Patent ID: 7212359
Filing Date: 2007-05-01
Classification: G02B,H04N

Abstract:
1. An illumination system for use in a display system, comprising: a light source producing light; a color wheel, further comprising: a set of primary color segments producing primary colors of red, green, and blue; and a color rendering segment, wherein the color rendering segment has a color that is determined based upon a product function that is proportional to a product of the luminance sensitivity of a viewer's eyes, a spectrum of the light from the light source and a predetermined wavelength threshold of the product function; and wherein the color rendering segment has a color whose chromaticity lies within a triangle zone in the CIE 1931 chromaticity chart, the triangle zone having a set of corner points defined by the red, green, and blue primary colors but outside a white zone having corners with coordinates (0.355, 0.355); (0.305, 0.305); (0.285, 0.325); and (0.335, 0.375); in the CIE 1931 chromaticity chart.