Image projector with polarization conversion system

Details Image projector with polarization conversion system Image projector with polarization conversion system

1997-08-01

2000-04-25

Dowling, William

Optics: image projectors

Polarizer or interference filter

349 9, G03B 2114

Patent

active

060536152

ABSTRACT:
An image projector has an optical path including, from upstream to downstream, a light source, a light pipe, a polarization conversion prism, a positive lens group and a light valve. The light pipe has an outlet and an inlet, and is constructed to receive light from the light source and to produce a unique projection display format as light is transmitted therethrough. The polarization conversion prism recycles light to optimize the amount of light that is properly polarized in the system. The positive lens group includes at least one positive lens positioned downstream of the polarization conversion prism. The positive lens group images the outlet of the light pipe onto the light valve.

REFERENCES:
patent: 3170980 (1965-02-01), Pritchard
patent: 5059013 (1991-10-01), Jain
patent: 5303084 (1994-04-01), Pflibsen et al.
patent: 5625738 (1997-04-01), Magarill
patent: 5634704 (1997-06-01), Shikama et al.
patent: 5764412 (1998-06-01), Suzuki et al.
patent: 5777789 (1998-07-01), Chiu et al.
patent: 5795049 (1998-08-01), Gleckman
patent: 5829858 (1998-11-01), Levis et al.

Affiliated with

Also associated with

Rating

Image projector with polarization conversion system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image projector with polarization conversion system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image projector with polarization conversion system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-988154