Optical: systems and elements – Projection screen
Reexamination Certificate
2005-11-22
2009-08-04
Mahoney, Christopher (Department: 2862)
Optical: systems and elements
Projection screen
C359S900000
Reexamination Certificate
active
07570422
ABSTRACT:
In an image-displaying screen that is formed of a plurality of plates having lens structure, the reliability of the fixing between the plurality of plates is enhanced. A screen that displays an image includes a lenticular lens plate and a Fresnel lens plate that is fixed to the lenticular lens plate by thermal welding. Because the lenticular lens plate and the Fresnel lens plate are thus fixed together by thermal welding, the fixing strength between the lenticular lens plate and the Fresnel lens plate is not deteriorated by repeated distortion of the welded portion, as would be caused by temperature variations etc. when a welding agent is used to fix them. This enhances the reliability of the fixing between the lens plates.
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Kodera Hidekazu
Murakami Kosaku
Tomita Sadakazu
Birch & Stewart Kolasch & Birch, LLP
Mahoney Christopher
Mitsubishi Denki & Kabushiki Kaisha
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