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:
Dec. 29, 1987
Filed:
May. 01, 1986
Takanobu Noro, Yokohama, JP;
Yasumasa Koakutsu, Fujisawa, JP;
Tamio Takeuchi, Yokohama, JP;
Masao Yano, Yokohama, JP;
Seiichi Onoda, Tokorozawa, JP;
Hideo Arima, Yohohama, JP;
Hitoshi Yokono, Fujisawa, JP;
Hirayoshi Tanei, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An optical switch having a small number of optical connections includes a substrate in which are provided a first light path for conducting optical signals and a second light path consisting of a photosensitive element and light emitting element in pairs. An optical fiber cable is interrupted by the substrate, and optical signals in the fiber cable are transmitted through the first light path or intervened by an electrical system through the second light path in response to the switching movement of the substrate.