Report on CIE Division 2 CIE Session 2007 Beijing

Contents

• Introduction – Division 2 • Presented Papers • Technical Committee Meetings

Introduction – Division 2

What does Division 2 cover?

• Measurement of Light and Radiation • UV, Visible and Infrared radiation • Optical properties of materials and luminaires • Optical properties and performance of physical detectors

Who is Division 2?

• • •

Outgoing Director:

Teresa Goodman (UK)

Incoming Director:

Yoshi Ohno (USA)

Editor and Australian Representative:

Jim Gardner

Presented Papers

Presented Papers

• Papers presented at the conference include: – Absolute Integrating Sphere Photometry; – CCD-based Near-field Goniophotometry; – Characterisation of Integrating Spheres for accurate LED measurement;

Presented Papers

• Papers presented at the conference include: – Luminance contrast measurement of FPDs under daylight ambient condition; – Correction of stray light in CCD-based spectroradiometers and imaging devices; – Measurement of “naturalness”.

Technical Committee Meetings

TC2-40

•

Standard for Characterizing the Performance of Illuminance Meters and Luminance Meters

• New standard to give clear and unambiguous definitions for individual quality indices • Discussion surrounding characterisation of: – V (  ) mis-match index f 1 ’.

• A new definition is likely to include uncertainty.

– Directional response index f 2 .

• Discussion regarding to measure out to 80 ° or 85 ° • The new definition will likely average the cosine response over four half-planes

TC2-49

•

Photometry of Flashing Lights

• New technical report for photometric measurements of flashing light, including measurement of light sources, and calibration of photometers for flashing light.

• New definition for derivation of “effective intensity” to replace the old B-R-D, Allard and Schmidt-Clausen.

TC2-51

•

Calibration, Characterization and Use of Array Spectroradiometers

• Mainly for spectroradiometers that use CCD arrays for real-time spectral measurement • Looking at properties of these devices, how to characterise and calibrate, and also sources of uncertainty • Subsequent meeting with TC chair in Melbourne

TC2-59

•

Characterisation of Imaging Luminance Measurement Devices (ILMDS)

• Mainly for the devices that use CCD cameras to perform luminance measurements • Looking at properties how to characterise and calibrate, etc.

– Scattered light, Linearity, Spectral Response, Uniformity, etc.

– Binning, Blooming, Smear

TC2-47

•

Characterisation and Calibration Methods of UV Radiometers

• Currently no uniform method of calibration that produces universally consistent results, ie: lamp and detector-dependant.

• New guide will recommend methods for characterisation of UVA, UVB and UVC radiometers with quality indices similar to luxmeters.

Thank you for your kind attention

Tony Bergen Technical Director Photometric Solutions International

Factory 2, 21-29 Railway Avenue Huntingdale, Vic, 3166, Australia Tel: +61 3 9568 1879 Fax: +61 3 9568 4667 Email: [email protected]

Web: www.photometricsolutions.com