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CIE 165:2005

CIE 165:2005

$21.45

CIE 10 Degree Photopic Photometric Observer

Published By Publication Date Number of Pages
CIE 2005-01-01 26
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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.

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.

The report is written in English, with a short summary in French and German. It consists of 23 pages with 3 tables.

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CIE 165:2005
$21.45