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公开(公告)号：US12216332B2
公开(公告)日：2025-02-04
申请号：US17545001
申请日：2021-12-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chien-Pang Chang , Wen-Yu Tsai , Lin-An Chang , Ming-Ta Chou , Kuo-Chiang Chu
Abstract: An imaging lens assembly has an optical axis and includes a plastic lens element set. The plastic lens element set includes two plastic lens elements and at least one anti-reflective layer. The two plastic lens elements, in order from an object side to an image side along the optical axis are a first plastic lens element and a second plastic lens element. The anti-reflective layer has a nanostructure and is disposed on at least one of an image-side surface of the first plastic lens element and an object-side surface of the second plastic lens element.
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公开(公告)号：US12216257B2
公开(公告)日：2025-02-04
申请号：US17575713
申请日：2022-01-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Pei-Chi Chang , Wei-Chun Lo , Po-Lun Hsu , Lin-An Chang , Ming-Ta Chou
Abstract: A plastic light-folding element includes an incident surface, an exit surface, at least one reflective surface, at least one connecting surface and at least one gate vestige structure. The incident surface is configured to lead an imaging light enter the plastic light-folding element. The exit surface is configured to lead the imaging light exit the plastic light-folding element. The reflective surface is configured to fold the imaging light. The connecting surface is connected to the incident surface, the exit surface and the reflective surface. The gate vestige structure is disposed on the connecting surface. At least one of the incident surface, the exit surface and the reflective surface includes an optical portion and an arc step structure, the arc step structure is disposed on a periphery of the optical portion, and an arc is formed by the arc step structure centered on the optical portion.
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公开(公告)号：US12158635B2
公开(公告)日：2024-12-03
申请号：US18200489
申请日：2023-05-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsiang-Chi Tang , Ming-Ta Chou
Abstract: A photographing optical lens assembly includes five lens elements with refractive power, in order from an object side to an image side. The first lens element with refractive power has a convex object-side surface. The second lens element with positive refractive power has an object-side surface and an image-side surface both being aspheric. The third lens element has positive refractive power. The fourth lens element with refractive power has a concave object-side surface. The fifth lens element with refractive power has an object-side surface and a concave image-side surface with at least one inflection point, both the object-side surface and the image-side surface being aspheric.
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公开(公告)号：US12007589B2
公开(公告)日：2024-06-11
申请号：US17369631
申请日：2021-07-07
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Hua Tsai , Yu Chen Lai , Ming-Ta Chou
Abstract: An imaging lens system includes a lens element and an aperture element surrounding an imaging optical path and forming an aperture. The aperture element includes a first conical surface, a second conical surface and a contact surface. The first and second conical surfaces surround the imaging optical path. The contact surface is perpendicular to the imaging optical path and contacts the lens element. When the imaging lens system is in a first environment condition, the first conical surface is in contact with the lens element, the second conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region. When the imaging lens system is in a second environment condition, the second conical surface is in contact with the lens element, the first conical surface is spaced apart from the lens element, and the aperture is aligned with the optically effective region.
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公开(公告)号：US11971601B2
公开(公告)日：2024-04-30
申请号：US17351423
申请日：2021-06-18
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu-Chen Lai , Chih-Wei Cheng , Ming-Ta Chou , Ming-Shun Chang
Abstract: An imaging lens assembly includes a plurality of optical elements and an accommodating assembly, wherein the accommodating assembly is for containing the optical elements. The accommodating assembly includes a conical-shaped light blocking sheet and a lens barrel. The conical-shaped light blocking sheet includes an out-side portion and a conical portion, and the conical portion is connected to the out-side portion. The conical portion includes a conical structure tapered from the out-side portion toward one of an object-side and an image-side along the optical axis. The lens barrel is disposed on one side of the conical portion. The optical elements include a most object-side optical element, a most image-side optical element and at least one optical element. The conical structure of the conical-shaped light blocking sheet is physically contacted with only one of the lens barrel, the most object-side optical element and the most image-side optical element.
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Patent Agency Ranking
公开(公告)号：US11886106B2
公开(公告)日：2024-01-30
申请号：US17832470
申请日：2022-06-03
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chen Wei Fan , Ming-Ta Chou , Te-Sheng Tseng , Chen-Yi Huang
CPC classification number: G03B5/02 , H04N23/55 , H04N23/687 , G03B2205/0069
Abstract: A photographing module includes a lens assembly, a reflection element, an image sensor, and lens element, reflection element and image sensor driving modules. An axial voice coil motor of the lens element driving module moves the lens assembly along a lens optical axis. A rotating connection part and a curved recess structure are disposed between a holder and a carrier movable relative to the holder. A lateral voice coil motor of the reflection element driving module drives the carrier carrying the reflection element to rotate around an axis passing through the rotating connection part. A plurality of rollable elements are located between and in contact with the fixed member and the movable plate. A lateral voice coil motor of the image sensor driving module drives the movable plate carrying the image sensor to move based on a dynamic axis orthogonal to the lens optical axis.
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公开(公告)号：US11852848B2
公开(公告)日：2023-12-26
申请号：US16935378
申请日：2020-07-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Wen-Yu Tsai , Heng-Yi Su , Ming-Ta Chou , Chien-Pang Chang , Kuo-Chiang Chu
CPC classification number: G02B5/003 , G02B13/18 , G02B2207/101 , G02B2207/107
Abstract: An imaging lens assembly includes a first optical element and a low-reflection layer. The first optical element has a central opening, and includes a first surface, a second surface and a first outer diameter surface. The first outer diameter surface is connected to the first surface and the second surface. The low-reflection layer is located on at least one of the first surface and the second surface, and includes a carbon black layer, a nano-microstructure and a coating layer. The nano-microstructure is directly contacted with and connected to the carbon black layer, and the nano-microstructure is farther from the first optical element than the carbon black layer from the first optical element. The coating layer is directly contacted with and connected to the nano-microstructure, and the coating layer is farther from the first optical element than the nano-microstructure from the first optical element.
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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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