Optics: image projectors – Composite projected image
Reexamination Certificate
2007-05-08
2007-05-08
Dowling, William (Department: 2851)
Optics: image projectors
Composite projected image
C353S084000, C359S618000, C359S558000
Reexamination Certificate
active
11157484
ABSTRACT:
A color display device is disclosed. The color display device includes an illumination lens system, a diffractive light modulation system, a combining system, a Fourier filter system, and a projection system. The illumination lens system converts a plurality of light beams into linear parallel light beams. The diffractive light modulation system produces a plurality of diffracted light beams having a plurality of diffraction orders by modulating each of the plurality of parallel light beams that are almost perpendicularly incident from the illumination lens system, The combining system focuses the plurality of diffracted light beams having the plurality of diffraction orders. The Fourier filter system selects diffracted light beams having desired diffraction orders using a dichroic filter. The projection system focuses the diffracted light beams on an object, and allowing the focused diffracted light beams to scan the object.
REFERENCES:
patent: 5374947 (1994-12-01), Takahashi et al.
An Jun Won
Oh Kwan Young
Shin Dong Ho
Yang Haeng Seok
Yun Sang Kyeong
Christensen O'Connor Johnson & Kindness PLLC
Dowling William
Kong Andrew
Samsung Electro-Mechanics Co. Ltd.
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