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CIE 165:2005

CIE 10 degree photopic photometric observer
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CIE 165:2005

CIE 10 degree photopic photometric observer

PUBLISH DATE 2005
PAGES 23
CIE 165:2005
The V(?) 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(?) 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.-\n--\n-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(?)] 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(?) function of the CIE 1964 standard colorimetric observer.-\n--\n-The report is written in English, with a short summary in French and German. It consists of 23 pages with 3 tables. Keywords: colour matching functions, photometric observer, photometry, standard observer
SDO CIE: International Commission on Illumination
Document Number 165
Publication Date Jan. 1, 2005
Language en - English
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