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. 22, 2000
Filed:
Mar. 13, 1998
Applicant:
Inventors:
Atsushi Sekine, Saitama, JP;
Tetsuo Hattori, Kanagawa, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
359487 ; 359483 ; 362 19 ; 353 20 ;
Abstract
In the present projection apparatus, R, G and B lights in the form of a S polarized light emitted from a fly-eye lens and a field lens are separated and the S polarized light is converted to a P polarized light so that it is illuminated onto a light valve. The S polarized light separated by the polarization beam splitter is illuminated onto the light valve converted to the P polarized light without being discarded, illuminance of the light onto the light valve is uniform and its polarization azimuth is arranged in the form of the P polarized light.