Patent ID: 6870683
Filing Date: 2005-03-22
Classification: G02B

Abstract:
1. An optical illumination system of a projector where the optical illumination system provides light to the projector or magnifying and projecting a picture realized on a small display device, comprising: a light source for emitting and focusing light; an optical device for homogenizing luminous energy and polarized light, wherein the optical device is formed in a shape of a rod and transforms non-polarized incident light into a polarized light as well as homogenizes luminous energy by repeatedly inner total reflecting an incident light; and a space multiplexing optical device for superposing and focusing a light emitted from different emission surfaces of the optical device for homogenizing luminous energy and polarized light on the display device; and wherein the space multiplexing optical device comprises: a Fourier transform optical device, which includes at least two sets of lenses corresponding to respective different lenses of the optical device for homogenizing luminous energy and polarized light, for Fourier transforming an incident light; and a reverse Fourier transform optical device for reverse Fourier transforming a plurality of incident lights from the at least two sets of lenses, and for superposing and focusing the plurality of incident lights on the display device.