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. 30, 1994
Filed:
Oct. 12, 1993
Hiroshi Takahashi, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
A camera has a photomerry device to measure luminance of an object. The camera is provided with a strobe unit in which a strobe light is automatically emitted when the result of measurement by the photometry device is smaller than a predetermined luminance and an amount of light emission can be changed. The camera with the strobe unit includes a range finder to measure a distance of an object; a memory having a flashmatic calculation table in which F-number corresponding to the distance of the object are set according to a guide number which is used as a reference; a calculator in which a value of the guide number is changed according to a reference F-number in the flashmatic calculation table obtained by the measurement by the range finder and a desired F-number is found. The camera further includes a controller in which a strobe light is emitted by controlling the strobe unit by the desired F-number obtained by the calculation result of the calculator.