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公开(公告)号：US20180081144A1
公开(公告)日：2018-03-22
申请号：US15823405
申请日：2017-11-27
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：US20240159986A1
公开(公告)日：2024-05-16
申请号：US18504228
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：US20230350152A1
公开(公告)日：2023-11-02
申请号：US18217305
申请日：2023-06-30
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：US20230341649A1
公开(公告)日：2023-10-26
申请号：US18342782
申请日：2023-06-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , Ming-Ta CHOU
CPC classification number: G02B7/021 , G02B1/041 , G02B1/10 , G02B13/0045 , G02B1/14
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：US20230058946A1
公开(公告)日：2023-02-23
申请号：US17814046
申请日：2022-07-21
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chen-Wei FAN , Ming-Ta CHOU , Chien-Pang CHANG , Cheng-Feng LIN , Kuo-Chiang CHU
Abstract: An optical lens assembly includes a glass lens element. The glass lens element has a refractive power, an optical surface of the glass lens element is non-planar, an anti-reflective membrane layer is formed on the optical surface, and the anti-reflective membrane layer includes a nanostructure layer and a structure connection film. The nanostructure layer has a plurality of ridge-like protrusions extending non-directionally from the optical surface, and a material of the nanostructure layer includes aluminum oxide. The structure connection film is disposed between the optical surface and the nanostructure layer, the structure connection film includes at least one silicon dioxide layer, the at least one silicon dioxide layer contacts a bottom of the nanostructure layer physically, and a thickness of the at least one silicon dioxide layer is greater than or equal to 20 nm and less than or equal to 150 nm.
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Patent Agency Ranking
公开(公告)号：US20220373775A1
公开(公告)日：2022-11-24
申请号：US17881400
申请日：2022-08-04
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , Lin An CHANG , Ming-Ta CHOU
Abstract: A camera module includes an imaging lens system, an image sensor and a plurality of light-folding elements. The imaging lens system is configured to focus imaging light onto an image surface. The image sensor is disposed on the image surface. The plurality of light-folding elements includes at least one image-side light-folding element disposed on an image side of the imaging lens system, and each of the light-folding elements is configured to fold the imaging light from an entrance optical path thereof to an exit optical path thereof. At least one light-shielding mechanism is arranged on at least one of the entrance light path and the exit light path of the at least one image-side light-folding element. The at least one light-shielding mechanism has a minimal opening, and the minimal opening surrounds the imaging light in the at least one of the entrance optical path and the exit optical path.
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公开(公告)号：US20220196993A1
公开(公告)日：2022-06-23
申请号：US17359168
申请日：2021-06-25
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Min-Chun LIAO , Lin An CHANG , Ming-Ta CHOU , Jyun-Jia CHENG , Cheng-Feng LIN , Ming-Shun CHANG
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：US20210382268A1
公开(公告)日：2021-12-09
申请号：US17410947
申请日：2021-08-24
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta CHOU , Cheng-Feng LIN , Wei-Hung WENG
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：US20210364452A1
公开(公告)日：2021-11-25
申请号：US17019421
申请日：2020-09-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Lin-An CHANG , Ming-Ta CHOU , Cheng-Feng LIN , Liang-Chieh WENG , Ming-Shun CHANG
IPC: G01N21/958 , G02B1/04 , B29D11/00 , G02B3/04
Abstract: A plastic lens element includes an optical effective portion and a peripheral portion. The peripheral portion surrounds the optical effective portion and includes a peripheral surface and an optical inspecting structure. The optical inspecting structure is disposed between the optical effective portion and the peripheral surface and includes a first optical inspecting surface and a second optical inspecting surface. The first optical inspecting surface and the second optical inspecting surface are disposed on two sides of the peripheral portion respectively and correspond to each other.
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公开(公告)号：US20200247090A1
公开(公告)日：2020-08-06
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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