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. 05, 2009
Filed:
Jun. 17, 2008
Yasushi Yamamoto, Kishiwada, JP;
Yasushi Yamamoto, Kishiwada, JP;
Konica Minolta Opto, Inc., Haichioji-Shi, JP;
Abstract
A zoom lens system includes, in order from an object side: a first lens group having negative power, a second lens group having negative power, a third lens group having positive power, and, a fourth lens group having positive power. The position of the first lens group is fixed during zooming, and the third lens group includes three single lenses including, in order from the object side, a third-first single lens having positive power, a third-second single lens having negative power and a third-third single lens having negative power. The zoom lens system satisfies the following conditional expression:0.4<3/<1.2where Lrepresents the axial air gap distance between the third-second lens and the third-third lens and fw represents the focal length of the entire system of the zoom lens system at a wide angle end position.