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. 15, 2011
Filed:
Mar. 04, 2009
Hidehiko Ogasawara, Tokyo, JP;
Nozomu Ozaki, Kanagawa, JP;
Seiji Wada, Kanagawa, JP;
Toshiyuki Sekiya, Tokyo, JP;
Ken Hayakawa, Kanagawa, JP;
Kazuo Haraoka, Tokyo, JP;
Shinji Sangawa, Tokyo, JP;
Masaaki Hattori, Chiba, JP;
Naoki Kaneko, Kanagawa, JP;
Tetsujiro Kondo, Tokyo, JP;
Hidehiko Ogasawara, Tokyo, JP;
Nozomu Ozaki, Kanagawa, JP;
Seiji Wada, Kanagawa, JP;
Toshiyuki Sekiya, Tokyo, JP;
Ken Hayakawa, Kanagawa, JP;
Kazuo Haraoka, Tokyo, JP;
Shinji Sangawa, Tokyo, JP;
Masaaki Hattori, Chiba, JP;
Naoki Kaneko, Kanagawa, JP;
Tetsujiro Kondo, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical selector switch contains an optical waveguide that includes a first optical waveguide portion having a first light-transmissivity, a second optical waveguide portion having a second light-transmissivity, reflecting members that reflect light, and a light-dividing device that reflects and transmits light; at least one light-emitting unit that emits the light toward the first optical waveguide portion of the optical waveguide; and at least one light-receiving unit that receives the light which is incident to the first optical waveguide portion of the optical waveguide from the light-emitting unit, based on a directivity due to an angle of the incident light to the first optical waveguide portion of the optical waveguide, wherein the incident light to the first optical waveguide portion is emitted radially toward the circumference of the second optical waveguide portion of the optical waveguide.