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. 12, 1988
Filed:
Dec. 16, 1985
Applicant:
Inventors:
Kunihisa Hoshino, Urawa, JP;
Ken Utagawa, Kawasaki, JP;
Yosuke Kusaka, Yokohama, JP;
Shozo Yamano, Tokyo, JP;
Assignee:
Nippon Kogaku K. K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; H04N / ;
U.S. Cl.
CPC ...
354408 ; 35821319 ;
Abstract
A focus detecting apparatus for a camera has a charge storage type image sensor for controlling focusing on the basis of output from the image sensor. In the apparatus, object information having comparatively high correlation with focus detection precision is detected and charge storage time of a photoelectric conversion element is controlled in accordance with the detected object, whereby charge storage time is optimally controlled irrespective of object luminance distribution even if an object luminance level varies in a wide range, thereby performing high-speed, stable focus detection.