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. 22, 2009
Filed:
Dec. 09, 2004
Toshifumi Yokoyama, Osaka, JP;
Ken'ichi Kasazumi, Osaka, JP;
Akihiro Morikawa, Osaka, JP;
Kiminori Mizuuchi, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Toshifumi Yokoyama, Osaka, JP;
Ken'ichi Kasazumi, Osaka, JP;
Akihiro Morikawa, Osaka, JP;
Kiminori Mizuuchi, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In a display unit which makes coherent light perform scanning on a screen to display an image, it is necessary to rotate a polygon mirror at ultrahigh speed for display of a high resolution image such as HDTV, and therefore, a high-performance polygon mirror must be employed, and further, noise and power consumption during rotation of the polygon mirror cause problems. Mirrors for multiple reflection () and () are inserted in a coherent light scanning optical system, whereby plural scanning lines can be obtained while one plane of the polygon mirror () scans one line of coherent light, leading to reduction in the rpm of the polygon mirror.