Projector

Details Projector Projector

2007-11-20

2007-11-20

Sever, Andrew T (Department: 2851)

Optics: image projectors

Housing

C348S794000, C349S058000

Reexamination Certificate

active

09912070

ABSTRACT:
To provide a projector reduced in size and weight and countermeasures against EMI (Electro-Magnetic Interference) as well. The projector has vertically separable outer cases which accommodate an optical system comprising: a color beam splitting optical system for splitting light from a light source into beams of predetermined colors; an electro-optical device for modulating the color beams split by the color beam splitting optical system in accordance with image information; a color beam combining optical system for combining the color beams modulated by the electro-optical devices; and a projection lens for projecting the resultant beam combined by the color beam combining optical system. These optical components constituting the optical system are attached to a inner case, and the inner case is fixed to a lower case so as to accommodate at least the color beam splitting optical system in a enclosure constituted by the inner case and the lower case.

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Office Action against corresponding Japanese Patent Application No. 2000-221705 with English translation, Aug. 2006.
Patent Abstract of Japanese Patent Application No. 11-046077, Feb. 1999.
Patent Abstract of Japanese Patent Application No. 10-288812, Oct. 1998.
Patent Abstract of Japanese Patent Application No. 2000-066305, Mar. 2000.
Patent Abstract of Japanese Patent Application No. 07-311372, Nov. 1995.
Patent Abstract of Japanese Patent Application No. 2000-029141, Jan. 2000.
Patent Abstract of Japanese Patent Application No. 06-222322, Aug. 1994.
Utility model abstract of Japanese Patent Application No. 06-028836, Apr. 1994.

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