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公开(公告)号：US11921267B2
公开(公告)日：2024-03-05
申请号：US17718494
申请日：2022-04-12
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta Chou
IPC: G02B17/00 , G02B1/04 , G02B5/04 , G02B13/00 , G02B17/08 , G02B21/00 , G02B21/28 , G02B27/12 , G02B6/26 , G02B19/00 , G02B23/24 , G02B27/01
CPC classification number: G02B13/0065 , G02B1/04 , G02B17/0856 , G02B5/04 , G02B6/26 , G02B17/00 , G02B17/086 , G02B19/0028 , G02B23/243 , G02B27/0101
Abstract: An optical path folding element includes an incident surface, a path folding surface and an exiting surface. The incident surface allows a light ray to pass into the optical path folding element. The path folding surface folds the light ray from the incident surface. The exiting surface allows the light ray to pass through and depart from the optical path folding element. At least one of the incident surface and the exiting surface includes an optical effective portion and at least one engaging structure symmetrically disposed around the optical effective portion. The engaging structure includes an annular surface portion and an inclined surface portion. The annular surface portion surrounds the optical effective portion, and the inclined surface portion is located between the annular surface portion and the optical effective portion. An angle between the annular surface portion and the inclined surface portion satisfies a specific condition.
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公开(公告)号：US11899269B2
公开(公告)日：2024-02-13
申请号：US17242337
申请日：2021-04-28
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：US11874585B2
公开(公告)日：2024-01-16
申请号：US18111833
申请日：2023-02-20
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Lin An Chang , Pei-Chi Chang , Ming-Ta Chou
IPC: G03B17/17
CPC classification number: G03B17/17
Abstract: An image capturing unit includes an imaging element and a dual-shot injection-molded optical folding element that are adjacent to each other. The imaging element is configured for an imaging light to pass through. The dual-shot injection-molded optical folding element includes a first part and a second part. The first part is made of transparent material. The first part has a reflective surface configured to reflect the imaging light. The second part is made of opaque material, and the second part is fixed at periphery of the first part. The second part includes a supporting portion configured to support the dual-shot injection-molded optical folding element. The supporting portion maintains the dual-shot injection-molded optical folding element at a predetermined position corresponding to the imaging element through mechanism assembly.
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公开(公告)号：US11867887B2
公开(公告)日：2024-01-09
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
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：US11762166B2
公开(公告)日：2023-09-19
申请号：US17563225
申请日：2021-12-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Shun Chang , Ming-Ta Chou , Wei-Hung Weng
IPC: G02B7/02
Abstract: A plastic lens barrel includes an object-end portion, an image-end portion and a tube portion. The object-end portion has an object-end outer surface, an object-end opening and an object-end inner surface, wherein one end of the object-end inner surface is connected to the object-end outer surface and surrounds the object-end opening. The image-end portion has an image-end outer surface and an image-end opening. The tube portion connected object-end portion and the image-end portion, and includes a plurality of tube inner surfaces. At least one of the tube inner surfaces and the object-end inner surface includes a plurality of annular convex structures. Each of the annular convex structures surrounds a central axis of the plastic lens barrel. A cross-sectional plane of each annular convex structure passing through the central axis includes a peak point and two valley point.
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Patent Agency Ranking
公开(公告)号：US11726291B2
公开(公告)日：2023-08-15
申请号：US17749222
申请日：2022-05-20
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng Lin , Ming-Ta Chou
CPC classification number: G02B7/021 , G02B1/041 , G02B1/10 , G02B1/14 , G02B13/0045
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：US11662596B2
公开(公告)日：2023-05-30
申请号：US17672783
申请日：2022-02-16
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsiang-Chi Tang , Cheng-Chen Lin , Ming-Ta Chou
CPC classification number: G02B27/0955 , G02B7/021 , G02B7/022 , G02B9/34 , G02B9/60 , G02B13/0045 , H04N23/55
Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.
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公开(公告)号：US11614676B2
公开(公告)日：2023-03-28
申请号：US17458049
申请日：2021-08-26
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Lin An Chang , Pei-Chi Chang , Ming-Ta Chou
IPC: G03B17/17
Abstract: An image capturing unit includes an imaging element and a dual-shot injection-molded optical folding element that are adjacent to each other. The imaging element is configured for an imaging light to pass through. The dual-shot injection-molded optical folding element includes a first part and a second part. The first part is made of transparent material. The first part has a reflective surface configured to reflect the imaging light. The second part is made of opaque material, and the second part is fixed at periphery of the first part. The second part includes a supporting portion configured to support the dual-shot injection-molded optical folding element. The supporting portion maintains the dual-shot injection-molded optical folding element at a predetermined position corresponding to the imaging element through mechanism assembly.
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公开(公告)号：US11567313B2
公开(公告)日：2023-01-31
申请号：US17098594
申请日：2020-11-16
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Shun Chang , Yu-Jen Chiu , Ming-Ta Chou
Abstract: An annular optical component includes a plastic element and a metal element disposed on the plastic element. The plastic element includes a plastic part, and the metal element includes a metal part. The plastic part surrounds a central axis of the annular optical component so as to form a central opening. An outer annular surface and an inner annular surface of the annular optical component are opposite to each other. An object-side surface of the annular optical component faces an image-side direction of the annular optical component and is connected to the outer annular surface and the inner annular surface. An image-side surface of the annular optical component faces an image-side direction of the annular optical component and is connected to the outer annular surface and the inner annular surface. The image-side surface and the object-side surface are opposite to each other.
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公开(公告)号：US11487107B2
公开(公告)日：2022-11-01
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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