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公开(公告)号：US20250060653A1
公开(公告)日：2025-02-20
申请号：US18415598
申请日：2024-01-17
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Te-Sheng TSENG , Chia-Cheng TSAI , Heng Yi SU , Ming-Ta CHOU
IPC: G03B9/06
Abstract: An imaging lens module includes an imaging lens, an adjustable aperture module, a first spacer and a second spacer. The adjustable aperture module is disposed between an object-side lens group and an image-side lens group of the imaging lens and comprises a blade assembly, fixed shafts, a movable component and a driving mechanism. The blade assembly includes at least two light-blocking blades forming a light pass aperture. The driving mechanism is to rotate the movable component in a circumferential direction, allowing the blade assembly to move relative to the fixed shafts for varying an aperture size of the light pass aperture. The fixed shafts are disposed on the first spacer. The second spacer and the first spacer together form an inner space in which the adjustable aperture module is accommodated. The second spacer receives and is in physical contact with the object-side lens group.
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公开(公告)号：US12228785B2
公开(公告)日：2025-02-18
申请号：US18342782
申请日：2023-06-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Cheng-Feng Lin , Ming-Ta Chou
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：US12228703B2
公开(公告)日：2025-02-18
申请号：US17561067
申请日：2021-12-23
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Yu-Chun Ke , Hong Rong Kuo , Tzu-Chieh Kuo
Abstract: An optical imaging system 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. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The seventh lens element has negative refractive power, and the object-side surface of the seventh 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 optical imaging system has at least one inflection point in an off-axis region thereof.
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公开(公告)号：US20250044552A1
公开(公告)日：2025-02-06
申请号：US18923861
申请日：2024-10-23
Applicant: LARGAN PRECISION CO., LTD.
Inventor： YI-HSIANG CHUANG , WEI-YU CHEN
Abstract: A photographing optical lens system includes five lens elements being, 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 and a fifth lens element. Each lens element has an object-side surface facing the object side and an image-side surface facing the image side. The first lens element has positive refractive power and the object-side surface being convex in a paraxial region thereof. The image-side surface of the third lens element is convex in a paraxial region thereof. The object-side surface of the fourth lens element is convex in a paraxial region thereof. The fifth lens element has negative refractive power, the object-side surface being convex, and the image-side surface being concave in a paraxial region thereof.
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公开(公告)号：US20250044551A1
公开(公告)日：2025-02-06
申请号：US18922667
申请日：2024-10-22
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Shao-Yu CHANG , Wei-Yu CHEN
Abstract: An imaging optical lens assembly includes five optical elements with refractive power. The five optical elements, in order from an object side to an image side along an optical path, are a first optical element, a second optical element, a third optical element, a fourth optical element, and a fifth optical element. The first optical element has an object-side surface being concave in a paraxial region thereof. The third optical element has negative refractive power.
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Patent Agency Ranking
公开(公告)号：US12216256B2
公开(公告)日：2025-02-04
申请号：US18609037
申请日：2024-03-19
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Hsin-Hsuan Huang
Abstract: A photographing 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, 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 negative 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 object-side surface being concave in a paraxial region thereof. The sixth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof, and an image-side surface being concave in a paraxial region thereof. The photographing optical lens assembly has a total of six lens elements with refractive power.
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公开(公告)号：US12216253B2
公开(公告)日：2025-02-04
申请号：US18398377
申请日：2023-12-28
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Po-Lun Hsu , Hsin-Hsuan Huang
Abstract: An image capturing optical system includes seven lens elements, the seven lens elements being, 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. An image-side surface of the fifth 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：US12210139B2
公开(公告)日：2025-01-28
申请号：US17511395
申请日：2021-10-26
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Kuan Chun Wang , Tzu-Chieh Kuo
Abstract: An optical photographing system includes eight 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, a seventh lens element and an eighth lens element. Each of the eight 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 third lens element is concave in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has positive refractive power. The seventh lens element has negative refractive power, and the image-side surface of the seventh lens element is concave in a paraxial region thereof.
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公开(公告)号：US20250028102A1
公开(公告)日：2025-01-23
申请号：US18752945
申请日：2024-06-25
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Wen-Yu TSAI , Pei-Chi CHANG , Yu Jie HONG , Chun-Hung TENG
Abstract: An optical lens assembly includes at least four optical lens elements being, in order from an object side of the optical lens assembly to an image side thereof, a first optical lens element, a second optical lens element, a third optical lens element and a fourth optical lens element. At least one of the at least four optical lens elements is a filter lens element, the filter lens element includes a near-infrared light filter coating membrane, the filter lens element is made of a glass material, and the filter lens element has at least one aspheric surface. The near-infrared light filter coating membrane includes at least one low refractive index layer and at least one high refractive index layer, and the near-infrared light filter coating membrane is formed by alternately stacking the at least one high refractive index layer and the at least one low refractive index layer.
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公开(公告)号：US12204173B2
公开(公告)日：2025-01-21
申请号：US18229749
申请日：2023-08-03
Applicant: LARGAN PRECISION CO., LTD.
Inventor： Lin-Yao Liao , Hsin-Hsuan Huang
Abstract: This disclosure provides an imaging lens system including, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof; a second lens element with negative refractive power; a third lens element with refractive power, wherein an object-side surface and an image-side surface thereof are aspheric; a fourth lens element with refractive power, wherein an object-side surface and an image-side surface thereof are aspheric; and a fifth lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, which are both aspheric. The imaging lens system is further provided with an aperture stop, and there is no lens element with refractive power disposed between the aperture stop and the first lens element.
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