Projector

Optics: image projectors – Polarizer or interference filter

Reexamination Certificate

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Details

C353S038000, C359S622000, C359S506000

Reexamination Certificate

active

07828443

ABSTRACT:
A projector includes an integrator illumination optical system. The integrator illumination optical system includes: a first lens array having a plurality of first small lenses, a second lens having a plurality of second small lenses, and a polarization converter including: polarization separating layers. The second small lenses of the second lens array are each arranged with its convex surface oriented to the light-irradiation side. A light shield section is provided on a portion on an incident-side surface of the polarization converter, the portion excluding a light-incident surface corresponding to the polarization separating layers. An extending portion is formed on one of the second lens array and the polarization converter in a manner extending toward the other one of the second lens array and the polarization converter, the second lens array and the polarization converter bonded and fixed to each other by bonding and fixing the extending portion to the other one.

REFERENCES:
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patent: 6631039 (2003-10-01), Fujimori et al.
patent: 6857745 (2005-02-01), Kitabayashi et al.
patent: 6866387 (2005-03-01), Ogawa
patent: 2004/0165151 (2004-08-01), Kitabayashi et al.
patent: 2004/0263697 (2004-12-01), Fuse et al.
patent: 2005/0094937 (2005-05-01), Sato et al.
patent: A 11-242186 (1999-09-01), None
patent: A-2000-056198 (2000-02-01), None
patent: A-2002-062587 (2002-02-01), None
patent: A-2003-075701 (2003-03-01), None
patent: A-2005-138334 (2005-06-01), None
patent: A-2005-141091 (2005-06-01), None

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