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. 22, 2008
Filed:
Jun. 02, 2005
Akira Yamamoto, Yokohama, JP;
Naosato Taniguchi, Saitama, JP;
Shuichi Kobayashi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A display optical system includes a light-source unit, a first optical unit which collects a light beam from the light-source unit, a scanning member which scans the light beam from the first optical unit, and a second optical unit which focuses the light beam scanned by the scanning member on about a scanning surface. An optical axis, defined by an optical path along which a light ray travels from the center of the scanning member to the center of the scanning surface via the second optical unit, intersects itself. In addition, the second optical unit includes two reflective mirrors having positive optical powers.