Illumination optical system, image display optical system,...

Details Illumination optical system, image display optical system,... Illumination optical system, image display optical system,...

2005-03-08

2005-03-08

Husar, Stephen (Department: 2875)

Illumination

Light source and modifier

Plural serial lens elements or components

C362S293000, C362S030000, C362S301000, C362S299000, C362S275000, C362S328000, C362S331000

Reexamination Certificate

active

06863419

ABSTRACT:
An illumination optical system that illuminates a plurality of image display elements comprises; a color separating optical system that separates light emitted from a light source into a plurality of color light components; and a plurality of light-guiding optical systems, each of which guides light component to a corresponding one of the plurality of image display elements. An illumination area on the image display element that is illuminated by at least one of the plurality of light-guiding optical systems is larger than those on the image display elements illuminated by the other ones of the plurality of light-guiding optical systems. This provides a compact projection type image display apparatus which can project bright images.

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patent: 5934778 (1999-08-01), Shioya
patent: 6231193 (2001-05-01), Sugawara
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patent: 20030025883 (2003-02-01), Yajima
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patent: 2000-098488 (2000-04-01), None
patent: 2000-137204 (2000-05-01), None
patent: 2000-241882 (2000-09-01), None
patent: 2002-296538 (2002-10-01), None
English Abstract for Japanese Patent Application Publication No. 10-241437.
English Abstract for Japanese Patent Application Publication No. 2000-137204.

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