, proposed quantities for the key comparisons.
Currently proposed quantities include spectral irradiance
(200-2500 nm), spectral responsivity (200-1000 nm, 900-1600 nm),
luminous intensity / illuminance, luminous flux, spectral diffuse
reflectance, and spectral regular transmittance. A document. The
WG will meet in NEWRAD. Bastie will report CIE work at CCPR. Next
regular CCPR meeting will be April, 1999.
ISO/TC6 (J. Zwinkels)
No report this time.
ICO (F. Hengstberger)
No report. This reportership will be closed because its
importance has decreased.
IMEKO (J. Schanda)
There was a TC2 meeting, but Schanda could not attend. H.
Kaase (Germany) is the chairman of the TC. No meeting of TC2.
Interest has decreased, and the reportership may be closed.
IEC TC100
Y. Ohno has been appointed as the official D2 liaison. CIECB
will contact IEC for establishing official contact with the
liaison person in the TC100 activity. (The Secretary made a direct
contact and established a liaison with IEC TC100 PT61966 - Colour
Measurement and Management in Multimedia Systems, in Nov.
1997.)
TC2-44: Vocabulary Matters; J. Moore as the chairman.
Reportership R2-20 has been turned into this technical committee.
AD: Vandermeersch.
R2-22: Implementation of SI photometric units; R. Kohler as
the reporter. Moore proposed a new TC to prepare a short analysis,
for publication in a CIE Collection, of the effect of different
spectral luminous efficiency functions on the measurement units
and the problems of measurement when the spectral luminous
efficiency function of the observer does not correspond to either
V(l) or V'(l). Division 2 decided to establish a Reportership
because it was felt to be premature to establish a TC on this
subject at the present time.
11. Future meetings:
1997 CIE Workshop on LED Measurements, Oct. 21-25, at CIECB in
Vienna. Also, CIE Expert Symposium on Color Standards for Imaging
Technology to be held in Scottsdale, Nov. 21-22.
1998 CIE Div. 2 will meet in conjunction with
CORM98-international, at NIST, Boulder, USA. It is planned for May
18-19 (CIE), 20-22 (CORM). ISCC will be in the 3rd week of
September. CCPR will meet in the third week of September in
Paris.
1999 CIE Div. 2 will meet in conjunction with the CIE 24th
Session, Warsaw, Poland. Joint meeting with D1 is planned. CIE is
looking for a subject for CIE Symposium in 1999 from D2 topic.
Retroreflection was suggested.
2000 TBD
2001 There is an invitation by NIST(USA) which will celebrate
NIST Centennial. NIST is also inviting CIE Midterm, but it is not
decided. There will be Lux Pacifica in Vancouver. There will be
AIC Conference in Rochester in the last week of June.
12. Other business
1) Election of new D2 Director. Hengstberger asked for
nominations from D2 members by D2 meeting next year. There will
then be a postal vote and D2 will submit the names of two or three
candidates to CIEBA. CIEBA will then make the final choice,
balancing the representation from different countries. On taking
office after the CIE quadrennial meeting in 1999, the new Director
will appoint a new management team.
2) D. Sliney (D6 Director) requested that liaison with
Division 2 be established for the following TCs.
TC 6-34 Photobiological lamp safety standard. (Goodman to
follow up)
TC 6-45 Measurement of optical radiation hazard in work
place.
Division 2 Technical Committees
TC2-04 Secondary standard sources
TC2-14 Measurement of Reflectance and Transmittance, Including
Turbid Media
TC2-16 Characterization of the performance of tristimulus
colorimeters
TC2-17 Recommendation for integrated irradiance and spectral
distribution of simulated solar radiation
TC2-19 Measurement of the Spectral Coefficient of
Retroreflection
TC2-23 Photometry of Street-Lighting Luminaires
TC2-24 Users guide for the selection of illuminance and
luminance meters
TC2-25 Calibration Methods and Photoluminescent Standard for
Total Radiance Factor Measurement
TC2-28 Methods of characterizing spectrophotometers
TC2-29 Measurement of detector linearity
TC2-30 Diode Array Radiometry
TC2-32 Measuring Retroreflectance of Wet Horizontal Road
Markings
TC2-33 Reformulation of CIE Standard Illuminants A and D65
(Revision of CIE/ISO 10526)
TC2-34 LED Measurements
TC2-35 CIE Standard for V(l) and V'(l)
TC2-36 Retroreflection: Definition and Measurement (Revision
of CIE Publication 54, Liaison with CEN/226)
TC2-37 Photometry Using Detectors as Transfer Standards
TC2-39 Geometric Tolerances for Colorimetry
TC2-40 Characterizing the Performance of Illuminance and
Luminance Meters
TC2-41 Industrial Photometry in Developing Countries
TC2-42 The Colorimetry of Visual Displays
TC2-43 Determination of measurement uncertainties in
photometry
TC2-44 Vocabulary Matters
Division 2 Reporters
R2-05 Visual Gloss
R2-06 Standardization of Measuring Geometry for the
Colorimetry of Metallic Coatings
R2-09 Absolute Cryogenic Radiometers
R2-17 Aviation Photometry
R2-18 OIML Matters
R2-21 Use of detectors as absolute transfer standards for
spectroradiometry
