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:
Feb. 19, 1985
Filed:
Dec. 07, 1982
Applicant:
Inventor:
Toyohiko Kiyohara, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9610 ; 357 25 ; 357 30 ;
Abstract
A light triggered thyristor device is improved by providing a light guide having a taper portion and acting to condense incident light while being constructed so as to achieve total internal reflection of the light passing therethrough. With this construction, the exit end of the light guide, as well as the light receiving portion of the thyristor, can be reduced in size.