公开(公告)号：US20250116847A1

公开(公告)日：2025-04-10

申请号：US18987194

申请日：2024-12-19

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/62 ,  H04N23/54

Abstract: An optical photographing lens assembly includes, 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 with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being convex in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are both aspheric. The sixth lens element with refractive power has an object-side surface and an image-side surface being both aspheric. The optical photographing lens assembly has a total of six lens elements with refractive power.

公开(公告)号：US20250044551A1

公开(公告)日：2025-02-06

申请号：US18922667

申请日：2024-10-22

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Shao-Yu CHANG ,  Wei-Yu CHEN

IPC: G02B9/60 ,  G02B3/04 ,  G02B7/00 ,  G02B9/12 ,  G02B17/02

Abstract: An imaging optical lens assembly includes five optical elements with refractive power. The five optical elements, in order from an object side to an image side along an optical path, are a first optical element, a second optical element, a third optical element, a fourth optical element, and a fifth optical element. The first optical element has an object-side surface being concave in a paraxial region thereof. The third optical element has negative refractive power.

公开(公告)号：US20240134163A1

公开(公告)日：2024-04-25

申请号：US18399269

申请日：2023-12-28

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen LIN ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/62 ,  G02B13/04 ,  H04N23/69

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  H04N23/69

Abstract: An image capturing lens assembly includes, 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 with negative refractive power has an image-side surface being concave in a paraxial region thereof. The second and third lens elements have refractive power. 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. The sixth lens element with 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 image capturing lens assembly has a total of six lens elements with refractive power.

公开(公告)号：US20240027738A1

公开(公告)日：2024-01-25

申请号：US18479908

申请日：2023-10-03

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Lin-Yao LIAO ,  Dung-Yi HSIEH ,  Wei-Yu CHEN

IPC: G02B13/04 ,  H01J37/32 ,  H01L21/02 ,  H01L21/263 ,  H01L21/3065 ,  H01L21/311

CPC classification number: G02B13/04 ,  H01J37/32862 ,  H01L21/02085 ,  H01L21/2633 ,  H01L21/3065 ,  H01L21/02046 ,  H01L21/31116

Abstract: An optical image capturing system comprising, 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. The first lens element with negative refractive power has a concave image-side surface. The second lens element, the third lens element and the fourth lens element have refractive power. The fifth lens element has refractive power. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region and includes at least one convex shape in an off-axial region, wherein the surfaces thereof are aspheric. The seventh lens element with refractive power has an image-side surface being concave in a paraxial region and includes at least one convex shape in an off-axial region, wherein the surfaces thereof are aspheric.

公开(公告)号：US20220350117A1

公开(公告)日：2022-11-03

申请号：US17810693

申请日：2022-07-05

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Dung-Yi HSIEH ,  Chun-Che HSUEH ,  Wei-Yu CHEN

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

Abstract: An imaging optical system includes, 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 refractive power has an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region. The second lens element with positive refractive power has an image-side surface being convex in a paraxial region. The third lens element with negative refractive power has an image-side surface being concave in a paraxial region. The fourth lens element with positive refractive power has an image-side surface being convex in a paraxial region. The fifth lens element with negative refractive power has an image-side surface being concave in a paraxial region and having a convex shape in an off-axial region thereof.

公开(公告)号：US20220308320A1

公开(公告)日：2022-09-29

申请号：US17836689

申请日：2022-06-09

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Wei-Yu CHEN

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

Abstract: An optical photographing lens assembly includes, 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 with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being convex in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are both aspheric. The sixth lens element with refractive power has an object-side surface and an image-side surface being both aspheric. The optical photographing lens assembly has a total of six lens elements with refractive power.

公开(公告)号：US20220244495A1

公开(公告)日：2022-08-04

申请号：US17376250

申请日：2021-07-15

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Wei-Yu CHEN

IPC: G02B13/00 ,  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：US20220171171A1

公开(公告)日：2022-06-02

申请号：US17516771

申请日：2021-11-02

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Wei-Yu CHEN

IPC: G02B15/14 ,  G02B9/34 ,  G02B13/00

Abstract: An image lens assembly includes, in order from an object side to an image side along an optical path, a first lens group, a second lens group, a third lens group and a fourth lens group. A total number of lens elements in the image lens assembly is seven. The first lens group includes a first lens element with positive refractive power and a second lens element with negative refractive power. Each of the second lens group and the third lens group includes at least one lens element. The fourth lens group includes a seventh lens element. When the image lens assembly is focusing or zooming, a relative position between the first lens group and an image surface is fixed, a relative position between the fourth lens group and the image surface is fixed, and the second lens group and the third lens group move along the optical axis.

公开(公告)号：US20220035141A1

公开(公告)日：2022-02-03

申请号：US17074372

申请日：2020-10-19

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Kuan-Ting YEH ,  Wei-Yu CHEN

IPC: G02B15/14

Abstract: An image lens assembly includes four lens groups: a first lens group, a second lens group, a third lens group and a fourth lens group along an optical path. The four lens groups include nine lens elements: a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element and a ninth lens element along the optical path. At least one lens element of the image lens assembly has at least one inflection point. At least five lens elements of the image lens assembly are made of plastic material. When focusing or zooming, the first lens group and the fourth lens group stay stationary, while the second lens group and the third lens group move along an optical axis.

公开(公告)号：US20220035131A1

公开(公告)日：2022-02-03

申请号：US17020590

申请日：2020-09-14

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Chun KE ,  Jin Sen WANG ,  Ssu-Hsin LIU ,  Wei-Yu CHEN

IPC: G02B13/00 ,  G02B9/60 ,  G02B27/00 ,  G02B13/02

Abstract: An 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. The first lens element has positive refractive power. The second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The fifth lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.