公开(公告)号：US20180031807A1

公开(公告)日：2018-02-01

申请号：US15421318

申请日：2017-01-31

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen Chen ,  Shu-Yun Yang

IPC: G02B13/00 ,  G02B9/64

CPC classification number: G02B13/0045 ,  G02B9/64 ,  G02B13/06

Abstract: An optical imaging lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has negative refractive power. The second lens element has negative refractive power. The third lens element has positive refractive power. The fourth lens element has positive refractive power. The fifth lens element has negative refractive power. The seventh lens element has an object-side surface and an image-side surface being both aspheric, wherein at least one of the object-side surface and the image-side surface of the seventh lens element includes at least one inflection point.

公开(公告)号：US20180003924A1

公开(公告)日：2018-01-04

申请号：US15689236

申请日：2017-08-29

Applicant: Largan Precision Co., Ltd.

Inventor： Lin-Yao Liao ,  Hsin-Hsuan Huang ,  Shu-Yun Yang

IPC: G02B13/00 ,  G02B9/34 ,  G02B13/04 ,  G02B27/00

CPC classification number: G02B13/004 ,  G02B9/34 ,  G02B13/04 ,  G02B27/0025

Abstract: This invention provides an optical lens assembly comprising, in order from an object side to an image side: a first lens element with negative refractive power having an image-side surface being concave in a paraxial region thereof; a second lens element having positive refractive power; a third lens element having an object-side surface being concave in a paraxial region thereof; and a fourth lens element having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, the image-side surface thereof having at least one convex shape in an off-axis region thereof; wherein the optical lens assembly has a total of four lens elements. With such configuration, the optical lens assembly of the present disclosure is characterized by a reduced size and a wide field of view.

公开(公告)号：US20170219799A1

公开(公告)日：2017-08-03

申请号：US15161431

申请日：2016-05-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Che Hsueh ,  Hsin-Hsuan Huang ,  Shu-Yun Yang

IPC: G02B13/00 ,  G02B27/01 ,  G02B9/34

CPC classification number: G02B13/004 ,  G02B9/34 ,  G02B27/017 ,  G02B27/0172 ,  G02B2027/011 ,  G02B2027/0123 ,  G02B2027/0138 ,  G02B2027/015 ,  G02B2027/0152 ,  G02B2027/0178

Abstract: An image capturing lens system includes, in order from an object side to an image side, a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, a second lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, a third lens element with positive refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, and a fourth lens element with negative refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof.