Title:
撮像レンズおよび撮像装置
Document Type and Number:
Japanese Patent JP7225047
Kind Code:
B2
Abstract:
The imaging lens consists of a positive first lens group, a stop, and a positive second lens group in order from the object side to the image side. An Ln lens, which is a negative lens having an absolute value of a curvature radius of an image side surface smaller than an absolute value of a curvature radius of an object side surface, is disposed at a position closest to the image side in the first lens group. In a Cartesian coordinate system in which a horizontal axis is an Abbe number ν and a vertical axis is a partial dispersion ratio θ, ν and θ of the Ln lens are included in a predetermined region.
Inventors:
Toshihiro Aoi
Application Number:
JP2019137037A
Publication Date:
February 20, 2023
Filing Date:
July 25, 2019
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B13/14; G02B13/00
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Attorney, Agent or Firm:
Patent Attorney Corporation Taiyo International Patent Office