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:
May. 27, 2008
Filed:
Jul. 15, 2003
Takaaki Iwaki, Tokyo, JP;
Kyoichi Murakami, Kanagawa, JP;
Takaaki Iwaki, Tokyo, JP;
Kyoichi Murakami, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A rear projection-type screen includes two sheet-like members having lenses prevented from being deformed and scratched. In the rear projection-type screen () for passing and focusing image light L emitted from an image light source (), two sheet-like members (a lenticular lens sheetand a Fresnel lens sheet) each made of a transparent material and having minute lenses () and () formed on at least one surface thereof are disposed such that their surfaces () and () with the lenses formed thereon confront each other, and a plurality of spacers (), (), . . . are disposed at appropriate spaced intervals between the confronting lenses of the two sheet-like members within an effective screen area () for passing and focusing the image light thereon.