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:
Jan. 31, 2012
Filed:
Sep. 30, 2010
Takamichi Kurashige, Funabashi, JP;
Takamichi Kurashige, Funabashi, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A wide-angle lens WL including, in order from an object: a first lens Lwhich is a negative meniscus lens having a convex surface facing the object; a second lens Lwhich is a positive lens; a third lens Lwhich is a negative lens; a fourth lens Lwhich is a positive lens; and a fifth lens Lwhich is a positive lens, wherein the condition of 0.2<d8/f<0.64 is satisfied, where d8 denotes an air distance between the fourth lens Land the fifth lens Lon an optical axis, upon focusing on an object point at infinity, and f denotes a focal length of the wide-angle lens WL upon focusing on an object point at infinity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile