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CIE 165:2005 CIE 10 Degree Photopic Photometric Observer
Commission Internationale de L'Eclairage / 01-Jan-2005 / 23 pages |
| Format | Language | Price | Avaliablity |
|---|---|---|---|
| Secure PDF | English (1 file, 910 KB) |
€ 66.00 EUR | Immediate Download |
| Printed Edition | English | € 66.00 EUR | Ships In 24-48 hrs |
Description
The V(Λ) function accepted in 1924 is valid for photopic vision. It was long recognized that for para-foveal vision this function does not describe luminance perception correctly. In 1964 the CIE accepted a large field colorimetric observer, but this system had no photometric counterpart. Subsequent research has shown that y10(Λ) function can be used as the spectral luminous efficiency function of a 10° photometric observer. The present report provides guidance when and how this large field photometric observer could be used, especially if luminance has to be determined para-foveally.
Based on the detailed evaluation of the available literature data TC 1-59 came to the conclusion that the adoption of a 10° photopic photometric observer [V10(Λ)] can be recommended to the CIE and that this system should be based - according to the original recommendations of the CIE Colorimetric Committee - on the y10(Λ) function of the CIE 1964 standard colorimetric observer.
The report is written in English, with a short summary in French and German. It consists of 23 pages with 3 tables.