Patent ID: 7170567
Filing Date: 2007-01-30
Classification: G02B,H04N

Abstract:
1. A projection type image display apparatus, comprising: a light source to emit light: a polarizing beam splitter to polarize the light received from the light source; a first lens array including a plurality of first lens cells having rectangular shapes to receive the light from the polarizing beam splitter, each first lens cell having a first side and a second side, the first side being longer than the second side, the first lens array having a rectangular shape, the first lens array having a third side and a fourth side, the third side being longer than the fourth side, the first sides of the first lens cells and the third side of the first lens array extending along a first direction; a second lens array including a plurality of second lens cells having rectangular shapes and being configured to receive the light from the first lens array, the second lens array having a rectangular shape and having a fifth side and a sixth side, the fifth and sixth sides of the second lens array having substantially the same dimensions as the third and fourth sides of the first lens array, each of the second lens cells having a seventh side and an eighth side that is longer than the seventh side, the eighth sides of the second lens cells and the fifth side of the second lens array extending along a second direction that is different from the first direction; a color separator configured to separate the light from the second lens array into a plurality of light rays of different colors; an image display device configured to form an optical image from the plurality of light rays; a projector configured to project the plurality of light rays emitted from the image display device as a color image; and a rotary polyhedron configured to receive the plurality of light rays from the color separator and direct the plurality of light rays onto the image display device, the directed plurality of light rays having optical axes in different directions.