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:
Apr. 06, 2010
Filed:
Sep. 29, 2004
Yoshihiro Yokote, Osaka, JP;
Shouichi Yoshii, Osaka, JP;
Hideyuki Kanayama, Kyoto, JP;
Takashi Ikeda, Osaka, JP;
Yoshihiro Yokote, Osaka, JP;
Shouichi Yoshii, Osaka, JP;
Hideyuki Kanayama, Kyoto, JP;
Takashi Ikeda, Osaka, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
Modulated light (image light) which has been modulated by passing through a liquid crystal display panel passes through an apical angle variable prism (so-called, a vari-angle prism) and then is enlarged and projected by a projection lens. The apical angle variable prism is configured to change the prism apical angle with, for example, an electromagnetic actuator. The microcomputer calculates a projection optical axis correction value based on hand shake detection signals from a sensor and controls the aforementioned actuator based on the correction value. With this control, shakes of projected images due to hand shakes are prevented.