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. 16, 1996
Filed:
Aug. 03, 1994
Applicant:
Inventors:
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354402 ; 354403 ; 356-31 ;
Abstract
A focusing controller for photographic apparatuses includes: a distance meter which detects film-to-object distance to calculate and emit a distance signal; a lens shifting distance calculating device which calculates a lens shifting distance for effecting focusing in a focusing optical system on the basis of the distance signal by using one or two or more linear expressions; and a driving device for driving the focusing optical system in accordance with the lens shifting distance; the focusing controller allowing both the lens shifting amount for the focusing optical system and the reciprocal of film-to-object distance to be set at equal intervals.