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:
May. 28, 2019
Filed:
Jun. 14, 2017
Fujifilm Corporation, Tokyo, JP;
Taro Asami, Saitama, JP;
Takeshi Kamiya, Saitama, JP;
FUJIFILM Corporation, Tokyo, JP;
Nanchang O-Film Optical-Electronic Tech Co., Ltd., Jiangxi, CN;
Abstract
Disclosed are an imaging lens having satisfactory performance in a region of near infrared light, and an imaging apparatus including the imaging lens. The imaging lens includes, in order from an object side, as lenses having refractive power, only four lenses including a positive first lens L, a negative second lens L, a positive third lens L, and a positive fourth lens L. A conditional expression relating to a focal length fs1 of the first lens Lwith respect to s-line and a focal length fs of the entire system with respect to s-line: 0.5<fs1/fs<2.5 is satisfied.