Projector

Details Projector Projector

2005-03-29

2005-03-29

Nguyen, Judy (Department: 2851)

Optics: image projectors

Lens support

Lens position adjustable

C353S031000, C353S100000, C353S069000

Reexamination Certificate

active

06871963

ABSTRACT:
The invention makes it easier to perform adjustments for bringing into conformity an illuminating area of an illuminating color light beam. A projector in accordance with the invention includes an illumination optical system; a color light separation optical system that separates illumination light into illumination light beams of a plurality of colors; a plurality of electro-optical devices that convert the illumination light beams of a plurality of colors into light beams of a plurality of colors; a color light synthesizing optical system that synthesizes the converted light beams of a plurality of colors that exit from the plurality of electro-optical devices; a projection optical system that projects the color image that is represented by the synthesized light beam; and a relay optical system that is provided in a path of at least one color illumination light beam. The relay optical system includes an adjusting device that adjusts the location of at least one of a plurality of lenses of the relay optical system in an optical axis direction.

REFERENCES:
patent: 4943154 (1990-07-01), Miyatake et al.
patent: 5649753 (1997-07-01), Masumoto
patent: 5860721 (1999-01-01), Bowron et al.
patent: 5865521 (1999-02-01), Hashizume et al.
patent: 5978136 (1999-11-01), Ogawa et al.
patent: 5986809 (1999-11-01), Itoh et al.
patent: 6092901 (2000-07-01), Hashizume et al.
patent: 6183094 (2001-02-01), Ohta
patent: U 07-005119 (1995-01-01), None
patent: 2000-121997 (2000-04-01), None
Hecht, Eugene, Optics, 1998, Addison Wesley Longman, 3rd edition, p. 392.

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