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, 1995
Filed:
Jul. 30, 1993
Applicant:
Inventors:
Takeya Tsukamoto, Ibaraki, JP;
Masatoshi Itoh, Takatsuki, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354400 ; 35419512 ;
Abstract
This zooming device performs auto-zooming by determining the focal length based on the object distance. When the degree of zooming is large, it performs zooming at a speed appropriate to that degree. Further, when a conversion lens is mounted to change the focal length, the device determines focal length while taking into account the degree of change in focal length effected by the conversion lens.