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:
Feb. 14, 2006
Filed:
Nov. 22, 2002
Katsu Yamada, Matsubara, JP;
Shuusuke Ono, Takatsuki, JP;
Katsu Yamada, Matsubara, JP;
Shuusuke Ono, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A zoom lens capable of correcting camera shake and being reduced in size and weight, comprising five groups of lenses respectively having positive, negative, positive, negative, positive refractive powers, the second lens group () varying power, the fifth lens group () adjusting focusing. The third lens group () is moved in a direction perpendicular to the optical axis when correcting camera shake. When lens power on the object side of a cemented lens in the first lens group () is φ, lens power on the image plane side φ, the Abbe number of a lens on the object side ν, and the Abbe number of a lens on the image plane side ν, the condition of the following Expression 82 is satisfied:−75<νν(φ+φ)/(φν+φν)<−50.Expression 82.