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. 29, 2006
Filed:
May. 31, 2002
Masayuki Kato, Kawasaki, JP;
Akio Sugama, Kawasaki, JP;
Koji Tsukamoto, Kawasaki, JP;
Yasuo Yamagishi, Kawasaki, JP;
Masayuki Kato, Kawasaki, JP;
Akio Sugama, Kawasaki, JP;
Koji Tsukamoto, Kawasaki, JP;
Yasuo Yamagishi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical waveguide and a first lens are formed on an underlying surface. The optical waveguide guides light along a first direction. The first lens is continuous with one end of the waveguide and converges light radiated from the end plane of the optical waveguide and diverging along directions parallel to the underlying surface. A second lens converges light transmitted through the first lens and diverging along directions perpendicular to the underlying surface. A support member supports the first and second lenses. It is possible to prevent a shift of positions of the optical waveguide and lens to be caused by a temperature change and to prevent a light coupling efficiency from being lowered.