Title:
撮像レンズ
Document Type and Number:
Japanese Patent JP6821276
Kind Code:
B2
Abstract:
There is provided an imaging lens with excellent optical characteristics which satisfies demand of a wide field of view, a low profile and a low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens with positive refractive power in a paraxial region, a second lens, a third lens having an image-side surface being convex in the paraxial region, a fourth lens, a fifth lens with negative refractive power in the paraxial region, a sixth lens with positive refractive power in the paraxial region, and a seventh lens with negative refractive power having an image-side surface that is concave in the paraxial region and is formed as an aspheric surface having at least one pole point in a position off the optical axis.
Inventors:
Nao Fukaya
Application Number:
JP2018199085A
Publication Date:
January 27, 2021
Filing Date:
October 23, 2018
Export Citation:
Assignee:
Kantatsu Co., Ltd.
International Classes:
G02B13/00; G02B13/18
Foreign References:
| TW622822B | ||||
| CN109491044A | ||||
| US20190377161 | ||||
| CN107678131A |