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. 29, 2006
Filed:
Mar. 17, 2004
Taketoshi Hibi, Tokyo, JP;
Yuzo Nakano, Tokyo, JP;
Taketoshi Hibi, Tokyo, JP;
Yuzo Nakano, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A plurality of reflecting mirrors () extending in the vertical direction of a screen are provided in parallel as appropriate between a light incident surface and a light exiting surface. The reflecting mirrors () each have a shape of parabolic cylinder, for condensing light on substantially one line. Light rays (L) are reflected from a concave mirror part on the inner surface of one of the reflecting mirrors (), and are reflected again from a convex mirror part of an adjacent one of the reflecting mirrors (), to be emitted to the outside. Being reflected from the inner surface of one of the reflecting mirrors (), the light rays (L) are condensed on a predetermined focal point (FP), and are then emitted while diffusing. Thus obtained is a diffuser panel for a rear projection screen capable of contributing to improved clarity of images.