Illumination system using polarization conversion

Details Illumination system using polarization conversion Illumination system using polarization conversion

2008-06-17

2008-06-17

Blackman, Rochelle-Ann (Department: 2862)

Optics: image projectors

Polarizer or interference filter

C353S037000, C353S097000, C353S099000, C353S102000, C359S490020, C385S011000, C385S133000, C385S901000, C362S019000, C362S551000

Reexamination Certificate

active

07387388

ABSTRACT:
An apparatus and method is discloses for providing a substantially uniform, homogenous, polarized light. A beam of substantially un-polarized light is provided by a conventional light source. The un-polarized light is converted to at least four real images by using a light pipe and appropriate lensing. Each of the real images have a light region and one more dark regions at a first image plane. A portion of light from a light region in each real image is directed to one or more dark regions in each of the real images in a polarization dependent manner and the altered image is into a single image of substantially polarized light.

REFERENCES:
patent: 4045133 (1977-08-01), Carlson
patent: 6139157 (2000-10-01), Okuyuma
patent: 6343862 (2002-02-01), Sawai et al.
patent: 2003/0214617 (2003-11-01), Bierhuizen et al.
patent: 2004/0169774 (2004-09-01), Hibi et al.
patent: 2005/0052873 (2005-03-01), Sokolov
patent: WO 01/81960 (2001-11-01), None
patent: WO 02/063390 (2002-08-01), None

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2807907