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:
Sep. 13, 2011
Filed:
Dec. 14, 2007
Satoshi Kinoshita, Matsumoto, JP;
Satoshi Kinoshita, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A rear projector includes: a screen; a display light source that emits a display light; a first optical modulation element that modulates the display light emitted from the display light source; an excitation light source that emits an excitation light; a second optical modulation element that modulates the excitation light emitted from the excitation light source; and a projection unit that projects, onto the screen, the display light being a result of modulation by the first optical modulation element and the excitation light being a result of modulation by the second optical modulation element. In the rear projector, the screen includes a scattering plate configured by a chassis with a space therein and with at least one surface being light transmissive, and a scattering element filled in the space of the chassis with a light scattering material dispersed in a scattering medium, and the scatting element of the screen is irradiated with the excitation light being the result of modulation by the second optical modulation element.