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. 05, 2002
Filed:
Oct. 08, 1999
Applicant:
Inventors:
Hiroaki Nakazato, Oyama, JP;
Masashige Kawarai, Oomiya, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/09 ;
U.S. Cl.
CPC ...
G02F 1/09 ;
Abstract
An optical attenuation device to attenuate the intensity of incident light, comprising an optical attenuation unit including at least two different type magneto-optical optical attenuation elements coupled in a cascade together.