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公开(公告)号：US10228497B2
公开(公告)日：2019-03-12
申请号：US15635380
申请日：2017-06-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta Chou , Ming-Shun Chang , Chih-Wen Hsu
Abstract: A light blocking sheet having a central axis includes a central hole and a plurality of inner extended portions. The central axis passes through the central hole, which is enclosed by a hole inner surface. The hole inner surface has a first corresponding circle and a second corresponding circle, wherein a diameter of the first corresponding circle is greater than a diameter of the second corresponding circle. The inner extended portions are adjacent to and surround the central hole, wherein each of the inner extended portions is extended and tapered from the first corresponding circle towards the second corresponding circle and includes an inner surface, and the inner surface includes a line pair. The line pair includes two line sections, wherein one end of one line section thereof and one end of the other line section thereof are towards the second corresponding circle and approach to each other.
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公开(公告)号：US10054721B2
公开(公告)日：2018-08-21
申请号：US15592558
申请日：2017-05-11
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wen Hsu , Ming-Ta Chou
CPC classification number: G02B5/005 , G02B7/021 , G02B7/022 , G02B7/026 , G02B13/001
Abstract: An optical lens assembly includes at least two lens elements and at least one light blocking sheet. Each of the lens elements includes a connecting structure for aligning the two lens elements. Each of the connecting structures includes a connecting surface and a circular conical surface, and a receiving space is formed between the two lens elements. A vertical distance between the receiving space and an optical axis is shorter than a vertical distance between each circular conical surface and the optical axis. The light blocking sheet is received in the receiving space and has a polygonal opening, and an outside diameter of the light blocking sheet is smaller than or equal to a minimum diameter of each circular conical surface.
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公开(公告)号：US20170146774A1
公开(公告)日：2017-05-25
申请号：US14991414
申请日：2016-01-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wen Hsu , Wei-Yu Chen
CPC classification number: G02B13/0045 , G02B1/041 , G02B9/60 , G02B13/06
Abstract: An imaging optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with negative refractive power has an image-side surface being concave. The second lens element has an object-side surface being concave and an image-side surface being convex. The third lens element has an object-side surface being concave and an image-side surface being convex. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element with negative refractive power has an object-side surface being concave.
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公开(公告)号：US10288778B2
公开(公告)日：2019-05-14
申请号：US16036997
申请日：2018-07-17
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wen Hsu , Ming-Ta Chou
Abstract: An optical lens assembly includes at least two lens elements and at least one light blocking sheet. Each of the lens elements includes a connecting structure for aligning the two lens elements. Each of the connecting structures includes a connecting surface and a circular conical surface, and a receiving space is formed between the two lens elements. A vertical distance between the receiving space and an optical axis is shorter than a vertical distance between each circular conical surface and the optical axis. The light blocking sheet is received in the receiving space and has a polygonal opening, and an outside diameter of the light blocking sheet is smaller than or equal to a minimum diameter of each circular conical surface.
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公开(公告)号：US09429735B2
公开(公告)日：2016-08-30
申请号：US14558014
申请日：2014-12-02
Applicant: LARGAN Precision Co., Ltd.
Inventor： Chih-Wen Hsu , Wei-Yu Chen
CPC classification number: G02B13/004 , G02B9/34 , G02B13/02 , G02B13/18
Abstract: An optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof, wherein both of the surfaces thereof are aspheric. The fourth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the fourth lens element has at least one convex shape in an off-axis region thereof, and both of the surfaces thereof are aspheric. The optical lens system has a total of four lens elements with refractive power.
Abstract translation: 光学透镜系统从物体侧到像侧依次包括第一透镜元件，第二透镜元件，第三透镜元件和第四透镜元件。 具有正屈光力的第一透镜元件具有在其近轴区域中凸出的物体侧表面。 第二透镜元件具有负屈光力。 具有正折光力的第三透镜元件具有在近轴区域中凸出的图像侧表面，其中两个表面都是非球面的。 具有负屈光力的第四透镜元件在近轴区域具有凹入的图像侧表面，其中第四透镜元件的像侧表面在其偏轴区域中具有至少一个凸形形状，并且 其表面是非球面的。 光学透镜系统具有总共具有屈光力的四个透镜元件。
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Patent Agency Ranking
公开(公告)号：US08842379B2
公开(公告)日：2014-09-23
申请号：US13762884
申请日：2013-02-08
Applicant: LARGAN Precision Co., Ltd.
Inventor： Chih-Wen Hsu , Tsung-Han Tsai , Wei-Yu Chen
Abstract: An image capturing lens assembly includes, in order from an object-side to an image-side along an optical axis, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with negative refractive power has an image-side surface being concave at a paraxial region. The second lens element with positive refractive power has an image-side surface being convex at a paraxial region. The third lens element with negative refractive power has an object-side surface being concave at a paraxial region, and an image-side surface being convex at a paraxial region. The fourth lens element with positive refractive power has an object-side surface being convex at a paraxial region, and an image-side surface being concave at a paraxial region, and at least one of the object-side surface and the image-side surface is aspheric.
