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:
Feb. 24, 2009
Filed:
Aug. 18, 2005
Toshiaki Tokita, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Atsushi Takaura, Tokyo, JP;
Kazuya Miyagaki, Kanagawa, JP;
Takanobu Osaka, Kanagawa, JP;
Yasuyuki Takiguchi, Kanagawa, JP;
Hiroyuki Sugimoto, Kanagawa, JP;
Yumi Matsuki, Kanagawa, JP;
Yukiko Hirano, Kanagawa, JP;
Toshiaki Tokita, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Toshiharu Murai, Kanagawa, JP;
Atsushi Takaura, Tokyo, JP;
Kazuya Miyagaki, Kanagawa, JP;
Takanobu Osaka, Kanagawa, JP;
Yasuyuki Takiguchi, Kanagawa, JP;
Hiroyuki Sugimoto, Kanagawa, JP;
Yumi Matsuki, Kanagawa, JP;
Yukiko Hirano, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical element, an optical device, and a display device are disclosed that are able to change a polarization state in time order and to produce polarized light with little wavelength dependence and superior in polarization purity, and able to perform pixel shift easily and accurately to realize high resolution image display. The optical element has a translucent surface parallel to the rotational axis of the optical element, and at least a portion of the translucent surface is formed from an optically anisotropic medium. A polarization state of a light beam transmitting through the translucent surface is switched in time order along with rotation of the optical element.