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:
Jan. 02, 2007
Filed:
Jul. 16, 2004
Hideki Miyata, Tokyo-To, JP;
Katsunori Takahashi, Tokyo-To, JP;
Hideki Miyata, Tokyo-To, JP;
Katsunori Takahashi, Tokyo-To, JP;
Dai Nippon Printing Co., Ltd., Shinjuku-ku, JP;
Abstract
Provided herein is a rear projection screen capable of displaying a sharper image by reducing deterioration in the image quality, such as coarsening, flickering and glaring. A rear projection screencomprises a Fresnel lens sheethaving, on its light-entering-side surface, a Fresnel lens partin the shape of a Fresnel lens. In the Fresnel lens sheet, both the Fresnel lens partand a part (diffusing part) situated on the light-emerging side of the Fresnel lens partcomprise light-diffusing particles P. The mean particle diameter of the light-diffusing particles P contained in the diffusing partis not more thanof the lens pitch of the Fresnel lens part
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile