Color determination for LED and LED module uses LED producing mixture of frequencies to produce white light with characteristics determined on standard color chart

摘要

A CIE standard color space may be used. The color produced by the LED (6) is at or close to the white point (5) on the color space. The space may be marked with five Judd lines (1), corresponding to color temperatures of 3000, 4500, 5750, 7000 and 9500 degrees K. The Judd lines are crossed by seven lines of constant color saturation (3) ranging from Deltac = -30 SWE to Deltac = 30 SWE. A line (2) marks the characteristic of a Planck radiator in the CIE standard color space. There is a further line of constant color saturation (3a).