Reflecting type color image projecting apparatus

Details Reflecting type color image projecting apparatus Reflecting type color image projecting apparatus

1995-10-26

1996-11-26

Dowling, William

Optics: image projectors

Composite projected image

Multicolor picture

353 34, 359 48, 359 72, G03B 2128

Patent

active

055778267

ABSTRACT:
To effectively utilize a luminous flux from a light source thereby realizing a reflecting type color image projecting apparatus having a high brightness. The apparatus includes three sheets of reflecting type optical writing liquid crystal light valves, means for writing images of respective color components to the respective reflecting type optical writing liquid crystal light valves, a polarized beam splitter for splitting a light source luminous flux into polarized light illuminating luminous fluxes, means for separating only a green component of one of the polarized light illuminating luminous fluxes, means for separating the other one of the polarized light illuminating luminous fluxes into a red component and a blue component and a projecting lens. A back focus from the projecting lens to the reflecting type optical writing liquid crystal light valves can be shortened and utilization efficiency of a luminous flux from a light emitting source can more be enhanced than a conventional reflecting type color image projecting apparatus.

REFERENCES:
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4826311 (1989-05-01), Ledebohr
patent: 5124545 (1992-06-01), Takanashi et al.
patent: 5130826 (1992-07-01), Takanashi et al.
patent: 5260815 (1993-11-01), Takizawa
patent: 5321448 (1994-06-01), Ogawa
patent: 5374968 (1994-12-01), Haven et al.
patent: 5379135 (1995-01-01), Nakagaki et al.
patent: 5389982 (1995-02-01), Lee

Affiliated with

Also associated with

Rating

Reflecting type color image projecting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reflecting type color image projecting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reflecting type color image projecting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1967895