公开(公告)号：US11822056B2

公开(公告)日：2023-11-21

申请号：US18080548

申请日：2022-12-13

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Tai Tseng ,  Yu-Chun Ke ,  Kuo-Jui Wang ,  Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/34

CPC classification number: G02B13/004 ,  G02B9/34

Abstract: An imaging optical lens assembly includes four lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.

公开(公告)号：US11982875B2

公开(公告)日：2024-05-14

申请号：US17144244

申请日：2021-01-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui Wang ,  Tzu-Chieh Kuo

IPC: G02B9/64 ,  G02B13/00 ,  H04N5/225 ,  H04N23/54 ,  H04N23/55

CPC classification number: G02B9/64 ,  G02B13/0045 ,  H04N23/54 ,  H04N23/55

Abstract: An image capturing lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path, 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, each of the seven lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element has negative refractive power. The third lens element has positive refractive power. The seventh lens element has negative refractive power.

公开(公告)号：US11555986B2

公开(公告)日：2023-01-17

申请号：US17103699

申请日：2020-11-24

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Tai Tseng ,  Yu-Chun Ke ,  Kuo-Jui Wang ,  Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/34

Abstract: An imaging optical lens assembly includes four lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.

公开(公告)号：US11487088B2

公开(公告)日：2022-11-01

申请号：US16928950

申请日：2020-07-14

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui Wang ,  Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/64 ,  G02B13/02 ,  G02B13/06

Abstract: An imaging lens assembly includes seven lens elements which are, in order from an object side to an image side along an optical path: 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. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The second lens element has positive refractive power. The sixth lens element has positive refractive power, and the image-side surface of the sixth lens element is convex in a paraxial region thereof. The seventh lens element has negative refractive power. At least one of the object-side surface and the image-side surface of at least one lens element of the imaging lens assembly is aspheric and has at least one inflection point.

公开(公告)号：US11668907B2

公开(公告)日：2023-06-06

申请号：US16779427

申请日：2020-01-31

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui Wang ,  Hsin-Hsuan Huang

IPC: G02B13/00 ,  G02B9/62

CPC classification number: G02B13/0045 ,  G02B9/62

Abstract: A photographing optical lens assembly includes six lens elements which are, 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 and a sixth lens element. Each of the six lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The second lens element has negative refractive power. The third lens element has negative refractive power. The fourth lens element has negative refractive power. The fifth lens element has positive refractive power. The sixth lens element has negative refractive power. An axial distance between the fourth lens element and the fifth lens element is larger than an axial distance between the fifth lens element and the sixth lens element.

公开(公告)号：US11644651B2

公开(公告)日：2023-05-09

申请号：US17020611

申请日：2020-09-14

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui Wang ,  Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/64 ,  G02B13/02 ,  G02B15/20 ,  G02B15/24 ,  G02B15/15

CPC classification number: G02B13/0045 ,  G02B9/64 ,  G02B13/02 ,  G02B15/15 ,  G02B15/20 ,  G02B15/24

Abstract: An image capturing lens system includes four lens groups which include eight lens elements. The four lens groups are, in order from an object side to an image side: first, second, third and fourth lens groups. The eight lens elements are, in order from the object side to the image side: first, second, third, fourth, fifth, sixth, seventh and eighth lens elements. The first and second lens elements respectively have positive and negative refractive power. At least one lens element in the second through fourth lens groups has an inflection point. A focal length of the image capturing lens system is varied by changing axial distances between the four lens groups in a zooming process. The second lens group is moved relative to the first lens group along an optical axis in the zooming process. The image capturing lens system has a long-focal-length end and a short-focal-length end.

公开(公告)号：US10908391B2

公开(公告)日：2021-02-02

申请号：US16112666

申请日：2018-08-25

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Tai Tseng ,  Yu-Chun Ke ,  Kuo-Jui Wang ,  Tzu-Chieh Kuo

IPC: G02B13/18 ,  G02B3/02 ,  G02B13/00 ,  G02B9/34

Abstract: An imaging optical lens assembly includes four lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.

公开(公告)号：US11906714B2

公开(公告)日：2024-02-20

申请号：US17893803

申请日：2022-08-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui Wang ,  Cheng-Chen Lin ,  Wei-Yu Chen

IPC: G02B9/00 ,  G02B13/18 ,  G02B9/64 ,  G02B13/00

CPC classification number: G02B13/18 ,  G02B9/64 ,  G02B13/0045

Abstract: A photographing optical lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path: 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 third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element has an object-side surface being convex in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.

公开(公告)号：US11662551B2

公开(公告)日：2023-05-30

申请号：US16814914

申请日：2020-03-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuo-Jui Wang ,  Kuan Chun Wang ,  Hung-Shuo Chen ,  Jin Sen Wang ,  Syuan Ruei Lai ,  Wei-Yu Chen

IPC: G02B9/34 ,  G02B13/18 ,  G02B13/00 ,  G02B13/14 ,  G02B5/00 ,  G02B27/00 ,  G02B3/04

CPC classification number: G02B9/34 ,  G02B13/004 ,  G02B13/18 ,  G02B3/04 ,  G02B5/005 ,  G02B13/14 ,  G02B27/0025

Abstract: An optical lens assembly includes four lens elements which are, in order from an object side to an image side along an imaging optical path: a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has positive refractive power. The second lens element has an image-side surface being concave in a paraxial region thereof. The third lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and at least one of the object-side surface and the image-side surface of the fourth lens element has at least one inflection point in an off-axis region thereof.

公开(公告)号：US11372204B2

公开(公告)日：2022-06-28

申请号：US16413200

申请日：2019-05-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hung-Shuo Chen ,  Syuan Ruei Lai ,  Kuo-Jui Wang ,  Po-Lun Hsu ,  Wei-Yu Chen

IPC: G02B9/62 ,  H04N5/225 ,  G02B7/02

Abstract: An imaging optical lens assembly includes six lens elements which are, 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 and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof.