公开(公告)号：US20240151948A1

公开(公告)日：2024-05-09

申请号：US18414630

申请日：2024-01-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen LIN ,  Hsin-Hsuan HUANG ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B5/00 ,  G02B13/02 ,  G02B27/00

CPC classification number: G02B13/0045 ,  G02B5/00 ,  G02B13/0065 ,  G02B13/02 ,  G02B27/0025

Abstract: A photographing optical lens assembly includes, in order from an object side to an image side along an optical axis, 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 second lens element has negative refractive power. The third lens element has an object-side surface being convex in a paraxial region thereof.

公开(公告)号：US20240069305A1

公开(公告)日：2024-02-29

申请号：US18504213

申请日：2023-11-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin-An CHANG ,  Ming-Ta CHOU ,  Shu-Yun YANG ,  Cheng-Feng LIN

IPC: G02B7/09 ,  G02B7/02 ,  G02B27/64 ,  G03B5/00 ,  G03B13/36 ,  G03B30/00

CPC classification number: G02B7/09 ,  G02B7/021 ,  G02B27/646 ,  G03B5/00 ,  G03B13/36 ,  G03B30/00 ,  G03B2205/0007

Abstract: An imaging lens assembly module includes an imaging lens element set, a lens carrier and a light blocking structure. The imaging lens element set has an optical axis. At least one lens element of the lens elements is disposed in the lens carrier. The light blocking structure includes a light blocking opening. The optical axis passes through the light blocking opening, and the light blocking opening includes at least two arc portions and a shrinking portion. Each of the arc portions has a first curvature radius for defining a maximum diameter of the light blocking opening. The shrinking portion is connected to the arc portions for forming the light blocking opening into a non-circular shape. The shrinking portion includes at least one protruding arc which extends and shrinks gradually from the shrinking portion to the optical axis, and the protruding arc has a second curvature radius.

公开(公告)号：US20220413191A1

公开(公告)日：2022-12-29

申请号：US17745922

申请日：2022-05-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Shu-Yun YANG ,  Chen-Wei FAN ,  Ming-Ta CHOU

IPC: G02B5/00 ,  G02B7/02 ,  G02B13/00 ,  G02B13/02

Abstract: A light blocking sheet includes a central opening and a plurality of light blocking structures. A central axis passes through the central opening. The light blocking structures surround an inner peripheral surface of the central opening, the light blocking structures are tapered and extended from the central opening towards a direction close to the central axis, and the light blocking structures are for defining a circumscribed circle and an inscribed circle, wherein a plurality of inscribed circle ends of the light blocking structures close to the central axis are contacted with the inscribed circle, and a plurality of circumscribed circle ends of the light blocking structures away from the central axis are contacted with the circumscribed circle.

公开(公告)号：US20210389560A1

公开(公告)日：2021-12-16

申请号：US17460427

申请日：2021-08-30

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Che HSUEH ,  Hsin-Hsuan HUANG ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B9/34

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.

公开(公告)号：US20210364731A1

公开(公告)日：2021-11-25

申请号：US17249182

申请日：2021-02-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin-An CHANG ,  Ming-Ta CHOU ,  Shu-Yun YANG ,  Cheng-Feng LIN

IPC: G02B7/09 ,  G02B7/02 ,  G03B13/36 ,  G02B27/64 ,  G03B5/00 ,  G03B30/00

Abstract: An imaging lens assembly module includes an imaging lens element set, a lens carrier and a light blocking structure. The imaging lens element set has an optical axis. At least one lens element of the lens elements is disposed in the lens carrier. The light blocking structure includes a light blocking opening. The optical axis passes through the light blocking opening, and the light blocking opening includes at least two arc portions and a shrinking portion. Each of the arc portions has a first curvature radius for defining a maximum diameter of the light blocking opening. The shrinking portion is connected to the arc portions for forming the light blocking opening into a non-circular shape. The shrinking portion includes at least one protruding arc which extends and shrinks gradually from the shrinking portion to the optical axis, and the protruding arc has a second curvature radius.

公开(公告)号：US20210364725A1

公开(公告)日：2021-11-25

申请号：US17203926

申请日：2021-03-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin-An CHANG ,  Ming-Ta CHOU ,  Shu-Yun YANG ,  Cheng-Feng LIN ,  Hsiang-Chi TANG

IPC: G02B7/02 ,  G02B13/00 ,  G02B1/04 ,  G03B17/17 ,  G03B11/04

Abstract: An imaging lens assembly module includes an imaging lens element set, a lens carrier and a light blocking structure. The imaging lens element set has an optical axis. At least one lens element of the lens elements is disposed in the lens carrier. The light blocking structure includes a light blocking opening. The optical axis passes through the light blocking opening, and the light blocking opening includes at least two arc portions and a shrinking portion. Each of the arc portions has a first curvature radius for defining a maximum diameter of the light blocking opening. The shrinking portion is connected to the arc portions for forming the light blocking opening into a non-circular shape. The shrinking portion includes at least one protruding arc which extends and shrinks gradually from the shrinking portion to the optical axis, and the protruding arc has a second curvature radius.

公开(公告)号：US20210141193A1

公开(公告)日：2021-05-13

申请号：US17125769

申请日：2020-12-17

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B13/18 ,  G02B13/14 ,  G02B9/34

Abstract: An electronic device includes a lens system including four lens elements. the four lens elements are, in order from an outer side to an inner side, a first lens element, a second lens element, a third lens element and a fourth lens element. The second lens element has negative refractive power. The fourth lens element has positive refractive power. At least one surface of the four lens elements has at least one inflection point. A projection device and a detecting module of the electronic device including the lens system are also disclosed.

公开(公告)号：US20190146186A1

公开(公告)日：2019-05-16

申请号：US15951912

申请日：2018-04-12

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Cheng-Yuan LIAO ,  Shu-Yun YANG ,  Kuo-Jui WANG

IPC: G02B13/00 ,  G02B9/60 ,  G02B27/00 ,  G02B13/04

Abstract: An optical imaging lens assembly includes five 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 and a fifth lens element. The first lens element has an image-side surface being concave 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 third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element has negative refractive power.

公开(公告)号：US20180252897A1

公开(公告)日：2018-09-06

申请号：US15634781

申请日：2017-06-27

Applicant: LARGAN Precision Co., Ltd.

Inventor： Chun-Che HSUEH ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B9/62 ,  H04N5/225

Abstract: An optical imaging lens system 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 has negative refractive power. The fourth lens element has an image-side surface being convex in a paraxial region thereof. The fifth lens element has positive refractive power. The sixth lens element has an object-side surface being convex in a paraxial region thereof.

公开(公告)号：US20180203207A1

公开(公告)日：2018-07-19

申请号：US15611101

申请日：2017-06-01

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Chun-Yen CHEN ,  Shu-Yun YANG

IPC: G02B13/00 ,  G02B9/62

CPC classification number: G02B13/0045 ,  G02B13/16

Abstract: An optical image 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 second lens element with negative 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 third lens element has positive refractive power. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has negative refractive power.