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. 13, 2010
Filed:
May. 11, 2005
Kazuhiro Fujita, Machida, JP;
Takanobu Osaka, Yokohama, JP;
Kazuya Miyagaki, Yokohama, JP;
Atsushi Takaura, Machida, JP;
Masanori Kobayashi, Yokohama, JP;
Hiroyuki Sugimoto, Kawasaki, JP;
Kenji Namie, Yokohama, JP;
Yumi Matsuki, Kawasaki, JP;
Toshiaki Tokita, Yamato, JP;
Kazuhiro Fujita, Machida, JP;
Takanobu Osaka, Yokohama, JP;
Kazuya Miyagaki, Yokohama, JP;
Atsushi Takaura, Machida, JP;
Masanori Kobayashi, Yokohama, JP;
Hiroyuki Sugimoto, Kawasaki, JP;
Kenji Namie, Yokohama, JP;
Yumi Matsuki, Kawasaki, JP;
Toshiaki Tokita, Yamato, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image display apparatus acquires a high-quality image by suppressing positional fluctuation of projected dots due to a positional offset of an optical path deflecting element. A spatial light modulation element () displays an image by projecting a light from an illumination light source. A projection optical system () enlarges and projects the image formed on the spatial light modulation element (). An optical path deflecting element () is provided between the spatial light modulation element () and the image formed on a screen () so as to deflect an optical path in accordance with a screen frame period. The optical path deflecting element () shifts the optical path for the image projected on the screen () at a high rate so as to apparently increase a number of picture elements. The optical path deflecting element () is located within the projection optical system.