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. 18, 1998
Filed:
Mar. 20, 1997
Applicant:
Inventors:
Norihisa Naganuma, Sapporo, JP;
Hideki Noda, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 18 ; 385 16 ; 385 33 ; 385 31 ;
Abstract
An optical device including a lens and an optical thin film for coupling and separating two light components. First and second optical fibers are arranged on one side of the lens at symmetrical positions with respect to the optical axis of the lens, and the optical thin film and a third optical fiber are arranged on the other side of the lens. An isosceles triangular block is arranged to simultaneously move the first and second optical fibers to adjust an incident angle and an emerging angle of the light made incident to the optical thin film. Alternatively, a movable isosceles triangular prism having two oblique reflecting surfaces is arranged.