Projection-type display apparatus

Details Projection-type display apparatus Projection-type display apparatus

2006-06-27

2006-06-27

Dowling, William C. (Department: 2851)

Optics: image projectors

Reflector

Plural

C349S005000

Reexamination Certificate

active

07066609

ABSTRACT:
In a projection-type display apparatus that directs light from a light source through the illumination optical system to a display panel so that an image displayed on the display panel illuminated by the light directed thereto is projected through a projection optical system onto a screen, an illumination optical system is used that has a light intensity uniformizing device of which the entrance surface is located at a first conjugate position substantially conjugate with the light source and of which the exit surface has a shape geometrically similar to the panel surface of the display panel and a reflection optical system for forming an image of the exit surface of the light intensity uniformizing device on the panel surface of the display panel. In the reflection optical system, every surface having an optical power is a reflective surface.

REFERENCES:
patent: 6129437 (2000-10-01), Koga et al.
patent: 6322219 (2001-11-01), Okamori et al.
patent: 6499852 (2002-12-01), Kino et al.
patent: 6609798 (2003-08-01), Milinusic et al.
patent: 6626541 (2003-09-01), Sunaga
patent: 6626542 (2003-09-01), Baba et al.
patent: 2002/0191161 (2002-12-01), Baba et al.
patent: 2004/0109146 (2004-06-01), Liao et al.
patent: 2004/0169829 (2004-09-01), Kwon
patent: 2004/0184012 (2004-09-01), Hori

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3672123