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:
Jan. 08, 1991
Filed:
Apr. 18, 1990
Masayuki Ikemura, Osaka, JP;
Takehiko Karasaki, Osaka, JP;
Manabu Inoue, Osaka, JP;
Takehiro Katoh, Osaka, JP;
Yasuteru Yamano, Osaka, JP;
Koji Hata, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
The brightness measuring apparatus according to this invention comprises a plurality of light receiving elements for respectively receive light from a plurality of areas in a photographic range and output values corresponding to the areas based on the amounts of light received, and judges whether or not the object is under rear light conditions based on the outputted values and the value of rear light detection level which is decided based on focal length of a photographing lens, image magnification, object distance, or brightness of background.