Patent ID: 6307601
Filing Date: 2001-10-23
Classification: G02B,H04N

Abstract:
A projection type liquid crystal display device comprising:a light source;illumination optics having a function of irradiating a plane to be irradiated with light emitted by said light source;liquid crystal display elements modulating light; andprojection optics for projecting light exiting from said liquid crystal display elements;wherein said illumination optics include at least an elliptic mirror and a spherical mirror, and said illumination optics include further a first lens array and a second lens array, in which a plurality of lenses are arranged perpendicularly to an optical axis, from the light source side; and a condenser lens for irradiating said liquid crystal display elements with light after exit from said second lens array with a high efficiency, and wherein said lenses constituting said first lens array disposed on the light source side in said illumination optics are rectangular and at least one lens thereof has an optical axis, which is not at the center of a rectangular shape.