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:
Nov. 06, 2001
Filed:
Jun. 23, 2000
Minoru Ishiguro, Omiya, JP;
Abstract
In a camera with a shutter that also works as a diaphragm and adjusts an aperture of a lens and a shutter speed by controlling an opening shape, a first opening value for obtaining a target exposure is found according to a subject distance, a guide number of an electronic flash, a film speed and a control target value of an exposure of the electronic flash. Then, a range of a second opening value for an electronic flash light-emission control is found according to an exposure value determined from a photometry value and the film speed. When the photometry value is more than a predetermined value for an AE control, if the first opening value is more than a predetermined value lower than a minimum value of the range of the second opening value or more than the predetermined value higher than a maximum value of the range of the second opening value, the light-emission of the electronic flash is prohibited.