Projection apparatus

Details Projection apparatus Projection apparatus

1997-09-17

1999-04-06

Dowling, William

Optics: image projectors

Polarizer or interference filter

353 69, G03B 2114

Patent

active

058907866

ABSTRACT:
The present invention relates to a projection apparatus in which a beam of light from light source means is separated into beams of two polarized components by a polarization separator, and the direction of polarization of one of the separated beams of two polarized components is caused to coincide with the direction of polarization of the other beam of light through polarizing rotatable means, whereafter the two beams of light are condensed by a condenser of which the refractive power differs between two directions orthogonal to each other, a projected image is irradiated with the beam of light passed through the condenser and the projected image is projected onto a predetermined surface by a projector.

REFERENCES:
patent: 4913529 (1990-04-01), Goldenberg et al.
patent: 5231431 (1993-07-01), Yano et al.
patent: 5272496 (1993-12-01), Nicolas et al.
patent: 5278680 (1994-01-01), Karasawa et al.
patent: 5381278 (1995-01-01), Shingaki et al.
patent: 5387953 (1995-02-01), Minoura et al.
patent: 5387991 (1995-02-01), Mitsutake et al.
patent: 5418583 (1995-05-01), Masomoto
patent: 5446510 (1995-08-01), Mitsutake et al.
patent: 5452128 (1995-09-01), Kimura et al.
patent: 5461500 (1995-10-01), Tsuji et al.
patent: 5467207 (1995-11-01), Forkner et al.

Affiliated with

Also associated with

Rating

Projection 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 Projection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1364473