公开(公告)号：US11899172B2

公开(公告)日：2024-02-13

申请号：US17038066

申请日：2020-09-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chung-Yu Wei ,  Wen-Yao Yang ,  Yi-Hsiang Chuang ,  Tzu-Chieh Kuo

IPC: G02B13/00 ,  G02B9/60

CPC classification number: G02B13/0045 ,  G02B9/60

Abstract: An imaging optical 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. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The third lens element has positive refractive power. At least one of the object-side surface and the image-side surface of at least one of the five lens elements includes at least one critical point in an off-axis region thereof.

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：US11703665B2

公开(公告)日：2023-07-18

申请号：US17107503

申请日：2020-11-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yi-Hsiang Chuang ,  Wen-Yao Yang ,  Tzu-Chieh Kuo

IPC: G02B9/62 ,  G02B13/16

CPC classification number: G02B9/62 ,  G02B13/16

Abstract: An image capturing lens assembly includes six 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 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. The fourth lens element with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. At least one of an object-side surface and an image-side surface of at least one lens element has at least one inflection in an off-axis region thereof.