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:
Dec. 17, 1985
Filed:
Aug. 15, 1983
Sachio Omori, Yokosuka, JP;
Hideshi Naito, Tokyo, JP;
Hitoshi Imanari, Funabashi, JP;
Takeshi Muryoi, Chigasaki, JP;
Nippon Kogaku K.K., Tokyo, JP;
Abstract
A zoom lens assembly comprises an optical system including, in succession from the object side, a stationary lens group, a first movable lens group, a second movable lens group and a third movable lens group, a stationary barrel for holding the stationary lens group, first, second and third movable barrel members disposed in the stationary barrel for sliding movement in the direction of the optical axis and holding the first, second and third movable lens groups, respectively, and lens driving means including means for sliding the first movable barrel member for focusing and means for sliding the second and third movable barrel members for zooming.