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September 2018 / #28

CIE Newsletter

This newsletter is a brief catch up on CIE activities this year, including the regular sections on new Technical Committees and publications.
CIE Events

It’s been a busy year for CIE events and the last few months of the year will be no exception, with the National Committee of Russia hosting a CIE Tutorial and Practical Workshop on CIE S 025.

This year saw the first of the CIE Topical Conference Series, the CIE 2018 Smart Lighting Conference, hosted by our Associate National Committee (ANC) of Chinese Taipei. The conference was held at the Grand Hyatt Hotel, right next to Taipei 101, which standing at 509.2 m, was classified as the tallest building in the world until 2011. The conference was attended by over 200 participants with total 115 presentations. This was a great turnout, given that this conference was held only seven months after our midterm meeting, which was held on Jeju Island in South Korea in October 2017.
The entire event included the conference itself, two days of tutorials – on colour vision and healthful lighting - and a site demonstration of smart lighting at the harbour of Keelung City. Our hosts CIE ANC Chinese Taipei did a great job in preparing the venue and organizing all events so that all participants were made to feel welcome and could comfortably participate in the event.
During the conference, there were many good papers on psychophysical effects of spectrum/CCT, health and well-being, and other lighting quality aspects; these made good scientific contributions and all underpin the development of reliable smart lighting applications.  

Once again a big thanks to ANC Chinese Taipei for a truly successful event.  Lastly, we look forward to seeing you all next year at the 29th Quadrennial Session of the CIE, which will be held in Washington DC, from June 14 – 22, 2019 – this is a date to add to your calendar!

Yoshi Ohno, CIE President

Call for Experts for CIE Technical Committees 
In case you like to contribute to one of the below, please revert directly via email to the TC Chair.
TC 2-90 (D2) LED Reference Spectrum for Photometer Calibration
The purpose of this TC is to investigate and publish an LED reference spectrum to complement the Standard Illuminant A. The TC will investigate and decide the spectral shape, wavelength range and the format to be used for publishing the reference spectrum. In addition a metric for the quality of the match of spectral distribution of real sources to the reference spectrum will be defined for the purpose of photometric calibrations.
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TC 2-91 (D2) Optical Measurement Methods of LED Packages and LED Arrays
The purpose of this TC is to define an international standard for the optical measurements of semiconductor light sources (in particular LED packages and LED arrays as defined in CIE S 017-SP1) to the extent to which they emit incoherent optical radiation. Semiconductor light sources in terms of this standard are individual inorganic light emitting diodes or combinations of multiple objects of the same type in different two- or three-dimensional structures, which are distinguished and identified herein as LED packages and LED arrays. This document will not deal with e.g. LED lamps and luminaires as they are already covered by CIE S 025 or other applications of higher integration levels.

The standard shall describe in particular the geometrical arrangements, the electrical, thermal and temporal operating conditions and the measurement of the values of photometric, colorimetric and spectroradiometric quantities. Moreover, measurement quantities and associated measurement procedures are defined for describing the specific properties of LEDs and to take into account the restricted measurement options available during their manufacture or binning procedure.

The document does not cover semiconductor emitters for coherent optical radiation (lasers), nor limit values for evaluating radiation safety.
The document does not cover measurements of bare LED dice (chip or wafer probing).
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New Publications 

Technical Reports:

CIE 228:2018 Grey-Scale Calculation for Self-Luminous Devices

CIE 229:2018 Groundwork for Measurement of Effective Intensity of Flashing Lights

CIE 198-SP2:2018 Determination of Measurement Uncertainties in Photometry – Supplement 2: Spectral measurements and derivative quantities

Draft International Standard:

DIS 026/E:2018 CIE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light


CIE x045:2018 Proceedings of CIE 2018 ”Topical Conference on Smart Lighting” 26 – 27 April 2018, Taipei, Chinese Taipei

Work in Progress

If you are interested in commenting on any of these items, please contact your National Committeeor National Committee Delegateof the division responsible for the work item.

CIE Draft International Standard in NC ballot:

JTC 9: CIE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light
(Deadline 2018-10-11)

CIE Approval Draft Technical Report in BA and Division voting stage:

TC 1-85: Colorimetry, 4th Edition
(Deadline 2018-09-09)

CIE Enquiry Draft Technical Report that has passed the BA and Division commenting stage, in preparation for the BA and Division voting stage: 

TC 1-81: Validity of Formulae for Predicting Small Colour Differences 

CIE Enquiry Draft Technical Note in BA and Division commenting stage:
DR 2-75: The use of “Accuracy” and related terms in the specifications of testing and measurement equipment (Deadline 2018-09-07)

Should you need more information, then please contact your National Committee Division 2 Delegatefor access to the document.

CIE Enquiry Draft Technical Report that has passed BA and Division commenting stage, in preparation for BA and Division voting stage:

TC 4-15: Road Lighting Calculations, 2nd Edition

Joint project of ISO/TC 274/WG 1 and CIE JTC 6: Final Draft International Standard (ISO/CIE/FDIS 20086) in preparation for NC ballot, to be circulated in September:

JTC 6 (D3/ISO): Energy performance of lighting in buildings

Joint project of ISO/TC 274/WG 3 and CIE JTC 11: Draft Technical Specification (ISO/CIE/DTS 22012) that has passed BA and Division ballot:

JTC 11 (D4/D3/ISO): Light and Lighting – Maintenance Factor Determination – Way of Working

For Your Diary

November 5 - 7, 2018
CIE Tutorial and Practical Workshop on CIE S 025: LED lamps, LED luminaires and LED modules.
VNISI, Mosocow
Registration open

June 14 - 22, 2019
The 29th Quadrennial Session of the CIE, CIE 2019
Washington DC, USA