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. 28, 1981
Filed:
Sep. 26, 1979
Applicant:
Inventors:
Assignee:
West Electric Company, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
354 21 ; 354 33 ; 354 41 ; 354 43 ; 354127 ; 354149 ; 354196 ; 354289 ;
Abstract
A flash camera having features that an aperture control is made in accordance with the factors whether a film sensitivity is high or low and besides whether a flash apparatus is used, that a constant-voltage circuit of small power consumption is employed thereby enabling to flow current to a meter either continuously or before a photographing and to be free from exposure errors arising from a damping movement of a pointer of the meter and so on, and that an operation of the constant-voltage circuit is controlled by a change-over switch to compensate light intensity variations of a strobe apparatus when power source voltage varies.