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. 10, 2012
Filed:
Mar. 27, 2008
Kenji Konno, Sakai, JP;
Kenji Mizumoto, Osaka, JP;
Kenji Konno, Sakai, JP;
Kenji Mizumoto, Osaka, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
An object of the present invention is to provide an image projector capable of projecting a high-quality image while realizing small size. In the image projector, a light flux is deflected two-dimensionally by turning a reflector for reflecting a light flux emitted from a light source around a second axis almost orthogonal to a first axis as a center by resonant drive while turning the reflector around the first axis as a center by non-resonant drive. Shape of one or more optical surfaces of a projection optical system for projecting an image onto a projection plane by guiding light onto the projection plane includes a shape for performing a correction for maintaining scanning speed of the light flux along one scan direction on the projection plane almost constant and a shape for performing a correction for suppressing a distortion in an image along the other scan direction almost orthogonal to the one scan direction on the projection plane. By controlling turn of the reflector, at least one of a correction for maintaining scanning speed of the light flux along the other scan direction on the projection plane almost constant and a correction for suppressing a distortion in an image along the one scan direction on the projection plane is performed.