公开(公告)号：US11860447B2

公开(公告)日：2024-01-02

申请号：US17137662

申请日：2020-12-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wen-Yao Yang ,  Kuan-Chun Wang ,  Hsin-Hsuan Huang ,  Huan-Sheng Chang

IPC: G02B9/60 ,  G02B13/00 ,  G02B3/04

CPC classification number: G02B9/60 ,  G02B3/04 ,  G02B13/0045

Abstract: An imaging optical lens assembly includes five lens elements. The five lens elements in order from an object side to an image side along an optical path are a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface facing the object side and an image-side surface facing the image side. The first lens element has positive refractive power, the second lens element has negative refractive power and the third lens element has negative refractive power. With specific conditions being satisfied, the imaging optical lens assembly can be miniaturized while providing good image quality.

公开(公告)号：US11828910B2

公开(公告)日：2023-11-28

申请号：US17343816

申请日：2021-06-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chung-Yu Wei ,  Hung-Shuo Chen ,  Kuan-Chun Wang ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B9/60 ,  G02B27/00

CPC classification number: G02B13/0045 ,  G02B9/60 ,  G02B27/0025

Abstract: An image lens assembly includes five 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 and a fifth lens element. The first lens element has positive refractive power. The third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element has 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 of the fifth lens element includes at least one convex critical point in an off-axis region thereof.

公开(公告)号：US12117596B2

公开(公告)日：2024-10-15

申请号：US18487219

申请日：2023-10-16

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chung-Yu Wei ,  Hung-Shuo Chen ,  Kuan-Chun Wang ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B9/60 ,  G02B27/00

CPC classification number: G02B13/0045 ,  G02B9/60 ,  G02B27/0025

Abstract: An image lens assembly includes five 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 and a fifth lens element. The first lens element has positive refractive power. The third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element has 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 of the fifth lens element includes at least one convex critical point in an off-axis region thereof.

公开(公告)号：US11487089B2

公开(公告)日：2022-11-01

申请号：US16992304

申请日：2020-08-13

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen Lin ,  Kuan-Chun Wang ,  Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/60

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