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公开(公告)号：US08947788B2
公开(公告)日：2015-02-03
申请号：US14253857
申请日：2014-04-15
Applicant: Largan Precision Co., Ltd.
Inventor： Tsung-Han Tsai , Ming-Ta Chou
CPC classification number: G02B13/0045 , G02B3/04 , G02B5/005 , G02B9/64 , G02B13/02 , G02B13/04 , G02B13/18 , G02B13/22 , G02B27/0025 , H04N5/2254
Abstract: An image lens assembly 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, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with negative refractive power has a convex object-side surface. The second lens element has positive refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has refractive power. The sixth lens element with refractive power is made of plastic material, wherein at least one surface of the sixth lens element is aspheric. The seventh lens element with refractive power made of plastic material has a concave image-side surface changing from concave in a paraxial region to convex in a peripheral region, and at least one surface thereof is aspheric.
Abstract translation: 第一透镜元件，第二透镜元件，第三透镜元件，第四透镜元件，第五透镜元件，第六透镜元件和第七透镜元件，从物体侧到像侧依次包括： 透镜元件 具有负屈光力的第一透镜元件具有凸起的物体侧表面。 第二透镜元件具有正的折光力。 第三透镜元件具有屈光力。 第四透镜元件具有屈光力。 第五透镜元件具有屈光力。 具有屈光力的第六透镜元件由塑料材料制成，其中第六透镜元件的至少一个表面是非球面的。 具有由塑料材料制成的屈光力的第七透镜元件具有凹面图像侧表面，其在近轴区域中的凹部在周边区域中变为凸形，并且其至少一个表面是非球面的。
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公开(公告)号：US08891183B2
公开(公告)日：2014-11-18
申请号：US13663602
申请日：2012-10-30
Applicant: Largan Precision Co., Ltd.
Inventor： Tsung-Han Tsai , Ming-Ta Chou
CPC classification number: G02B13/18 , G02B13/0045
Abstract: An image 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, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has refractive power. The third lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element with positive refractive power has a convex object-side surface and a concave image-side surface. The sixth lens element with positive refractive power has a convex object-side surface and a concave image-side surface, wherein the image-side surface thereof changes from concave at a paraxial region to convex at a peripheral region. The fifth and sixth lens elements are made of plastic, and the surfaces thereof are aspheric.
Abstract translation: 第一透镜元件，第二透镜元件，第三透镜元件，第四透镜元件，第五透镜元件和第六透镜元件，从物体侧到像侧依次包括图像透镜组件。 具有正折光力的第一透镜元件具有凸的物体侧表面。 第二透镜元件具有屈光力。 第三透镜元件具有正的折光力。 第四透镜元件具有负折光力。 具有正屈光力的第五透镜元件具有凸的物体侧表面和凹形的图像侧表面。 具有正屈光力的第六透镜元件具有凸形的物体侧表面和凹形的图像侧表面，其中图像侧表面在外围区域的近轴区域处的凹部变为凸形。 第五和第六透镜元件由塑料制成，其表面是非球面的。
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公开(公告)号：US08743480B2
公开(公告)日：2014-06-03
申请号：US13677319
申请日：2012-11-15
Applicant: Largan Precision Co., Ltd.
Inventor： Chun-Che Hsueh , Tsung-Han Tsai , Ming-Ta Chou
IPC: G02B13/18
CPC classification number: G02B13/18 , G02B13/0045
Abstract: An optical image capturing 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 refractive power has a concave object-side surface, and the object-side surface changes from concave at a paraxial region to convex at a peripheral region. The second lens element has refractive power. The third lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element with positive refractive power has a convex object-side surface and a concave image-side surface, wherein the image-side surface changes from concave at a paraxial region to convex at a peripheral region. The object-side surfaces and the image-side surfaces of the first and fifth lens elements are aspheric.
Abstract translation: 光学摄像透镜组件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。 具有屈光力的第一透镜元件具有凹入的物体侧表面，并且物体侧表面在近轴区域处的凹部在周边区域处变为凸形。 第二透镜元件具有屈光力。 第三透镜元件具有正的折光力。 第四透镜元件具有负折光力。 具有正屈光力的第五透镜元件具有凸形的物体侧表面和凹形的图像侧表面，其中图像侧表面在外围区域的近轴区域处的凹部变为凸形。 第一和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：US08717688B2
公开(公告)日：2014-05-06
申请号：US13732937
申请日：2013-01-02
Applicant: Largan Precision Co., Ltd.
Inventor： Ming-Ta Chou
CPC classification number: G02B13/00 , G02B9/00 , G02B9/60 , G02B9/62 , G02B9/64 , G02B13/001 , G02B13/0045 , G02B13/02
Abstract: This disclosure provides an image capturing lens system comprising: a positive first lens element having a convex object-side surface; a negative second lens element having a concave object-side surface; a positive third lens element having a convex object-side surface; a negative fourth lens element having a concave object-side surface and a convex image-side surface; a fifth lens element with refractive power having a concave image-side surface, the shape of the image-side surface changing from concave at the paraxial region thereof to convex while away from the paraxial region thereof, both of the object-side and image-side surfaces being aspheric.
