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. 10, 1991
Filed:
Aug. 01, 1989
Applicant:
Inventors:
Yasutoshi Yagiu, Ibaraki, JP;
Tetsuo Kumazawa, Ibaraki, JP;
Makoto Shimaoka, Ushiku, JP;
Kunio Aiki, Komoro, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350 9620 ; 350 34 ; 350 49 ; 350 92 ;
Abstract
A collimated-beam generating device using a semiconductor laser includes a two-lens system in which light converged by a first lens is converted into a collimated beam by a second lens, whereby a distance between the semiconductor laser and the first lens is made large, assembly of the device is made easy, and a collimated beam having a small beam diameter can be produced.
Quick Actions:
Yagiu, Yasutoshi. (1991). Semiconductor light emitting device and apparatus using the same (U.S. Patent No. 5046798). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5046798
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile