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:
Sep. 24, 2013
Filed:
May. 20, 2011
Hisayuki Yamanaka, Saitama, JP;
Makoto Kanai, Tokyo, JP;
Masafumi Sueyoshi, Tokyo, JP;
Masaharu Hosoi, Tokyo, JP;
Hisayuki Yamanaka, Saitama, JP;
Makoto Kanai, Tokyo, JP;
Masafumi Sueyoshi, Tokyo, JP;
Masaharu Hosoi, Tokyo, JP;
Tamron Co., Ltd, Saitama-shi, JP;
Sony Corporation, Tokyo, JP;
Abstract
An enhanced variable power zoom lens is lightweight in whole and in part, especially, having its focusing lens optics reduced in weight so as to relieve of a load on a focusing drive system, and having its anti-vibration lens optics reduced in both diameter and weight so as to relieve of a load on an anti-vibration drive system and downsize the same. The zoom lens has the foremost or first lens group of positive refractivity, the second lens group of negative refractivity, the third lens group of positive refractivity, the fourth lens group of negative refractivity, and the fifth lens group arranged in sequence from a position closer to the object. The fourth lens group moves toward the image plane for focusing on from the infinity to a proximity object while part of the third lens group moves orthogonal to the optical axis for shifting an image.