The fast rate at which solid-state light sources can change their luminous output is one of the main drivers behind the revolution in the lighting industry and applications of lighting. The fast rate of the intensity change means that a modulation of the luminous output, both intended and... more
A colour appearance model provides a viewing-condition-specific method for the transformation of the tristimulus values, X, Y, Z, to or from perceptual attribute correlates.This publication describes a specific colour appearance model, CIECAM16, which may be useful for colour management systems,... more
There are several terms which describe the Planckian radiation temperature for light sources, including radiance temperature, colour temperature, correlated colour temperature, distribution temperature and ratio temperature.
This document provides descriptions of these terms, information on their... more
The purpose of photometry is to measure light as perceived by the human eye. The brightness of a luminous surface depends not only on the amount of radiation it emits, transmits or reflects, but also on its spectral composition and on the visual response function of the observer viewing it.... more