Projector with illuminating light collecting unit

Details Projector with illuminating light collecting unit Projector with illuminating light collecting unit

1998-02-19

1999-11-09

Dowling, William C.

Optics: image projectors

Miscellaneous

353102, 362 32, G03B 2114

Patent

active

059800461

ABSTRACT:
A liquid crystal projector with an illuminating light collecting unit which can efficiently collect illuminating light emitted from a lamp of the projector to a scrambler. The projector with an illuminating light collecting unit, includes: a lamp for emitting illuminating light; a reflector for reflecting the illuminating light; a rod-shaped scrambler for guiding the reflected illuminating light to pass therethrough; an illuminating light collecting unit for collecting and diffusing the reflected illuminating light in order to prevent the fluctuation of the illuminating light which may occur at a region between the scrambler and the lamp; and a projection lens for projecting the illuminating light which has passed through the scrambler.

REFERENCES:
patent: 5059013 (1991-10-01), Jain
patent: 5303084 (1994-04-01), Pfibsen et al.
patent: 5594561 (1997-01-01), Blanchard
patent: 5625738 (1997-04-01), Magarill
patent: 5634704 (1997-06-01), Shikama et al.
patent: 5795049 (1998-08-01), Gleckman

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