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:
Jun. 27, 1989
Filed:
May. 25, 1988
Tsunekazu Okada, Kanagawa, JP;
Nozomu Yamaguchi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A semiconductor laser apparatus which detects a laser beam from a semiconductor laser element by using a light-receiving element so as to perform automatic light power control, the temperature characteristic of the power of a laser beam which is transmitted through an end face protection film of the semiconductor laser element and the detected power of the light-receiving element have inverse characteristics relative to each other, and variations in intensity of the output light due to changes in temperature are minimized.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile