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:
Nov. 07, 1978
Filed:
Dec. 18, 1972
Applicant:
Inventor:
Kyozo Uesugi, Osaka, JA;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka-fu, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02b / ;
U.S. Cl.
CPC ...
350187 ; 350255 ;
Abstract
A varifocal lens assembly of simplified construction which essentially comprises a lens mounting for focusing adjustment, a second lens mounting and a third lens mounting cooperative with the second lens mounting for adjustment of the focal length and for correction of optical aberrations resulting from the displacement of the second lens mounting and an operating barrel for operating the first and second lens mountings, either independently or simultaneously. The operating barrel effects, when rotated, the focusing operation and, when axially moved, the zooming operation.