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CIE 170-1:2006

Fundamental chromaticity diagram with physiological axes - Part 1
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CIE established, in 1991, the Technical Committee TC 1-36 with the following Terms of Reference: Establish a fundamental chromaticity diagram of which the co-ordinates correspond to physiologically significant axes .-\n--\n-Part I of the report is limited to the choice of a set of colour matching functions and estimates of cone fundamentals for the normal observer, ranging in viewing angle from 1� to 10�.-\n--\n-The report starts with the choice of the 10� Colour Matching Functions (CMFs) of Stiles and Burch (1959). Then, following the ideas put forward by Stockman and Sharpe (2000), by application of K�nig's hypothesis, and using the most modern data on the spectral sensitivity functions of dichromats, it is followed by the derivation of the spectral sensitivity functions of the long-wave sensitive (L-), medium-wave sensitive (M-) and short-wave sensitive (S-) cones, measured in the corneal plane for a 10� viewing field, the so called cone fundamentals .-\n--\n-Next, by correcting these functions for the absorption of the ocular media and the macular pigment, and taking into account the optical densities of the cone visual pigments, all for a 10� viewing field, the low density absorbance functions of these pigments were derived.-\n-Using these low density absorbance functions one can derive, taking the absorption of the ocular media and the macula, and taking into account the densities of the visual pigments for a 2� viewing field, the 2� cone fundamentals.-\n--\n-Using the same procedure one can derive cone fundamentals for every viewing angle between 1� and 10�.-\n-Effects of age can also be incorporated by application of the relationship of the absorption of the lens as a function of age.-\n-Tables are given, with intervals of 5 nm, of-\n--\n- 10� cone fundamentals, both in terms of energy and quanta;-\n- optical density of the macular pigment;-\n- optical density of lens and other ocular media;-\n- the photopigment low density absorbance spectra;-\n- 2� cone fundamentals, both in terms of energy and quanta;-\n- maximal optical density of the macular pigment as a function of field size;-\n- the optical density of lens and other ocular media as a function of age;-\n- the maximal values of the optical density of the visual pigments as a function of field size. Keywords: cone fundamentals, colour perception, physiological optics, visual performance
SDO CIE: International Commission on Illumination
Document Number 170-1
Publication Date Jan. 1, 2006
Language en - English
Page Count 56
Revision Level
Supercedes
Committee
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