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:
Jul. 01, 2008
Filed:
Apr. 05, 2004
Masatoshi Yonekubo, Hara-mura, JP;
Daisuke Uchikawa, Chino, JP;
Shunji Kamijima, Hara-mura, JP;
Takashi Takeda, Suwa, JP;
Masatoshi Yonekubo, Hara-mura, JP;
Daisuke Uchikawa, Chino, JP;
Shunji Kamijima, Hara-mura, JP;
Takashi Takeda, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projector includes a laser beam source that outputs a laser beam and modulates the laser beam in a beam form based on an image signal, a scanning unit that scans the laser beam output by the laser beam source at least in one-dimensional direction, a scan driving unit that drive controls the scanning unit by a first force, a retaining unit that stops and retains the scanning unit at a predetermined position by a second force, and a light shielding unit that shields the laser beam from the scanning unit that is retained by the retaining unit. The scan driving unit releases the scanning unit retained by the retaining unit, and drives it when the first force is larger than the second force. The retaining unit stops and retains the scanning unit at the predetermined position when the second force is larger than the first force.