Optical: systems and elements – Projection screen
Reexamination Certificate
2007-03-06
2008-12-02
Mahoney, Christopher (Department: 2862)
Optical: systems and elements
Projection screen
C359S460000
Reexamination Certificate
active
07460299
ABSTRACT:
In a rear projection display apparatus including a transmission type screen installed on the front face of an apparatus main body, and a video projector disposed inside the apparatus main body and projecting video on the transmission type screen from the rear side thereof, the transmission type screen includes a lens sheet and is configured such that a plurality of pull portions provided along horizontal and longitudinal sides of the lens sheet are pulled upward and downward, and leftward and rightward, respectively, by a pulling device provided to extend along the circumference of the lens sheet.
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Hagiwara Yoshihiro
Iwaki Takaaki
Ogawa Yasufumi
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Mahoney Christopher
Sony Corporation
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