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. 08, 2016
Filed:
Mar. 12, 2015
Fujifilm Corporation, Tokyo, JP;
Takashi Suzuki, Saitama-ken, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A wide angle lens consists of a front group, a stop, and a positive rear group in order from the object side. A positive lens with a convex surface on the object side and a lens having a negative meniscus shape with a convex surface on the object side are respectively disposed first and second from the object side in the front group. When Abbe number with respect to the d-line and the partial dispersion ratio between the g-line and the F-line of the lens having a negative meniscus shape are taken as νdf and θgFf respectively, the wide angle lens satisfies a conditional expression (1): 0.038<θgFf −0.6415+0.001618×νdf and a conditional expression (2): νdf<19.