Patent ID: 8049822
Filing Date: 2011-11-01
Classification: G02B,G03B,H04N

Abstract:
1. A projection type video display, comprising: a write light valve for generating image-writing light by modulating write light; a driver for writing images into the write light valve based on image data; read light valves for each color, in which an image is written by the image-writing light emitted from the write light valve, for generating respective color image lights by modulating received color illumination lights; a writing optical system for guiding the image-writing light emitted from the write light valve to the respective read light valves; means for combining together the color image lights emitted from the respective read light valves; and a projection optical system for projecting each of the color image lights combined together, wherein the sizes of the written images on the respective read light valves are different from one another due to the write lights having different peak-wavelengths, with the result that a difference in size between color projected images on a screen is reduced due to the occurrence of a chromatic aberration of magnification in the projection optical system.