公开(公告)号：US20240411117A1

公开(公告)日：2024-12-12

申请号：US18225636

申请日：2023-07-24

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Tzu-Chieh KUO

IPC: G02B15/14 ,  G02B13/00

Abstract: An optical photographing lens includes two lens groups including six lens elements. The two lens groups are, in order from an object side to an image side, a first and a second lens groups. The six lens elements are, in order from the object side to the image side, a first lens element through a sixth lens element. A focal length adjusting process is performed by changing an axial distance between the lens groups for varying a focal length of the optical photographing lens. The second lens group moves relative to the first lens group during the focal length adjusting process. At least one lens surface of the optical photographing lens has at least one inflection point always located within an optically effective area during the focal length adjusting process. The second lens element has negative refractive power.

公开(公告)号：US20240280789A1

公开(公告)日：2024-08-22

申请号：US18136307

申请日：2023-04-18

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Chun-Yen CHEN ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/64 ,  H04N23/55

CPC classification number: G02B13/0045 ,  G02B9/64 ,  H04N23/55

Abstract: An imaging lens system includes seven lens elements which are, in order from an object side to an image side along an optical path, a first lens element through a seventh lens element. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The image-side surface of the sixth lens element is concave in a paraxial region thereof. The object-side surface of the seventh 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 of the seven lens elements has at least one inflection point in an off-axis region thereof.

公开(公告)号：US20230408795A1

公开(公告)日：2023-12-21

申请号：US17894104

申请日：2022-08-23

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Pin-Yen CHU ,  Kuan-Ting YEH ,  Chun-Yen CHEN ,  Tzu-Chieh KUO

IPC: G02B9/64

CPC classification number: G02B9/64

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

公开(公告)号：US20220091395A1

公开(公告)日：2022-03-24

申请号：US17383184

申请日：2021-07-22

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Hsin-Hsuan HUANG ,  Kuan-Ting YEH ,  Kuo-Jui WANG ,  Yu-Tai TSENG

IPC: G02B13/00 ,  G02B9/60 ,  G02B9/62 ,  G02B27/64 ,  G03B5/00 ,  H04N5/225

Abstract: An electronic device includes at least two image capturing units which face the same side. The at least two image capturing units include a first image capturing unit and a second image capturing unit. The first image capturing unit includes an optical image system and a first image sensor. The optical image system includes a first lens element and an image surface. The first image sensor is disposed on the image surface of the optical image system thereof and has a first resolution of at least 60 megapixels. The second image capturing unit includes an optical image system and a second image sensor. The optical image system includes a first lens element and an image surface. The second image sensor is disposed on the image surface of the optical image system thereof and has a second resolution of at least 40 megapixels.

公开(公告)号：US20210165193A1

公开(公告)日：2021-06-03

申请号：US17166178

申请日：2021-02-03

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G02B9/64

Abstract: A photographing optical lens assembly includes seven lens elements, the seven 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 and a seventh lens element. Each of the seven lens elements includes an object-side surface facing towards the object side and an image-side surface facing towards the image side. The image-side surface of the seventh lens element is concave in a paraxial region thereof and includes at least one inflection point in an off-axis region thereof.

公开(公告)号：US20200326507A1

公开(公告)日：2020-10-15

申请号：US16427173

申请日：2019-05-30

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Chun-Che HSUEH ,  Kuan-Ting YEH ,  Tzu-Chieh KUO

IPC: G02B13/00 ,  G02B9/12 ,  G06K9/00

Abstract: An optical photographing lens assembly includes three lens elements which are, in order from an object side to an image side: a first lens element, a second lens element and a third lens element. Each of the three lens elements of the optical photographing lens assembly 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 concave in a paraxial region thereof, the object-side surface of the first lens element is aspheric and has at least one inflection point, and the object-side surface of the first lens element has at least one critical point in an off-axis region thereof. The optical photographing lens assembly has a total of three lens elements.

公开(公告)号：US20190353874A1

公开(公告)日：2019-11-21

申请号：US16214283

申请日：2018-12-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Hsin-Hsuan HUANG

IPC: G02B13/00 ,  G02B9/64

Abstract: A photographing optical lens assembly includes seven lens elements, the seven 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 and a seventh lens element. Each of the seven lens elements includes an object-side surface facing towards the object side and an image-side surface facing towards the image side. The image-side surface of the seventh lens element is concave in a paraxial region thereof and includes at least one inflection point in an off-axis region thereof.

公开(公告)号：US20190250380A1

公开(公告)日：2019-08-15

申请号：US16394168

申请日：2019-04-25

Applicant: LARGAN PRECISION CO., LTD.

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

IPC: G02B13/00 ,  G02B13/04 ,  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：US20190064484A1

公开(公告)日：2019-02-28

申请号：US15867587

申请日：2018-01-10

Applicant: LARGAN PRECISION CO.,LTD.

Inventor： Kuan-Ting YEH ,  Hung-Shuo CHEN ,  Chien-Hsun WU ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B27/00 ,  G02B9/60 ,  G02B13/18

CPC classification number: G02B13/0045 ,  G02B9/60 ,  G02B13/18 ,  G02B27/0025

Abstract: An imaging lens system 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. At least one of an object-side surface and an image-side surface of the fifth lens element has at least one inflection point. The object-side surface and the image-side surface of the fifth lens element are both aspheric.

公开(公告)号：US20250004248A1

公开(公告)日：2025-01-02

申请号：US18232733

申请日：2023-08-10

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Po-Wei CHEN ,  Kuan-Ting YEH ,  Cheng-Yu TSAI

IPC: G02B13/00 ,  G02B9/62

Abstract: An optical photographing 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. 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 positive refractive power. The fourth lens element has positive refractive power. The image-side surface of the fourth lens element is convex in a paraxial region thereof. The image-side surface of the fifth lens element is concave in a paraxial region thereof. The sixth lens element has negative refractive power. The object-side surface of the sixth lens element is convex in a paraxial region thereof.