公开(公告)号：US10222586B2

公开(公告)日：2019-03-05

申请号：US15786691

申请日：2017-10-18

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Feng Lin ,  Chun-Hua Tsai ,  Ming-Ta Chou

IPC: G02B13/00 ,  G02B9/04 ,  G02B1/04 ,  G02B7/02 ,  G02B9/60 ,  G02B5/00

Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.

公开(公告)号：US20180039047A1

公开(公告)日：2018-02-08

申请号：US15786691

申请日：2017-10-18

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Feng Lin ,  Chun-Hua Tsai ,  Ming-Ta Chou

IPC: G02B13/00 ,  G02B7/02 ,  G02B9/60 ,  G02B9/04 ,  G02B1/04 ,  G02B5/00

CPC classification number: G02B13/0045 ,  G02B1/041 ,  G02B5/005 ,  G02B7/021 ,  G02B7/022 ,  G02B9/04 ,  G02B9/60

Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.

公开(公告)号：US09823447B2

公开(公告)日：2017-11-21

申请号：US15331966

申请日：2016-10-24

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Feng Lin ,  Chun-Hua Tsai ,  Ming-Ta Chou

IPC: G02B9/04 ,  G02B13/00 ,  G02B1/04 ,  G02B7/02 ,  G02B9/60 ,  G02B5/00

CPC classification number: G02B13/0045 ,  G02B1/041 ,  G02B5/005 ,  G02B7/021 ,  G02B7/022 ,  G02B9/04 ,  G02B9/60

Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.

公开(公告)号：US09612437B1

公开(公告)日：2017-04-04

申请号：US14851773

申请日：2015-09-11

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta Chou ,  Cheng-Feng Lin

IPC: G02B27/00 ,  G02B7/02 ,  G02B13/00 ,  H04N5/225

CPC classification number: G02B27/0018 ,  G02B5/208 ,  G02B7/021 ,  G02B7/022 ,  G02B13/001

Abstract: An optical lens module includes a lens assembly and a plastic barrel. The lens assembly includes a plurality of lens elements and is disposed in the plastic barrel. The plastic barrel includes an object-end portion, an image-end portion, an outer tube portion, an inner tube portion and at least one reflection reduction area. The image-end portion includes an image-end opening. The inner tube portion includes a plurality of parallel inner surfaces and a plurality of inclined inner surfaces, wherein the parallel inner surfaces are parallel to the central axis, and each of the inclined inner surfaces has an angle with the central axis. The reflection reduction area is disposed on one of the inclined inner surfaces closest to the image-end opening, wherein the reflection reduction area and the plastic barrel are integrally formed by an injection molding method.

公开(公告)号：US20160139359A1

公开(公告)日：2016-05-19

申请号：US14592949

申请日：2015-01-09

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Feng Lin ,  Chun-Hua Tsai ,  Ming-Ta Chou

IPC: G02B9/04

CPC classification number: G02B13/0045 ,  G02B1/041 ,  G02B5/005 ,  G02B7/021 ,  G02B7/022 ,  G02B9/04 ,  G02B9/60

Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.

公开(公告)号：US12174451B2

公开(公告)日：2024-12-24

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

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：US11994736B2

公开(公告)日：2024-05-28

申请号：US17144214

申请日：2021-01-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Yu-Chen Lai ,  Ming-Ta Chou ,  Cheng-Feng Lin ,  Ming-Shun Chang

IPC: G02B7/02 ,  G02B5/00 ,  G02B13/00 ,  H04N5/225 ,  H04N23/54 ,  H04N23/55

CPC classification number: G02B7/021 ,  G02B5/003 ,  G02B13/004 ,  H04N23/54 ,  H04N23/55

Abstract: An imaging lens assembly has an optical axis and includes an annular structure located on an object side of the imaging lens assembly and surrounds the optical axis. The annular structure is located on an object side of the imaging lens assembly, surrounds the optical axis, and includes a first through hole, a second through hole, a first frustum surface, a second frustum surface and a third frustum surface. The first through hole is disposed on an object side of the annular structure, and the second through hole is disposed on an image side of the first through hole. The first frustum surface is disposed on the image side of the first through hole. The second frustum surface is disposed on an object side of the second through hole. The third frustum surface is disposed on an image side of the second through hole.

公开(公告)号：US11971539B2

公开(公告)日：2024-04-30

申请号：US17935596

申请日：2022-09-27

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Feng Lin ,  Wei-Hung Weng ,  Ming-Ta Chou

IPC: G02B27/00 ,  G02B7/02 ,  G02B13/00

CPC classification number: G02B27/0018 ,  G02B7/021 ,  G02B7/025 ,  G02B13/004 ,  G02B13/0055

Abstract: An annular optical element includes an outer annular surface, an inner annular surface, a first side surface, a second side surface and a plurality of strip-shaped wedge structures. The outer annular surface surrounds a central axis of the annular optical element and includes at least two shrunk portions. The first side surface connects the outer annular surface and the inner annular surface. The second side surface connects the outer annular surface and the inner annular surface, wherein the second side surface is disposed correspondingly to the first side surface. The strip-shaped wedge structures are disposed on the inner annular surface, wherein each of the strip-shaped wedge structures is disposed along a direction from the first side surface towards the second side surface and includes an acute end and a tapered portion connecting the inner annular surface and the acute end.

公开(公告)号：US11914217B2

公开(公告)日：2024-02-27

申请号：US16935362

申请日：2020-07-22

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Jyun-Jia Cheng ,  Lin-An Chang ,  Ming-Ta Chou ,  Cheng-Feng Lin

IPC: G02B7/02 ,  G02B13/18

CPC classification number: G02B7/022 ,  G02B7/021 ,  G02B13/18

Abstract: An imaging lens assembly has an optical axis, and includes a plastic carrier element and an imaging lens element set. The plastic carrier element includes an object-side surface, an image-side surface, an outer surface and an inner surface. The object-side surface includes an object-side opening. The image-side surface includes an image-side opening. The inner surface is connected to the object-side opening and the image-side opening. The imaging lens element set is disposed in the plastic carrier element, and includes at least three lens elements, each of at least two adjacent lens elements of the lens elements includes a first axial assembling structure, the first axial assembling structures are corresponding to and connected to each other. A solid medium interval is maintained between the adjacent lens elements and the inner surface. The solid medium interval is directly contacted with the adjacent lens elements and the inner surface.

公开(公告)号：US11143798B2

公开(公告)日：2021-10-12

申请号：US16535150

申请日：2019-08-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Ming-Ta Chou ,  Cheng-Feng Lin

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

Abstract: The present disclosure provides a dual-molded circular optical element including an outer plastic peripheral portion and an inner sheet portion. The outer plastic peripheral portion locates at an outer annular surface of the circular optical element. The inner sheet portion is enclosed in the outer plastic peripheral portion, and the inner sheet portion forms a minimal central opening of the circular optical element. Two sides of the outer plastic peripheral portion are disposed with a flat plane, and each of the flat planes is perpendicular to a central axis of the circular optical element.