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:
Mar. 14, 1989
Filed:
Jun. 29, 1988
Applicant:
Inventors:
Ken Utagawa, Kawasaki, JP;
Yoshinari Hamanishi, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354402 ; 354406 ;
Abstract
A detecting apparatus for focus in a camera has a memory storing at least two independent rates indicating an aberration of a photographing lens. The memory is provided on an interchangeable photographing lens. If an optical characteristic of the focus detecting apparatus within the camera body changes from a conventional one, a suitable aberration correction rate is decided accordingly on a camera body side, thereby ensuring a high precision focus detection then forward.