The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2009
Filed:
Nov. 22, 2005
Kosaku Murakami, Tokyo, JP;
Sadakazu Tomita, Tokyo, JP;
Hidekazu Kodera, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
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.