Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2007-09-18
2007-09-18
Mahoney, Christopher (Department: 2851)
Optics: image projectors
Polarizer or interference filter
C353S031000
Reexamination Certificate
active
11053517
ABSTRACT:
A light modulating unit includes first and second light modulating sections each of which modulates an illumination light on the basis of a video signal to generate a projection light that is a linearly polarized light, a light path synthesizing section which synthesizes the projection lights generated by the first and second light modulating sections using the nature that directions of polarizations of the projection lights cross at right angles, and a beam shifting section which sets beams of the projection lights synthesized by the light path synthesizing section, in a shifted state or a non-shifted state on the basis of the directions of polarizations of the projection lights, the beam shifting section switching the shifted state and the non-shifted state synchronously with modulation timings for the first and second light modulating sections.
REFERENCES:
patent: 6972809 (2005-12-01), Nakanishi
patent: 7021766 (2006-04-01), Uehara
patent: 7-52262 (1995-06-01), None
patent: 10-304284 (1998-11-01), None
patent: 2002-268014 (2002-09-01), None
Kobayashi Hiroyoshi
Kobayashi Susumu
Yamanaka Kazuya
Mahoney Christopher
Olympus Corporation
Volpe & Koenig PC
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