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:
Sep. 04, 1990
Filed:
Jul. 14, 1988
Applicant:
Inventors:
Kazuomi Yoshida, Hyogo, JP;
Hideyo Higuchi, Hyogo, JP;
Hitoshi Mizuochi, Hyogo, JP;
Yousuke Yamamoto, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 17 ; 357 19 ; 372 36 ; 372 75 ;
Abstract
In an optical semiconductor device in which a light emitting element and a light receiving element for monitoring light from the light emitting element are mounted integrally, a spherical lens is provided at a light receiving portion of the light receiving element, the lens having a light receiving area larger than that of said light receiving portion and the spherical surface of the spherical lens is oriented to the light emitting element.