Reflection type projector

Details Reflection type projector Reflection type projector

1998-04-21

1999-11-30

Dowling, William

Optics: image projectors

Composite projected image

Plural projection paths with single light source

353 20, 353 81, G03B 2114

Patent

active

059930071

ABSTRACT:
A reflection type projector is disclosed by which efficiency of the use of light can be increased using a birefringent prism. A reflection type projector includes a light source for emitting light, a first and second imaging mechanism for forming an image from the rays emitted from the light source and reflecting the formed image, a projection lens unit for magnifying the image formed by the first and second imaging mechanism and projecting the magnified image onto a screen, first and second prisms, disposed opposite each other along the optical path of the light, for separating an incident light into an ordinary ray and an extraordinary ray and changing a proceeding path of the light such that the ordinary and extraordinary rays have different optical paths, and first and second phase delay plates, disposed along the optical path of the light between the first and second birefringent prisms and the first and second imaging means, for delaying the phase of the incident ray to change property of polarization thereof.

REFERENCES:
patent: 5601351 (1997-02-01), Van Den Brandt
patent: 5626408 (1997-05-01), Heynderickx et al.
patent: 5706063 (1998-01-01), Hong
patent: 5716122 (1998-02-01), Esaki et al.
patent: 5826960 (1998-10-01), Gotoh et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1663520