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:
Jul. 26, 1983
Filed:
Jun. 16, 1982
Applicant:
Inventor:
Isao Kondo, Hachioji, JP;
Assignee:
Olympus Optical Company Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 33 ; 354 / ; 354145 ;
Abstract
An illumination mode switching circuit for an automatic electronic flash includes an illumination mode selecting, changeover switch having a first terminal which is utilized to establish an automatic illumination control level, a second terminal which provides a manual illumination control, and a third terminal which enables a full emission of flashlight from a flash discharge tube. An isolation diode is connected between the second and the third terminal. In this manner, any one of the three modes can be selected by operating the changeover switch.