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:
Jun. 14, 2011
Filed:
Jun. 11, 2010
Eiji Morikuni, Matsumoto, JP;
Akira Shinbo, Shiojiri, JP;
Hideya Seki, Okaya, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
There is provided a screen and a projector using a simple configuration and operation to make speckles less visible. A screenon which light beams are incident includes a lenticular lensas a first layer having viewing angle control means for enlarging the viewing angle and a Fresnel lensas a second layer having angular conversion means for converting the angles of incidence of the incident light beams into the substantially same direction. One of the first and second layers has a diffusion capability that diffuses the incident light beams and has moving means for moving that layer relative to the other. Alternatively, the first and second layers both have the diffusion capability, and at least one of the layers has moving means for moving that layer relative to the other.