Projection-type image display apparatus

Details Projection-type image display apparatus Projection-type image display apparatus

2011-08-23

2011-08-23

Pyo, Kevin (Department: 2878)

Optics: image projectors

Distortion compensation

For projection axis inclined to screen

C353S098000, C353S101000, C359S649000, C359S813000, C359S823000

Reexamination Certificate

active

08002417

ABSTRACT:
A projection-type image display apparatus for projecting an image, enlargedly, onto a projection surface, comprises: an image display element; a lens group, being disposed behind the image display element, comprising therein, a front lens group made up with a plural number of lenses, including, at least, a refractive lens, and a rear lens group made up with a plural number of lenses, including, at least, a lens having a free curved surface configuration and being rotationally asymmetric, thereby emitting an image displayed on the image display element; a reflection mirror for reflecting the light from the lens group, thereby projection onto the projection surface, obliquely; and a movement member for moving the plural number of lenses of the rear lens group.

REFERENCES:
patent: 5648871 (1997-07-01), Okuyama et al.
patent: 6220712 (2001-04-01), Ohzawa
patent: 6450648 (2002-09-01), Ohzawa et al.
patent: 7670007 (2010-03-01), Hisada et al.
patent: 7766487 (2010-08-01), Hisada et al.
patent: 2006/0114430 (2006-06-01), Masubuchi et al.
patent: 2006/0164605 (2006-07-01), Kuwa
patent: 2006/0227299 (2006-10-01), Hisada et al.
patent: 2006/0227432 (2006-10-01), Yoshikawa et al.
patent: 05-134213 (1993-05-01), None
patent: 2000-162544 (2000-06-01), None
patent: 2004-157560 (2004-06-01), None
patent: 2004-258218 (2004-09-01), None
patent: 2006-138882 (2006-06-01), None
patent: 2006-154041 (2006-06-01), None
patent: 2006-292900 (2006-10-01), None
patent: 2006-292901 (2006-10-01), None

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