公开(公告)号：US20250067963A1

公开(公告)日：2025-02-27

申请号：US18945262

申请日：2024-11-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/64

Abstract: An imaging optical lens system includes eight 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, a seventh lens element and an eighth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex critical point in an off-axis region thereof.

公开(公告)号：US20240385415A1

公开(公告)日：2024-11-21

申请号：US18208723

申请日：2023-06-12

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Cheng-Yu TSAI

IPC: G02B13/00 ,  G02B13/02

Abstract: A photographing 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 facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The third lens element has negative refractive power, the object-side surface of the third lens element is convex in a paraxial region thereof, and the image-side surface of the third lens element is concave in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the photographing lens assembly is aspheric.

公开(公告)号：US20240192468A1

公开(公告)日：2024-06-13

申请号：US18581532

申请日：2024-02-20

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/34

CPC classification number: G02B13/004 ,  G02B9/34

Abstract: An image capturing optical lens system includes four 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 and a fourth lens element. The first lens element has an object-side surface being convex in a paraxial region thereof. The third lens element with positive 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. The fourth lens element has negative refractive power.

公开(公告)号：US20220382018A1

公开(公告)日：2022-12-01

申请号：US17506391

申请日：2021-10-20

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/64 ,  G02B27/00

Abstract: An imaging optical lens system includes eight 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, a seventh lens element and an eighth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex critical point in an off-axis region thereof.

公开(公告)号：US20180106987A1

公开(公告)日：2018-04-19

申请号：US15673615

申请日：2017-08-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen LIN ,  Chun-Yen CHEN ,  Yu-Tai TSENG ,  Kuan-Ting YEH ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G02B13/18 ,  G02B9/62 ,  G02B27/00

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  G02B13/18 ,  G02B27/0025 ,  H04N5/2254

Abstract: An optical imaging module includes six lens elements, the six lens elements being, 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 second lens element has an image-side surface being concave. The third lens element has an image-side surface being convex. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave and an image-side surface being convex. The sixth lens element has an image-side surface being concave, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one inflection point.

公开(公告)号：US20240264410A1

公开(公告)日：2024-08-08

申请号：US18432213

申请日：2024-02-05

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Cheng-Yu TSAI

IPC: G02B13/00 ,  G02B9/64

CPC classification number: G02B13/0045 ,  G02B9/64

Abstract: A photographing system lens assembly includes eight lens elements, the eight lens elements being, 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, a sixth lens element, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface towards the object side and an image-side surface towards the image side.

公开(公告)号：US20240118522A1

公开(公告)日：2024-04-11

申请号：US18532974

申请日：2023-12-07

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Po-Lun HSU ,  Wei-Yu CHEN ,  Kuan-Ting YEH ,  Ssu-Hsin LIU

IPC: G02B13/00 ,  G02B9/62

CPC classification number: G02B13/0045 ,  G02B9/62

Abstract: A photographing lens assembly includes, in order from an object side to an image side: a first, a second, a third, a fourth, a fifth and a sixth lens elements. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein the object-side surface has at least one convex critical point in an off-axis region thereof. The third lens element has an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth 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 sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface has at least one convex critical point in an off-axis region thereof.

公开(公告)号：US20220404584A1

公开(公告)日：2022-12-22

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: G02B13/00 ,  G02B9/62 ,  G02B27/00 ,  G02B13/02

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：US20220187578A1

公开(公告)日：2022-06-16

申请号：US17206078

申请日：2021-03-18

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G03B17/17 ,  G02B9/60

Abstract: An optical 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. Each of the five lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is convex in a paraxial region thereof. The image-side surface of the third lens element is concave in a paraxial region thereof. The object-side surface of the fourth lens element is concave in a paraxial region thereof, and the image-side surface of the fourth lens element is convex in a paraxial region thereof.

公开(公告)号：US20180239114A1

公开(公告)日：2018-08-23

申请号：US15646978

申请日：2017-07-11

Applicant: LARGAN Precision Co., Ltd.

Inventor： Chun-Che HSUEH ,  Wei-Yu CHEN ,  Chun-Shan CHEN ,  Hsuan-Chin HUANG ,  Kuan-Ting YEH

IPC: G02B13/00 ,  G02B9/60 ,  H04N5/225

CPC classification number: G02B13/0045 ,  G02B9/60 ,  H04N5/2254

Abstract: An optical photographing lens assembly includes five lens elements, 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 with positive refractive power has a convex object-side surface in a paraxial region thereof. The second lens element with negative refractive power has a convex object-side surface and a concave image-side surface in a paraxial region thereof. The fourth lens element with positive refractive power has a convex image-side surface in a paraxial region thereof. The fifth lens element with negative refractive power has a concave image-side surface in a paraxial region thereof, wherein the image-side surface of the fifth lens element has at least one convex critical point in an off-axial region thereof, and two surfaces of the fifth lens element are both aspheric.