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.

公开(公告)号：US12181730B2

公开(公告)日：2024-12-31

申请号：US17540753

申请日：2021-12-02

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yi-Hsiang Chuang ,  Wei-Yu Chen

IPC: G02B9/60 ,  G02B13/00

Abstract: A photographing optical lens system includes five lens elements being, 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 lens element 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 and the object-side surface being convex in a paraxial region thereof. The image-side surface of the third lens element is convex in a paraxial region thereof. The object-side surface of the fourth lens element is convex in a paraxial region thereof. The fifth lens element has negative refractive power, the object-side surface being convex, and the image-side surface being concave in a paraxial region thereof.

公开(公告)号：US12019306B2

公开(公告)日：2024-06-25

申请号：US17382049

申请日：2021-07-21

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yi-Hsiang Chuang ,  Kuan Chun Wang ,  Chun-Yen Chen ,  Kuan-Ting Yeh ,  Yu-Chun Ke ,  Tzu-Chieh Kuo

IPC: G02B9/62 ,  G02B13/00

CPC classification number: G02B9/62 ,  G02B13/0045

Abstract: An optical imaging system 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. 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 negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is concave in a paraxial region thereof. The fourth lens element has negative refractive power. The image-side surface of the sixth lens element is concave in a paraxial region thereof and has at least one critical point in an off-axis region thereof.

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.