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. 07, 2012
Filed:
Nov. 07, 2008
Yasuhisa Watabe, Yokohama, JP;
Nobuyuki Kimura, Yokohama, JP;
Yoshimasa Takeuchi, Yokohama, JP;
Shinro Inui, Hachioji, JP;
Yasuhisa Watabe, Yokohama, JP;
Nobuyuki Kimura, Yokohama, JP;
Yoshimasa Takeuchi, Yokohama, JP;
Shinro Inui, Hachioji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A projection type image display apparatus comprising a light source, an optical integrator, by which light outgoing from the light source is changed in distribution of illumination, a color separation optical system, by which light outgoing from the optical integrator is separated into a plurality of light beams, and a relay optical system including a plurality of relay lenses, by which light beams separated by the color separation optical system are relayed, and a reflection mirror. The relay optical system includes a device that adjusts angles of inclination of at least one of the relay lenses with respect to an optical axis of illumination of light outgoing from the light source.