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公开(公告)号：US12298480B2
公开(公告)日：2025-05-13
申请号：US18233639
申请日：2023-08-14
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Tzu-Chieh Kuo
Abstract: An image capturing optical system includes ten lens elements which are, in order from an object side to an image side along an optical path: a first lens element having positive refractive power, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element, a ninth lens element and a tenth lens element having negative refractive power. Each of the ten lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The image-side surface of the second lens element is concave in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the image capturing optical system has at least one critical point in an off-axis region thereof.
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公开(公告)号：US12287532B2
公开(公告)日：2025-04-29
申请号：US17669985
申请日：2022-02-11
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu Jui Lin , Tzu-Chieh Kuo
Abstract: An image capturing system includes six lens elements which are, in order from an object side to an image side along an optical path: 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. Each of the six lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The fourth lens element has positive refractive power, the object-side surface of the fourth lens element is concave in a paraxial region thereof, and the image-side surface of the fourth lens element is convex in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the image capturing system has at least one inflection point in an off-axis region thereof.
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公开(公告)号：US20250130396A1
公开(公告)日：2025-04-24
申请号：US18991878
申请日：2024-12-23
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：US12282142B2
公开(公告)日：2025-04-22
申请号：US18461573
申请日：2023-09-06
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Tsung-Han Tsai , Hsin-Hsuan Huang
Abstract: An optical image capturing 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, the second and the third lens elements all have refractive power. The fourth lens element with refractive power has both surfaces being aspheric. The fifth lens element with refractive power has both surfaces being aspheric. The sixth lens element with refractive power has an image-side surface having at least one convex shape at a peripheral region thereof and both surfaces being aspheric. The seventh lens element with refractive power has an image-side surface having at least one convex shape at a peripheral region thereof, wherein both surfaces being aspheric, and at least one surface has at least one inflection point thereon.
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公开(公告)号：US20250116847A1
公开(公告)日：2025-04-10
申请号：US18987194
申请日：2024-12-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Wei-Yu CHEN
Abstract: An optical photographing 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 an object-side surface being convex in a paraxial region thereof. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being convex in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are both aspheric. The sixth lens element with refractive power has an object-side surface and an image-side surface being both aspheric. The optical photographing lens assembly has a total of six lens elements with refractive power.
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Patent Agency Ranking
公开(公告)号：US20250110386A1
公开(公告)日：2025-04-03
申请号：US18642537
申请日：2024-04-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Zheng-Zhi HONG , Hsiu-Yi HSIAO , Hao Jan CHEN , Ming-Ta CHOU
Abstract: An optical lens module includes an adjustable aperture assembly including rotatable blades, a driving part and an attractive force mechanism. The rotatable blades surround an optical axis of a lens element and form a light pass aperture. The driving part includes a rotatable component, a fixed component, a driving magnet and a coil. The rotatable component rotates the rotatable blades for adjusting an aperture size of the light pass aperture. The driving magnet is disposed on the rotatable component. The coil corresponds to the driving magnet to rotate the rotatable component. The attractive force mechanism provides an attractive force between the rotatable component and the fixed component and provides a driving force exerted on the rotatable blades for maintaining the light pass aperture in an enlarged state. The attractive force includes a magnetic force exerted by the rotatable component on a first magnetic element fixed on the fixed component.
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公开(公告)号：US12265205B2
公开(公告)日：2025-04-01
申请号：US17718445
申请日：2022-04-12
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chun-Yen Chen , Tzu-Chieh Kuo
Abstract: An optical imaging system assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path, 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 second lens element has negative refractive power. An object-side surface of the third lens element is convex in a paraxial region thereof. An image-side surface of the fifth lens element is convex in a paraxial region thereof. The sixth lens element has negative refractive power, an object-side surface of the sixth lens element is convex in a paraxial region thereof, an image-side surface of the sixth lens element is concave in a paraxial region thereof. The seventh lens element has negative refractive power.
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公开(公告)号：US20250102778A1
公开(公告)日：2025-03-27
申请号：US18964632
申请日：2024-12-01
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Chien-Pang CHANG , Pei-Chi CHANG , Chun-Hung TENG
Abstract: An optical lens assembly includes at least two optical lens elements. At least one of the optical lens elements includes a long wavelength absorbing material, the optical lens element including the long wavelength absorbing material is made of a plastic material, and the long wavelength absorbing material is evenly mixed with the plastic material. At least one of the optical lens elements includes a long wavelength filter coating, the optical lens element including the long wavelength filter coating is made of a plastic material, and the long wavelength filter coating is arranged on an object-side surface or an image-side surface of the optical lens element. The long wavelength filter coating includes a plurality of high refractive index coating layers and a plurality of low refractive index coating layers, and the high refractive index coating layers and the low refractive index coating layers are stacked in alternations.
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公开(公告)号：US20250102771A1
公开(公告)日：2025-03-27
申请号：US18386755
申请日：2023-11-03
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu Jui LIN , Shih-Han CHEN , Guang-Yan LIU , Yu-Han SHIH , Hsin-Hsuan HUANG
IPC: G02B13/00
Abstract: An imaging lens assembly includes three lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element and a third lens element. Each of the three lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the second lens element is concave in a paraxial region thereof. At least one surface of at least one lens element in the imaging lens assembly has at least one inflection point.
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公开(公告)号：US12253656B2
公开(公告)日：2025-03-18
申请号：US18518314
申请日：2023-11-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Min-Chun Liao , Lin An Chang , Ming-Ta Chou , Jyun-Jia Cheng , Cheng-Feng Lin , Ming-Shun Chang
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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