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. 28, 2001
Filed:
Dec. 04, 1998
Applicant:
Inventor:
Kazunori Suzuki, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/100 ;
U.S. Cl.
CPC ...
G03B 2/100 ;
Abstract
It is proposed to provide a projection apparatus capable of displaying an image by eliminating or reducing the influence of dust. The projection apparatus for projecting image information on a display surface such as a screen, comprises a dust preventive structure (prevention from attaching a foreign substance) of dusting main apparatus members such as an optical modulation device.