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.

Date of Patent:
Sep. 30, 2014

Filed:

Aug. 29, 2011
Applicants:

Koji Yoshida, Kanagawa-ken, JP;

Tadashi Kasamatsu, Kanagawa-ken, JP;

Tatsuya Yoshihiro, Kanagawa-ken, JP;

Inventors:

Koji Yoshida, Kanagawa-ken, JP;

Tadashi Kasamatsu, Kanagawa-ken, JP;

Tatsuya Yoshihiro, Kanagawa-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); F21V 8/00 (2006.01); G02B 5/02 (2006.01); G02B 23/24 (2006.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
G02B 5/02 (2013.01); G02B 6/0008 (2013.01); G02B 23/2469 (2013.01);
Abstract

A light diffusing element diffuses light output from an output facet of an optical fiber that enters the light diffusing element at a first end and outputting the diffused light from a second end. The light diffusing element is equipped with a semireflective surface for reflecting a portion of the light, provided at a predetermined portion of the light diffusing element corresponding to the core of the output facet. The semireflective surface intersects at least with the optical axis of the optical fiber. Thereby, propagation of light in directions away from the optical axis of the optical fiber can be promoted during the step of reflecting the portion of the light that enters the light diffusing element.


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