Projection device and liquid crystal panel unit for use in...

Details Projection device and liquid crystal panel unit for use in... Projection device and liquid crystal panel unit for use in...

2006-08-29

2006-08-29

Perkey, W. B. (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S119000, C349S009000, C349S075000, C349S096000, C349S119000, C359S249000, C359S490020, C348S751000, C348S761000

Reexamination Certificate

active

07097306

ABSTRACT:
A projection device includes on a chassis a liquid crystal panel for irradiation with light from a light source, a polarizing plate opposing the liquid crystal panel, and an optical compensation sheet provided between the liquid crystal panel and the polarizing plate, for compensating a twist angle of polarized light. The optical compensation sheet is attached to a rotational adjusting mechanism provided on the chassis so that it can be rotatively adjusted within a plane perpendicular to an optical axis L.

REFERENCES:
patent: 6243065 (2001-06-01), Robrish et al.
patent: 6301044 (2001-10-01), Huber et al.
patent: 6473180 (2002-10-01), Hirosawa
patent: 2002/0018162 (2002-02-01), Suzuki et al.
patent: 2000-39591 (2000-02-01), None

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