Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2007-01-02
2007-01-02
Koval, Melissa Jan (Department: 2851)
Optics: image projectors
Polarizer or interference filter
C353S031000, C353S034000, C353S037000, C353S052000, C353S081000, C349S009000
Reexamination Certificate
active
10235975
ABSTRACT:
A color separating-combining optical system is configured to separate illumination light into a plurality of color spectrums, guiding these color spectrums to respective image display elements, and combining the color spectrums modulated by the image display elements. The system includes a first polarization separating optical system that reflects the first color spectrum from the separating optical system to a first image display element and transmits the first color spectrum from the first image display element to the combining optical system. Similarly, a second polarization separating optical system is provided that reflects and transmits the second color spectrum. The degree of linear polarization of a reflected color can be maintained higher than that of another, and/or an antireflection element can be included in the path of reflected light.
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Abe Masayuki
Chigira Tatsuo
Okuyama Atsushi
Canon Kabushiki Kaisha
Koval Melissa Jan
Morgan & Finnegan L.L.P.
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