Optical system and rear projector

Details Optical system and rear projector Optical system and rear projector

2005-12-09

2008-11-11

Mahoney, Christopher (Department: 2862)

Optics: image projectors

Reflector

C353S102000

Reexamination Certificate

active

07448760

ABSTRACT:
An optical system that projects projection light from an image generating device, onto a screen is provided. The optical system comprises: a lens system on which the projection light from the image generating device is incident; and an aspherical mirror with negative power as a whole that is disposed on an optical path between the lens system and the screen, wherein a curvature of the aspherical mirror in the radial direction changes positive to negative on a way from a center to a periphery thereof.

REFERENCES:
patent: 5274406 (1993-12-01), Tejima et al.
patent: 6631994 (2003-10-01), Suzuki et al.
patent: 2001-264627 (2001-09-01), None
patent: 2001-264632 (2001-09-01), None
patent: WO/02/027399 (2002-04-01), None

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