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:
Aug. 11, 1998
Filed:
Jan. 23, 1997
Applicant:
Inventors:
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
396 56 ; 396171 ; 396182 ; 396187 ;
Abstract
An electronic flash device with a slave emission function, includes a light-receiving circuit unit for starting slave emission in response to the steep leading edge of an optical signal, a light-emitting unit for irradiating illumination light for a photographing operation onto an object, an attachment member to a camera, for detecting the attachment state of the to the camera, and light emission stopping means for, when the detects that the attachment member is mounted on the camera, stopping the light emission by the light-emitting unit in response to light received by the light-receiving circuit unit.