Optical apparatus for liquid crystal display projector

Details Optical apparatus for liquid crystal display projector Optical apparatus for liquid crystal display projector

1995-11-21

1998-06-30

Dowling, William

Optics: image projectors

Polarizer or interference filter

353 99, 353 34, 353 98, 349 9, G03B 2128

Patent

active

057722994

ABSTRACT:
An improved optical apparatus for an LCD projector capable of more effectively focussing a light on an LCD panel of a high vision or a wide vision, and achieving a desired wave length and a better contrast of a picture, which includes a second polarizing unit for separating a green component from the visible ray transmitted from the white light source, for polarizing the green component into a P-wave component light, and for evenly transmitting on an LCD panel having a 16:9 format display ratio by correcting a brightness non-uniformity of the P-wave component light; a third polarizing unit for separating a blue component from the visible ray transmitted from the white light source, for polarizing the blue component into a P-wave component light, and for evenly transmitting on an LCD panel having a 16:9 format display ratio by correcting a brightness non-uniformity of the P-wave component light; a color mixer for the red, green, and blue components which are obtained by the first through third polarizing units; and a projection lens for projecting the thusly mixed color rays on a screen.

REFERENCES:
patent: 5042921 (1991-08-01), Sato et al.
patent: 5142387 (1992-08-01), Shikama et al.
patent: 5217299 (1993-06-01), Yoshida et al.
patent: 5283600 (1994-02-01), Imai
patent: 5461500 (1995-10-01), Tsuji et al.
patent: 5512967 (1996-04-01), Bohannon
patent: 5555186 (1996-09-01), Shioya
patent: 5575548 (1996-11-01), Lee
patent: 5613768 (1997-03-01), Kim
patent: 5673986 (1997-10-01), Koo

Affiliated with

Also associated with

Rating

Optical apparatus for liquid crystal display projector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical apparatus for liquid crystal display projector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical apparatus for liquid crystal display projector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1852211