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公开(公告)号：US20230028802A1
公开(公告)日：2023-01-26
申请号：US17523758
申请日：2021-11-10
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Jyun-Jia CHENG , Yu Chen LAI , Ming-Ta CHOU , Cheng-Feng LIN , Chen-Yi HUANG
Abstract: This disclosure provides a lens assembly that has an optical path and includes a lens element and a light-blocking membrane layer. The lens element has an optical portion, and the optical path passes through the optical portion. The light-blocking membrane layer is coated on the lens element and adjacent to the optical portion. The light-blocking membrane layer has a distal side and a proximal side that is located closer to the optical portion than the distal side. The proximal side includes two extension structures and a recessed structure. Each of the extension structures extends along a direction away from the distal side, and the extension structures are not overlapped with each other in a direction in parallel with the optical path. The recessed structure is connected to the extension structures and recessed along a direction towards the distal side.
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公开(公告)号：US20220269043A1
公开(公告)日：2022-08-25
申请号：US17743495
申请日：2022-05-13
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：US20210364731A1
公开(公告)日：2021-11-25
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
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：US20210364725A1
公开(公告)日：2021-11-25
申请号：US17203926
申请日：2021-03-17
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Lin-An CHANG , Ming-Ta CHOU , Shu-Yun YANG , Cheng-Feng LIN , Hsiang-Chi TANG
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：US20210333518A1
公开(公告)日：2021-10-28
申请号：US17192919
申请日：2021-03-05
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Lin-An CHANG , Ming-Ta CHOU , Cheng-Feng LIN , Ming-Shun CHANG
Abstract: An imaging lens element assembly includes a dual molded lens element. The dual molded lens element includes a transparent portion, a light absorbing portion and a step structure. The transparent portion, in order from a center to a peripheral region, includes an optical effective area and a transparent peripheral area, wherein an optical axis of the imaging lens element assembly passes through the optical effective area, and the transparent peripheral area surrounds the optical effective area. The light absorbing portion surrounds the optical effective area and is disposed on an object side of the transparent peripheral area and includes an object-end surface and an outer inclined surface. The object-end surface faces towards an object side of the light absorbing portion, and the outer inclined surface extends from the object-end surface to an image side of the light absorbing portion and is gradually far away from the optical axis.
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Patent Agency Ranking
公开(公告)号：US20210173168A1
公开(公告)日：2021-06-10
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
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.
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公开(公告)号：US20200278537A1
公开(公告)日：2020-09-03
申请号：US16877540
申请日：2020-05-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng LIN , Wei-Hung WENG , Ming-Ta CHOU
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.
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公开(公告)号：US20190018171A1
公开(公告)日：2019-01-17
申请号：US15869385
申请日：2018-01-12
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Shun CHANG , Cheng-Feng LIN , Ming-Ta CHOU
IPC: G02B5/02
CPC classification number: G02B5/0284 , G02B7/021 , G02B7/025 , G02B7/026 , G02B13/0055 , G02B27/62
Abstract: An annular optical element having an optical axis includes an outer diameter surface, an inner annular surface, an object-side surface and an image-side surface. The object-side surface includes an annular reflecting surface, an annular auxiliary surface and a connecting surface. The annular reflecting surface is inclined with the optical axis. The annular auxiliary surface is closer to the optical axis than the annular reflecting surface is to the optical axis. The connecting surface is for connecting to an optical element, wherein the connecting surface is closer to the optical axis than the annular auxiliary surface is to the optical axis. The image-side surface is located opposite to the object-side surface and includes an annular optical surface. A V-shaped groove is formed by the annular auxiliary surface and the annular reflecting surface of the object-side surface.
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39.发明申请公开(公告)号：US20180321486A1
公开(公告)日：2018-11-08
申请号：US16035914
申请日：2018-07-16
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：US20180134006A1
公开(公告)日：2018-05-17
申请号：US15456749
申请日：2017-03-13
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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