Title:
撮像レンズ
Document Type and Number:
Japanese Patent JP7360266
Kind Code:
B2
Abstract:
There is provided an imaging lens with excellent optical characteristics while satisfying demand of wide field of view. An imaging lens comprises, in order from an object side to an image side, a first lens with negative refractive power in a paraxial region, a second lens with positive or negative refractive power having an object-side surface being concave in a paraxial region, a third lens with positive refractive power having a biconvex shape with convex surfaces on the object side and the image side in a paraxial region, and a fourth lens with positive refractive power having an image-side surface being convex in a paraxial region, and predetermined conditional expressions are satisfied.
Inventors:
Shingo Yuza
Naoki Fukaya
Naoki Fukaya
Application Number:
JP2019141898A
Publication Date:
October 12, 2023
Filing Date:
August 01, 2019
Export Citation:
Assignee:
Tokyo Minami Optical Electronics Co., Ltd.
International Classes:
G02B13/04; G02B13/18
Domestic Patent References:
| JP2013109052A | ||||
| JP59195211A | ||||
| JP2009265338A |
Foreign References:
| US20140111850 |
Attorney, Agent or Firm:
Shigenori Hayashi