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. 25, 2003
Filed:
May. 25, 2000
Applicant:
Inventors:
Katsunori Kawano, Nakai-machi, JP;
Jiro Minabe, Nakai-machi, JP;
Takehiko Niitsu, Nakai-machi, JP;
Tsutomu Ishii, Nakai-machi, JP;
Yasunari Nishikata, Nakai-machi, JP;
Kazuo Baba, Nakai-machi, JP;
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/744 ;
U.S. Cl.
CPC ...
G02B 2/744 ;
Abstract
An optical filtering apparatus and method, wherein at least one polarizer is located in the path of radiation passing through a birefringent medium. The invention can be used to process complementary bands of spatial frequency spectra. The invention can be practiced using a polarizing beam splitter. The invention can also be practiced using an optical storage layer forming part of the birefringent medium.