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. 06, 1998
Filed:
Dec. 20, 1995
Katsuhiko Noguchi, Fujiyoshida, JP;
Megumi Horiuchi, Fujiyoshida, JP;
Citizen Electronics Co., Ltd., Yamanashi, JP;
Abstract
A light-emitting element 22 and a light-receiving element 26 are attached to a circuit board so as to oppose each other across the circuit board 2. As a result, light from the light-emitting element 22 arrives at the light-receiving element 26 via the substrate 2. Since the distance between the light-emitting element 22 and the light-receiving element 23 thus becomes very short, the light conversion efficiency is improved by a wide margin. Further, since the substrate 2 is interposed between the light-emitting element 22 and the light-receiving element 26, the elements are completely isolated within the insulation breakdown voltage of the material constituting the substrate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile