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公开(公告)号：US20220179290A1
公开(公告)日：2022-06-09
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：US20220082778A1
公开(公告)日：2022-03-17
申请号：US17076673
申请日：2020-10-21
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu Chen LAI , Ming-Ta CHOU , Cheng-Feng LIN
Abstract: An imaging lens system has an optical axis and an image surface through which the optical axis passes. The imaging lens system includes a plastic lens barrel surrounding the optical axis. The plastic lens barrel includes an image-side portion and an object-side aperture through which the optical axis passes, and the image-side portion is located between the image surface and the object-side aperture. The image-side portion includes a protrusive structure surrounding the optical axis and extending towards the image surface. The protrusive structure has an inner surface facing the optical axis, an outer surface disposed opposite to the inner surface and located farther away from the optical axis than the inner surface and a reflection-reducing surface extending towards the image surface and connected to and located between the inner surface and the outer surface. The protrusive structure includes a reflection-reducing structure disposed on the reflection-reducing surface.
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公开(公告)号：US20210088698A1
公开(公告)日：2021-03-25
申请号：US16932928
申请日：2020-07-20
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Cheng-Feng LIN , Po-Lun HSU , Ming-Shun CHANG , Ming-Ching LIN
Abstract: An imaging lens assembly module has an optical axis, and includes at least one plastic lens element, a carrier element and a light absorbing layer. The plastic lens element, in order from a center to a peripheral region thereof, includes an optical effective portion and a peripheral portion. A side of the peripheral portion includes a plurality of step structures interposed between the side of the peripheral portion and a same side of the optical effective portion. The carrier element defines an inner space for disposing the plastic lens element, and includes a tip end minimal opening and a plurality of annular inner walls. The light absorbing layer is disposed on the peripheral portion of the plastic lens element, and the step structures and the at least one of the annular inner walls facing towards the plastic lens element.
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公开(公告)号：US20200158996A1
公开(公告)日：2020-05-21
申请号：US16748874
申请日：2020-01-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , I-Wei LAI , Ming-Ta CHOU
Abstract: An imaging lens assembly includes a plurality of lens elements, wherein at least one of the lens elements is a dual molded lens element. The dual molded lens element includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an effective optical section. The light absorbing portion is located on at least one surface of an object-side surface and an image-side surface of the dual molded lens element, wherein a plastic material and a color of the light absorbing portion are different from a plastic material and a color of the light transmitting portion, and the light absorbing portion includes an opening. The opening is non-circular and disposed correspondingly to the effective optical section.
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15.发明申请公开(公告)号：US20190243091A1
公开(公告)日：2019-08-08
申请号：US16385135
申请日：2019-04-16
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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Patent Agency Ranking
公开(公告)号：US20250147264A1
公开(公告)日：2025-05-08
申请号：US19017929
申请日：2025-01-13
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , Ming-Ta CHOU
Abstract: An imaging lens assembly includes a plastic barrel and a lens set, and the lens set is disposed in the plastic barrel. The plastic barrel includes an object-side outer surface, a first inner surface and a second inner surface. The lens set has an optical axis, and includes, in order from an object side to an image side thereof, at least one plastic lens element and a spacer. A light-absorbing coating is disposed on the plastic lens element. The spacer includes an object-side connecting surface and a relative surface. When the object-side connecting surface is connected with a neighboring object-side optical element, the relative surface is out of touch with the neighboring object-side optical element. There is an overlap between the second inner surface and the relative surface along a direction parallel to the optical axis.
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公开(公告)号：US20240085676A1
公开(公告)日：2024-03-14
申请号：US18518314
申请日：2023-11-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Min-Chun LIAO , Lin An CHANG , Ming-Ta CHOU , Jyun-Jia CHENG , Cheng-Feng LIN , Ming-Shun CHANG
CPC classification number: G02B13/0065 , G02B5/22 , G02B23/08 , G03B17/17
Abstract: A light-folding element includes an object-side surface, an image-side surface, a reflection surface and a connection surface. The reflection surface is configured to reflect imaging light passing through the object-side surface to the image-side surface. The connection surface is connected to the object-side, image-side and reflection surfaces. The light-folding element has a recessed structure located at the connection surface. The recessed structure is recessed from the connection surface an includes a top end portion, a bottom end portion and a tapered portion located between the top end and bottom end portions. The top end portion is located at an edge of the connection surface. The tapered portion has two tapered edges located on the connection surface. The tapered edges are connected to the top end and bottom end portions. A width of the tapered portion decreases in a direction from the top end portion towards the bottom end portion.
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公开(公告)号：US20240085671A1
公开(公告)日：2024-03-14
申请号：US18518334
申请日：2023-11-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Cheng-Feng LIN , Wei-Hung WENG
CPC classification number: G02B13/002 , G02B3/04 , G02B7/026 , G02B27/0018 , G02B27/0025
Abstract: An annular light trapping component includes an inner surface, an outer surface, an object-side surface and an image-side surface. The inner surface includes multiple L-shaped annular grooves. The annular light trapping component includes multiple stripe-shaped structures in the L-shaped annular grooves. The L-shaped annular grooves include an object-side L-shaped annular groove closest to the object-side surface and an image-side L-shaped annular groove closest to the image-side surface. A bottom diameter of the image-side L-shaped annular groove is larger than a bottom diameter of the object-side L-shaped annular groove. Each L-shaped annular groove includes a first side and a second side located between the object-side surface and the image-side surface. The stripe-shaped structures are disposed on the first side or the second side. A degree of inclination between the first side and the central axis is larger than a degree of inclination between the second side and the central axis.
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公开(公告)号：US20220091357A1
公开(公告)日：2022-03-24
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：US20210048733A1
公开(公告)日：2021-02-18
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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