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:
Jul. 10, 2012
Filed:
Mar. 15, 2010
Yoshito Iwasawa, Suwon-si, KR;
Yoshito Iwasawa, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A zoom lens and an imaging optical device having the same. The zoom lens includes: in order from an object side, a first lens group having negative refractive power; a second lens group having positive refractive power; and a third lens group having positive refractive power. A light adjusting unit is disposed between the second and third lens groups. The first lens group includes a negative lens having an aspherical surface at least on an image side, and a positive lens having large curvature on the object side. The second lens group includes a front group on the object side, and a rear group. The front group includes a positive lens having an aspherical surface at the object side, the front group having positive refractive power as a whole. The rear group includes a doublet lens including positive and negative lenses. The rear group has negative refractive power as a whole. The front and rear groups are spaced apart from each other by an air gap.