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:
Aug. 07, 2012
Filed:
Mar. 12, 2009
Applicants:
Hirotoshi Ichikawa, Tokyo, JP;
Fusao Ishii, Menlo Park, CA (US);
Inventors:
Hirotoshi Ichikawa, Tokyo, JP;
Fusao Ishii, Menlo Park, CA (US);
Assignees:
Silicon Quest Kabushiki-Kaisha, , JP;
Olympus Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A projection apparatus comprising a micromirror device for reflecting and modulating a light emitted from a light source to project a display an image on a display screen. The projection apparatus further includes a projection optical system comprises an adjustable aperture for adjusting an aperture ratio to control an amount of output light reflected from the micromirror device to the image display screen.