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:
May. 31, 2005
Filed:
Sep. 05, 2003
Toru Nakatani, Sakai, JP;
Kyoichi Miyazaki, Sennan, JP;
Shinji Yamaguchi, Osaka, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
An imging lens device has a zoom lens system and an imaging sensor. The zoom lens system has a plurality of lens units and changes gaps between the lens units to thereby generate an optical image of an object which can be optically and successively zoomed in and out. The imaging sensor which converts an optical image generated by the zoom lens system into an electric signal. The zoom lens system comprises, from the object side, a first unit having a negative power, a second unit having a positive power, the second unit having a cemented lens element joining three lens elements, and a lens element having a positive power, a third unit having a positive power, and an aperture stop disposed between the first unit and the second unit. Among the three lens elements which form the cemented lens element, a lens element disposed on the object side directs a convex surface toward the object side while a lens elements disposed on the image side directs a concave surface toward the image side. The zoom lens system is fulfilled the predetermined conditions.