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:
Jan. 04, 1983
Filed:
Oct. 02, 1980
Takeo Takahashi, Takasaki, JP;
Kazuhiro Kurata, Hachioji, JP;
Yuichi Ono, Tokyo, JP;
Kazuhiro Ito, Tokyo, JP;
Makoto Morioka, Tokyo, JP;
Mitsuhiro Mori, Kokubunji, JP;
Ginro Takemura, Okegawa, JP;
Makoto Sakamoto, Maebashi, JP;
Masahiro Ichiki, Tamamuramachi, JP;
Youichi Yasuda, Takasaki, JP;
Hirobumi Ouchi, Hino, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An optical semiconductor device includes a light emitting element disposed on a silicon sub-mount having a light receiving element formed in a surface region. By virtue of integral arrangement of the light emitting element and the light receiving element, a single lens can be used for both optical transmission and optical reception, whereby an optical communication system can be manufactured very inexpensively. Further, transmission and reception can be carried out simultaneously.