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21.发明申请公开(公告)号：US20200292808A1
公开(公告)日：2020-09-17
申请号：US16885352
申请日：2020-05-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Cheng-Feng LIN
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.
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公开(公告)号：US20190219790A1
公开(公告)日：2019-07-18
申请号：US16360159
申请日：2019-03-21
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , Wei-Hung WENG , Ming-Ta CHOU
CPC classification number: G02B7/021 , G02B7/022 , G02B13/001 , G02B13/0045
Abstract: A plastic barrel includes an object-end portion, an image-end portion, an inner tube portion and a plurality of protrusions. The object-end portion includes an outer object-end surface, an object-end hole and an inner annular object-end surface. One side of the inner annular object-end surface is connected to the outer object-end surface and surrounds the object-end hole. The image-end portion includes an outer image-end surface, an image-end opening and an inner annular image-end surface. The inner annular image-end surface is connected to the outer image-end surface and surrounds the image-end opening. The inner tube portion connects the object-end portion and the image-end portion and includes a plurality of inclined surfaces. The protrusions are disposed at least on one of the inner annular object-end surface, the inner annular image-end surface and the inclined surfaces, wherein the protrusions are regularly arranged around the central axis of the plastic barrel.
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23.发明申请公开(公告)号：US20180341048A1
公开(公告)日：2018-11-29
申请号：US15677103
申请日：2017-08-15
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Cheng-Feng LIN
CPC classification number: G02B5/005 , G02B7/006 , G02B7/021 , G02B13/001
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.
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24.发明申请公开(公告)号：US20180335607A1
公开(公告)日：2018-11-22
申请号：US15861859
申请日：2018-01-04
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , Ming-Ta CHOU
Abstract: An imaging lens set includes three plastic lens elements, which are a first lens element, a second lens element and a third lens element, and a light blocking sheet. The first lens element includes a first flat abutting portion and a first conical surface. The second lens element includes a second flat abutting portion, a second conical surface, a fourth flat abutting portion and a fourth conical surface. The third lens element includes a third flat abutting portion and a third conical surface. The first flat abutting portion is abutted with the second flat abutting portion, the first conical surface contacts with the second conical surface, and the third conical surface contacts with the fourth conical surface. The light blocking sheet is abutted with the third flat abutting portion and the fourth flat abutting portion, respectively.
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公开(公告)号：US20180239109A1
公开(公告)日：2018-08-23
申请号：US15615923
申请日：2017-06-07
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Cheng-Feng LIN
CPC classification number: G02B13/002 , G02B5/003 , G02B7/021 , G02B27/0018
Abstract: An annular optical element assembly having a central axis includes a first annular optical element, a second annular optical element and a light blocking sheet. The first annular optical element includes a first central opening, a first axial connecting structure and a first inner receiving surface. The second annular optical element includes a second central opening, a second axial connecting structure and a second inner receiving surface. The second inner receiving surface surrounds the second central opening, wherein the second inner receiving surface is closer to the central axis than a second axial connecting surface is to the central axis, the second inner receiving surface is vertical to the central axis, and the first inner receiving surface and the second inner receiving surface are corresponding and not connected to each other for defining a receiving space.
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Patent Agency Ranking
公开(公告)号：US20150253569A1
公开(公告)日：2015-09-10
申请号：US14265350
申请日：2014-04-29
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN
CPC classification number: G02B27/0018 , G02B5/003 , G02B5/005 , G02B7/021 , G02B13/001
Abstract: An annular optical spacer includes an outer annular surface, an inner annular surface, a first side surface, a second side surface and a plurality of protruding structures. The inner annular surface surrounds a central axis of the annular optical spacer and is opposite to the outer annular surface. The first side surface connects the outer annular surface with the inner annular surface. The second side surface connects the outer annular surface with the inner annular surface and is opposite to the first side surface. The protruding structures are regularly disposed on the inner annular surface. Each of the protruding structures extends along a direction from the first side surface to the second side surface and is integrated with the inner annular surface.
Abstract translation: 环形光学间隔件包括外环形表面，内环形表面，第一侧表面，第二侧表面和多个突出结构。 内环形表面围绕环形光学间隔件的中心轴线并且与外环形表面相对。 第一侧表面将外环形表面与内环形表面连接。 第二侧表面将外环形表面与内环形表面连接并且与第一侧表面相对。 突出结构规则地设置在内环形表面上。 每个突出结构沿着从第一侧表面到第二侧表面的方向延伸并且与内环形表面一体化。
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公开(公告)号：US20240310607A1
公开(公告)日：2024-09-19
申请号：US18604592
申请日：2024-03-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Heng-Yi SU , Ming-Ta CHOU , Cheng-Feng LIN
IPC: G02B13/00
CPC classification number: G02B13/0045
Abstract: An imaging lens assembly has an optical axis, and includes a plurality of optical elements. The optical axis passes through the optical elements, and the optical elements include a radial reduction lens element and a radial reduction light blocking element. The radial reduction lens element includes an optical effective portion and a peripheral portion. The peripheral portion is disposed around the optical effective portion along a circumferential direction of the optical axis. The radial reduction light blocking element includes a central opening and a radial reduction part. The optical axis passes through the central opening. The radial reduction part is reduced towards the optical axis along a direction vertical to the optical axis, so that the central opening is non-circular. The radial reduction part includes a plurality of light blocking structures. The light blocking structures are arranged along the direction vertical to the optical axis.
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公开(公告)号：US20240288670A1
公开(公告)日：2024-08-29
申请号：US18142262
申请日：2023-05-02
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Wei-Che TUNG , Lin An CHANG , Ming-Ta CHOU , Cheng-Feng LIN
IPC: G02B13/00
CPC classification number: G02B13/0065 , G03B30/00
Abstract: An optical imaging module includes an imaging lens assembly, an optical path folding element, and a light-blocking element. The imaging lens assembly includes at least one optical lens element. The optical path folding element is disposed at an image side of the imaging lens assembly, and the optical path folding element has a light incident surface, a light exiting surface, and at least one optical reflective surface. The light-blocking element is disposed opposite to the at least one optical reflective surface, and the light-blocking element includes an interval area that maintains a distance from the optical path folding element. The at least one optical reflective surface is an optical total reflection surface configured to totally internally reflect imaging light of the optical imaging module in the optical path folding element. The interval area of the light-blocking element and the optical total reflection surface form an air slit therebetween.
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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
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.
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公开(公告)号：US20230037074A1
公开(公告)日：2023-02-02
申请号：US17854092
申请日：2022-06-30
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chen-Wei FAN , Ming-Ta CHOU , Chien-Pang CHANG , Cheng-Feng LIN , Kuo-Chiang CHU
IPC: G02B9/64
Abstract: An imaging lens assembly includes an imaging lens element assembly, and an optical axis passes through the imaging lens assembly. The imaging lens element assembly includes a plurality of lens elements, and the lens elements includes a first lens element and a second lens element, wherein a refractive index of the first lens element is different from a refractive index of the second lens element. Each of the first lens element and the second lens element includes at least one nanostructure layer and at least one structure connection film. The nanostructure layer is irregularly arranged, the nanostructure layer includes an alumina crystal. The structure connection film is disposed between a surface of the first lens element and the nanostructure layer and between a surface of the second lens element and the nanostructure layer.
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