Title:
IMAGING LENS AND IMAGING DEVICE
Document Type and Number:
Japanese Patent JP2017142297
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an imaging lens with a wide angle, a small F-value, and desirably corrected aberrations, and further to provide an imaging device having the imaging lens.SOLUTION: The imaging lens includes: a first lens group G1; a diaphragm St; and a second lens group G2 with a positive refractive power, in that order from an object side. The first lens group G1 is substantially constituted of one or two negative meniscus lenses with a concave surface facing an image side, a biconcave lens, and a biconvex lens, in that order from the object side. The second lens group G2 includes, in an order from the object side, a 2A lens group G2A and a 2B lens group G2B, in which the 2A lens group G2A includes a positive lens, a negative lens and a positive lens, and presents a positive refractive power as a whole, and the 2B lens group G2B includes a positive lens, a negative lens and a positive lens, and presents a positive refractive power as a whole. The imaging lens satisfies a predetermined conditional expression.SELECTED DRAWING: Figure 1
Inventors:
NODA HIROMASA
CHO MICHIO
CHO MICHIO
Application Number:
JP2016021989A
Publication Date:
August 17, 2017
Filing Date:
February 08, 2016
Export Citation:
Assignee:
FUJIFILM CORP
International Classes:
G02B13/04; G02B13/18
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office
Yanagita Seiji
Go Sakuma
Yanagita Seiji
Go Sakuma
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