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公开(公告)号:US09864160B2
公开(公告)日:2018-01-09
申请号:US14802150
申请日:2015-07-17
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Wei-Che Tung , Ming-Ta Chou
CPC classification number: G02B7/026 , G02B7/021 , G02B13/001 , G02B27/0018
Abstract: An annular optical spacer includes a first side portion, a second side portion, an outer annular portion and an inner annular portion. The second side portion is disposed opposite to the first side portion. The outer annular portion connects the first side portion and the second side portion. The inner annular portion connects the first side portion and the second side portion, wherein the inner annular portion is closer to a central axis of the annular optical spacer than the outer annular portion. The inner annular portion includes a plurality of annular grooves, wherein the annular grooves are disposed coaxially to the central axis, and each of the annular grooves includes a plurality of stepped surfaces.
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公开(公告)号:US20170153447A1
公开(公告)日:2017-06-01
申请号:US15429479
申请日:2017-02-10
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Ming-Ta Chou , Cheng-Feng Lin
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.
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公开(公告)号:US20170131513A1
公开(公告)日:2017-05-11
申请号:US14970696
申请日:2015-12-16
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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公开(公告)号:US20160231526A1
公开(公告)日:2016-08-11
申请号:US15098467
申请日:2016-04-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Chun-Hua Tsai , Ming-Ta Chou
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.
Abstract translation: 成像透镜模块包括成像透镜组件和第一光学部件。 成像透镜组件具有光轴并且包括透镜元件。 透镜元件包括非圆形并且设置在透镜元件的中心上的有效光学部分。 第一光学部件具有非圆形开孔。 成像透镜组件的透镜元件的有效光学部分对应于第一光学部件的非圆形开孔。
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公开(公告)号:US11846826B2
公开(公告)日:2023-12-19
申请号:US17249182
申请日:2021-02-23
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:US11815740B2
公开(公告)日:2023-11-14
申请号:US17743495
申请日:2022-05-13
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Ming-Ta Chou
CPC classification number: G02B9/12 , G02B1/041 , G02B5/003 , G02B7/021 , G02B7/022 , G02B13/0035 , G02B13/0045 , G02B27/0018
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:US11796756B2
公开(公告)日:2023-10-24
申请号:US17539265
申请日:2021-12-01
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Ming-Ta Chou , Wei-Hung Weng
IPC: G02B7/02
Abstract: A plastic barrel includes an object-end portion, an image-end portion, a tube portion and a plurality of wedge structures. The object-end portion includes an outer object-end surface, an object-end hole and an inner annular object-end surface. The image-end portion includes an outer image-end surface, an image-end opening and an inner annular image-end surface. The tube portion connects the object-end portion and the image-end portion, and includes a plurality of inclined surfaces. The wedge structures are disposed on at least one surface of the inner annular object-end surface, the inner annular image-end surface and the inclined surfaces, wherein the wedge structures are regularly arranged around the central axis, and each of the wedge structures includes an acute end and a tapered section. The tapered section connects the surface, which the wedge structure is disposed on, and the acute end.
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公开(公告)号:US11774830B2
公开(公告)日:2023-10-03
申请号:US17680435
申请日:2022-02-25
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Lin-An Chang , Hsiang-Chi Tang
Abstract: A plastic barrel, which surrounds a central axis, includes an object-side portion and a tubular portion. The object-side portion includes an object-side opening and a reverse inclined structure. The reverse inclined structure surrounds the object-side opening and includes a reverse inclined surface and at least one annular concave structure. The at least one annular concave structure is disposed on an object side of the reverse inclined surface and recessed from the object-side opening along a direction away from the central axis, wherein a sectional surface of the at least one annular concave structure passing through the central axis includes a valley point and two concave ends, and the two concave ends are disposed on an object side and an image side of the valley point, respectively. The tubular portion is connected to the object-side portion and extends to the image side.
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公开(公告)号:US11353777B2
公开(公告)日:2022-06-07
申请号:US16877544
申请日:2020-05-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Lin-An Chang , Hsiang-Chi Tang
Abstract: A plastic barrel, which surrounds a central axis, includes an object-side portion and a tubular portion. The object-side portion includes an object-side opening and a reverse inclined structure. The reverse inclined structure surrounds the object-side opening and includes a reverse inclined surface and at least one annular concave structure. The at least one annular concave structure is disposed on an object side of the reverse inclined surface and recessed from the object-side opening along a direction away from the central axis, wherein a sectional surface of the at least one annular concave structure passing through the central axis includes a valley point and two concave ends, and the two concave ends are disposed on an object side and an image side of the valley point, respectively. The tubular portion is connected to the object-side portion and extends to the image side.
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公开(公告)号:US11254098B2
公开(公告)日:2022-02-22
申请号:US16857262
申请日:2020-04-24
Applicant: LARGAN PRECISION CO., LTD.
Inventor: Cheng-Feng Lin , Ming-Ta Chou
Abstract: A composite light blocking sheet includes a first surface layer, a second surface layer, an inside substrate layer and a central axis. The first surface layer has a first opening and a first outer surface connected to the first opening. The second surface layer has a second opening and a second outer surface connected to the second opening. The inside substrate layer has a substrate opening and is disposed between the first surface layer and the second surface layer and connects the first surface layer and the second surface layer. The central axis is coaxial with the first opening, the second opening and the substrate opening. More than 95% of the first outer surface has a first gloss being GU1, more than 95% of the second outer surface has a second gloss being GU2, and the first gloss GU1 and the second gloss GU2 satisfy specific conditions.
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