Patent ID: 7278743
Filing Date: 2007-10-09
Classification: G02B,H04N

Abstract:
1. An illumination system comprising: a color separation unit homogenizing a non-polarized white light originated from a light source, converting the homogenized light to a polarized light in a specific direction, and splitting the polarized light into R, G and B lights by color scrolling; an illumination lens array condensing an incident light; a first phase plate arranged between the color separation unit and the illumination lens array to convert a polarized mode of the incident light; a second phase plate converting the polarized mode of the incident light; and a linear polarizer transmitting a linearly polarized light of the incident light in the specific direction, wherein the first phase plate is a λ/4 plate converting the linearly polarized light of the incident light to a circularly polarized light or the circularly polarized light of the incident light to the linearly polarized light, and wherein the second phase plate and the linear polarizer are sequentially arranged between the illumination lens array and a display panel to eliminate a reflective light on an internal optical surface of the illumination system.