Optics: image projectors – Cabinet encloses projector and one side of screen – Reflector between lamp and screen
Reexamination Certificate
2008-01-08
2008-01-08
Assouad, Patrick (Department: 2862)
Optics: image projectors
Cabinet encloses projector and one side of screen
Reflector between lamp and screen
C353S037000, C359S449000, C359S460000
Reexamination Certificate
active
07316482
ABSTRACT:
The present invention is directed to the provision of a reflecting mirror that suppresses decreases in the resolution performance and contrast performance by decreasing the mean surface roughness. In a projection type image display apparatus including a projector lens that expansion projects the image light from an image generating source and a reflecting mirror that guides the image light from the projector lens to the back face of the screen, according to the present invention, a silver reflecting surface (2) is formed on the substrate (1) of the reflecting mirror, a protective layer (3) of a transparent resin is formed thereon, and the mean surface roughness of the silver reflecting layer is made to be 1.8 nm or less.
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Adachi Kei
Hirata Koji
Masuoka Nobuo
Nishimura Sadayuki
Antonelli, Terry Stout & Kraus, LLP.
Assouad Patrick
Fenwick Warren K
Hitachi , Ltd.
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