Search results
Results from the WOW.Com Content Network
CIE (2007) "reviews the applicability of the CIE color rendering index to white LED light sources based on the results of visual experiments". Chaired by Davis, CIE TC 1-69(C) is currently investigating "new methods for assessing the color rendition properties of white-light sources used for illumination, including solid-state light sources ...
Color temperature is a parameter describing the color of a visible light source by comparing it to the color of light emitted by an ... The CIE color rendering index ...
The color rendering index (CRI) of 1974 is the product of a CIE committee's study on the topic of color rendering. It uses the American colorimetric approach with a panel of human subjects instead of requiring spectrophotometry. Eight samples of varying hue would be alternately lit with two illuminants, and the color appearance compared.
The CIE chromaticity coordinates are given for both the 2 degree field of view (1931) and the 10 degree field of view (1964). [30] The color swatches represent the color of each white point, automatically calculated by Wikipedia using the Color temperature template.
CRI is calculated from the differences in the chromaticities of eight CIE standard color samples (CIE 1995) when illuminated by a light source and by a reference illuminant of the same correlated color temperature (CCT), commonly measured in kelvins, indicating the light color produced by a radiating black body at a certain temperature; the smaller the average difference in chromaticities, the ...
The CIE recommends that "The concept of correlated color temperature should not be used if the chromaticity of the test source differs more than Δ uv = 5×10 −2 from the Planckian radiator." [ 22 ] Beyond a certain value of Δ uv , a chromaticity co-ordinate may be equidistant to two points on the locus, causing ambiguity in the CCT.
The best-known measure of metamerism is the color rendering index (CRI), which is a linear function of the mean Euclidean distance between the test and reference spectral reflectance vectors in the CIE 1964 color space.
The CIE chromaticity coordinates are given for both the 2 degree field of view (1931) and the 10 degree field of view (1964). [1] The color swatches represent the color of each white point, automatically calculated by Wikipedia using the Color temperature template.