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:
Nov. 25, 2008
Filed:
Dec. 11, 2006
Soh Ohzawa, Toyonaka, JP;
Masayuki Inoue, Yokkaichi, JP;
Masayoshi Imoto, Yokkaichi, JP;
Konica Minolta Opto, Inc., Hachioji-Shi, Tokyo, JP;
Sumitomo Electric Industries, Ltd., Osaka-Shi, Osaka, JP;
AutoNetworks Technologies, Ltd., Yokkaichi-Shi, Mie, JP;
Sumitomo Wiring Systems, Ltd., Yokkaichi-Shi, Mie, JP;
Abstract
An ultra wide angle imaging optical system includes, in order from an object side, a first lens group, an aperture stop, and a second lens group. The first lens group includes, in order from the position closest to the object side, a negative meniscus lens element convex to the object side, a negative lens element, and a negative lens element. The second lens group includes a plurality of positive lens elements. The first lens group and the second lens group each includes at least one anamorphic surface having different optical powers with respect to a first section extending in a first direction on a flat plane substantially orthogonal to an optical axis, and with respect to a second section extending in a second direction substantially orthogonal to the first direction. The first lens group includes the lens element satisfying the following conditional formula (1):−0.6<()*()<−0.1  (1)where