Projection optical system and image display apparatus

Details Projection optical system and image display apparatus Projection optical system and image display apparatus

2011-03-22

2011-03-22

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

With field curvature shaping

C359S727000, C353S098000

Reexamination Certificate

active

07911704

ABSTRACT:
A disclosed projection optical system for projecting and forming an enlarged image of an image displayed in a planar manner as an object includes: a lens system including, from an object side, at least a lens group providing telecentricity to an object space side, a lens group controlling divergence of angles of view, a diaphragm, a lens group converging the angles of view, and a lens group converging and subsequently enlarging the angles of view; and a catoptric system disposed on an image side relative to the lens system and including a mirror having negative power. Each lens group of the lens system and the mirror having negative power share an optical axis and the optical axis is shifted relative to a center of an object surface.

REFERENCES:
patent: 5764407 (1998-06-01), Nanba
patent: 7048388 (2006-05-01), Takaura et al.
patent: 7239452 (2007-07-01), Kuwa
patent: 7529032 (2009-05-01), Takaura et al.
patent: 2006/0126032 (2006-06-01), Takaura et al.
patent: 2001-264634 (2001-09-01), None
patent: 2003-161885 (2003-06-01), None
patent: 2004-133483 (2004-04-01), None
patent: 2004-258620 (2004-09-01), None
patent: 2005-292813 (2005-10-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2774229