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:
Jan. 18, 2005
Filed:
Jun. 03, 2003
Applicants:
Hiroshi Maki, Kanagawa-ken, JP;
Tetsuo Hattori, Yokohama, JP;
Takuya Shimbo, Hiratsuka, JP;
Inventors:
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2714 ; G03B 2126 ; G03B 2122 ; G02F 11335 ; G02F 11333 ;
U.S. Cl.
CPC ...
Abstract
A projection display apparatus in which a light emitted from a reflective light valve is made incident on a prism member and a light having passed through the prism member is projected by a projection lens, comprises a dust proofing cover that provides a seal between an emergence surface of the reflective light valve and an incidence surface of the prism member.