Abstract translation: 本公开提供了一种图像拍摄透镜系统，包括：具有凸起物体侧表面的正的第一透镜元件; 具有凹面物侧表面的负第二透镜元件; 具有凸形物体侧表面的正的第三透镜元件; 具有凹面物侧表面和凸像侧表面的负第四透镜元件; 具有折射力的第五透镜元件具有凹形图像侧表面，图像侧表面的形状从其近轴区域处的凹部变为远离其近轴区域的凸起，但是物体侧和图像侧表面的形状， 侧面是非球面的。
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公开(公告)号：US12271106B2
公开(公告)日：2025-04-08
申请号：US18134492
申请日：2023-04-13
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Te-Sheng Tseng , Chen Wei Fan , Ming-Ta Chou , Kuan-Ming Chen
Abstract: A variable aperture module includes a blade assembly including movable blades, a positioning element including positioning structures and a driving part including a rotation element. The movable blades are disposed around an optical axis to form a light passable hole with adjustable size for different hole size states and each have an inner surface to define the contour of the light passable hole in each hole size state. The positioning structures correspond to the movable blades. The rotation element is rotatable with respect to the positioning element and is configured to rotate the movable blades to adjust a size of the light passable hole. There are matte structures disposed on each inner surface. Each matte structure is single structure extending towards the optical axis, such that at least part of the contour of the light passable hole has an undulating shape at least in several hole size states.
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Patent Agency Ranking
公开(公告)号：US12235509B2
公开(公告)日：2025-02-25
申请号：US18378456
申请日：2023-10-10
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Lin An Chang , Ming-Ta Chou
Abstract: An imaging lens system has an optical axis and includes a plastic lens barrel and an imaging lens assembly disposed in the plastic lens barrel. The plastic lens barrel surrounds the optical axis and includes an object-side surface, an image-side surface, an inner annular portion and an outer annular portion. The object-side and image-side surfaces are oppositely disposed and substantially perpendicular to the optical axis. The inner and outer annular portions are connected to the object-side and image-side surfaces. The inner annular portion has an inner parallel annular surface, and the outer annular portion has a first outer annular surface and a gate trace. The imaging lens assembly includes a plurality of imaging lens elements. One of the imaging lens elements has an outer diameter larger than π2 millimeters. The one of the imaging lens elements has an outer edge in physical contact with the inner parallel annular surface.
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公开(公告)号：US12066601B2
公开(公告)日：2024-08-20
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
CPC classification number: G02B13/0045 , G03B17/12
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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公开(公告)号：US12013514B2
公开(公告)日：2024-06-18
申请号：US17553988
申请日：2021-12-17
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Ming-Ta Chou , Ruei-Yang Luo
CPC classification number: G02B13/0035 , G02B7/003 , G02B7/021 , G02B7/026 , H04N23/55
Abstract: An imaging lens assembly includes lens elements, a metal spacing structure and at least one blocking sheet. At least one lens element is a plastic lens element. The metal spacing structure is for maintaining the plastic lens element in a space between two sides thereof and two of the lens elements adjacent thereto, respectively. The metal spacing structure includes, in order from an object side to an image side, a first spacing ring having a first through hole and a second spacing ring having a second through hole, wherein the second through hole is larger than the first through hole. At least one of the first spacing ring and the second spacing ring is made of metal material. The blocking sheet is disposed between two of the lens elements, and is not disposed between the first spacing ring and the second spacing ring.
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公开(公告)号：US11994738B2
公开(公告)日：2024-05-28
申请号：US17732654
申请日：2022-04-29
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Jyun-Jia Cheng , Heng-Yi Su , Ming-Ta Chou , Ming-Shun Chang
CPC classification number: G02B7/022 , G02B7/021 , G02B13/0045
Abstract: An imaging lens assembly includes a plastic barrel and an optical element set. The optical element set includes an optical lens element, a light blocking sheet and a light-shielding layer. At least one surface of an object-side peripheral surface and an image-side peripheral surface of the optical lens element includes an annular side wall. An annular abutting surface of the light blocking sheet and the annular side wall of the optical lens element are disposed correspondingly to each other. The light-shielding layer surrounds a central opening of the light blocking sheet and includes an annular concave-curved portion. The annular concave-curved portion is for retaining the light blocking sheet, so that there is no relative displacement in a direction parallel to an optical axis between the annular abutting surface of the light blocking sheet and the annular side wall of the optical lens element.
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公开(公告)号：US11924534B2
公开(公告)日：2024-03-05
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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