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:
Nov. 18, 2003
Filed:
Oct. 18, 2001
Applicant:
Inventor:
Katsumi Kurematsu, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 2/600 ; G02B 2/608 ; G02F 1/00 ;
U.S. Cl.
CPC ...
G02B 2/600 ; G02B 2/608 ; G02F 1/00 ;
Abstract
The invention relates to a projection type display apparatus having an optical modulating device ( ) controlling a light reflecting state by using a mirror array device, and a projecting optical system ( ) projecting reflected light of light illuminated from the optical modulating device ( ). In the apparatus, the mirror array device is illuminated by R, G and B color light components from different directions, and at least a part of the reflected light of the mirror array device is selectively guided to the projecting optical system ( ) to project the light on to the screen or the like by controlling a tilt angle of the mirror array device.