Projector

Details Projector Projector

2007-06-26

2007-06-26

Dowling, William C. (Department: 2851)

Optics: image projectors

Unitary plural refracting surfaces

C353S020000, C353S031000, C349S005000, C349S061000

Reissue Patent

active

10014937

ABSTRACT:
An output light fromdelete-start id="DEL-S-00001" date="20070626" ?andelete-end id="DEL-S-00001" ?insert-start id="INS-S-00001" date="20070626" ?ainsert-end id="INS-S-00001" ?light source lamp unit8in adelete-start id="DEL-S-00002" date="20070626" ?projection-type display apparatusdelete-end id="DEL-S-00002" ?insert-start id="INS-S-00002" date="20070626" ?projectorinsert-end id="INS-S-00002" ?illuminates liquid-crystal light valves925R,925G and925B for three colors via an integrator optical system923.A superimposing lens930that is a component of the integrator optical system923as a uniform illumination optical system is arranged such that the mounting position of the superimposing lens930is fine-adjustable in a direction orthogonal to an optical axis1a. By fine-adjusting the mounting position of the superimposing lens930,the position of an illumination area B is adjusted such that the illumination area includes the image forming area A of the liquid-crystal light valve. It is not necessary to assure a wide margin around the image forming area A to cover the offset of the position of the illumination area B. As a result, the utilization of illumination light is heightened and a bright projected image results.

REFERENCES:
patent: 4645319 (1987-02-01), Fekete
patent: 5098184 (1992-03-01), Van Den Brandt et al.
patent: 5153752 (1992-10-01), Kurematsu et al.
patent: 5179398 (1993-01-01), Iizuka
patent: 5278680 (1994-01-01), Karasawa et al.
patent: 5418583 (1995-05-01), Masumoto
patent: 5418586 (1995-05-01), Fujimori et al.
patent: 5626409 (1997-05-01), Nakayama et al.
patent: 5649753 (1997-07-01), Masumoto
patent: 5662401 (1997-09-01), Shimizu et al.
patent: 5755503 (1998-05-01), Chen et al.
patent: 5786939 (1998-07-01), Watanabe
patent: 0 526 653 (1993-02-01), None
patent: 0 646 828 (1995-04-01), None
patent: 0 803 754 (1997-10-01), None
patent: U-62-121503 (1987-08-01), None
patent: A-63-123019 (1988-05-01), None
patent: A-2-118661 (1990-05-01), None
patent: 3-111806 (1991-05-01), None
patent: A-4-30140 (1992-02-01), None
patent: A-4-127120 (1992-04-01), None
patent: U 5-15035 (1993-02-01), None
patent: A-5-72455 (1993-03-01), None
patent: A 5-107505 (1993-04-01), None
patent: U 5-45702 (1993-06-01), None
patent: A-5-196892 (1993-08-01), None
patent: A 5-346557 (1993-12-01), None
patent: A-6-202063 (1994-07-01), None
patent: A-6-202094 (1994-07-01), None
patent: A-7-120753 (1995-05-01), None
patent: A-7-174974 (1995-07-01), None
patent: A 7-181392 (1995-07-01), None
patent: A-7-244282 (1995-09-01), None
patent: A 7-287205 (1995-10-01), None
patent: WO 94/22042 (1994-09-01), None

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