Abstract translation: 图像拍摄透镜组件从物体侧到沿着光轴的像侧依次包括第一透镜元件，第二透镜元件，第三透镜元件和第四透镜元件。 具有负屈光力的第一透镜元件具有在近轴区域处凹陷的图像侧表面。 具有正折光力的第二透镜元件具有在近轴区域处凸出的图像侧表面。 具有负屈光力的第三透镜元件具有在近轴区域处凹陷的物体侧表面，并且在侧向区域处凸出的图像侧表面。 具有正屈光力的第四透镜元件具有在近轴区域处凸起的物体侧表面，并且在近轴区域处凹陷的图像侧表面，并且物体侧表面和图像侧表面中的至少一个 是非球面的
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公开(公告)号：US11719863B2
公开(公告)日：2023-08-08
申请号：US17076849
申请日：2020-10-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta Chou , Ming-Shun Chang , Chih-Wen Hsu
CPC classification number: G02B5/005 , G02B7/021 , G02B7/09 , G02B9/08 , G02B27/0018 , G02B27/0988 , G03B9/02 , G02B5/003 , H04N23/54
Abstract: A light blocking sheet having a central axis includes a central hole and a plurality of inner extended portions. The central axis passes through the central hole, which is enclosed by a hole inner surface. The hole inner surface has a first corresponding circle and a second corresponding circle, wherein a diameter of the first corresponding circle is greater than a diameter of the second corresponding circle. The inner extended portions are adjacent to and surround the central hole, wherein each of the inner extended portions is extended and tapered from the first corresponding circle towards the second corresponding circle and includes an inner surface, and the inner surface includes a line pair. The line pair includes two line sections, wherein one end of one line section thereof and one end of the other line section thereof are towards the second corresponding circle and approach to each other.
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公开(公告)号：US09759892B2
公开(公告)日：2017-09-12
申请号：US14991414
申请日：2016-01-08
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wen Hsu , Wei-Yu Chen
CPC classification number: G02B13/0045 , G02B1/041 , G02B9/60 , G02B13/06
Abstract: An imaging optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with negative refractive power has an image-side surface being concave. The second lens element has an object-side surface being concave and an image-side surface being convex. The third lens element has an object-side surface being concave and an image-side surface being convex. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element with negative refractive power has an object-side surface being concave.
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9.发明申请公开(公告)号：US20160124183A1
公开(公告)日：2016-05-05
申请号：US14556275
申请日：2014-12-01
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chih-Wen Hsu , Wei-Yu Chen
CPC classification number: G02B13/0045 , G02B9/60
Abstract: A photographing lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with negative refractive power has a concave image-side surface. The second lens element has refractive power. The third lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The fourth lens element with negative refractive power has a concave image-side surface, wherein an object-side surface and the image-side surface of the fourth lens element are aspheric. The fifth lens element with positive refractive power has a convex object-side surface and a convex image-side surface, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric.
Abstract translation: 拍摄透镜系统从物体侧到像侧依次包括第一透镜元件，第二透镜元件，第三透镜元件，第四透镜元件和第五透镜元件。 具有负屈光力的第一透镜元件具有凹形图像侧表面。 第二透镜元件具有屈光力。 具有正屈光力的第三透镜元件具有凸的物体侧表面和凸形的图像侧表面。 具有负屈光力的第四透镜元件具有凹形图像侧表面，其中物体侧表面和第四透镜元件的图像侧表面是非球面的。 具有正屈光力的第五透镜元件具有凸形物体侧表面和凸形像侧表面，其中第五透镜元件的物体侧表面和像侧表面是非球面的。
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公开(公告)号：US12189149B2
公开(公告)日：2025-01-07
申请号：US18337142
申请日：2023-06-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta Chou , Ming-Shun Chang , Chih-Wen Hsu
Abstract: A light blocking sheet having a central axis includes a central hole and a plurality of inner extended portions. The central axis passes through the central hole, which is enclosed by a hole inner surface. The hole inner surface has a first corresponding circle and a second corresponding circle, wherein a diameter of the first corresponding circle is greater than a diameter of the second corresponding circle. The inner extended portions are adjacent to and surround the central hole, wherein each of the inner extended portions is extended and tapered from the first corresponding circle towards the second corresponding circle and includes an inner surface, and the inner surface includes a line pair. The line pair includes two line sections, wherein one end of one line section thereof and one end of the other line section thereof are towards the second corresponding circle and approach to each other.
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