Patents Assigned to Largan Precision Co., Ltd.
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Patent number: 12717117Abstract: An imaging system lens assembly 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 towards the object side and an image-side surface towards the image side. The third lens element has negative refractive power. At least one surface of at least one of the first lens element to the sixth lens element includes at least one inflection point.Type: GrantFiled: September 16, 2022Date of Patent: August 25, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Wei-Xiang Fu, Hsin-Hsuan Huang, Meng-Kuan Cho
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Patent number: 12710621Abstract: A photography optical lens assembly includes four lens elements which are, 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. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The third lens element has positive refractive power, the object-side surface of the third lens element is concave in a paraxial region thereof, and the image-side surface of the third lens element is convex in a paraxial region thereof. The object-side surface and the image-side surface of the third lens element are both aspheric. At least one of the object-side surface and the image-side surface of the third lens element has at least one inflection point.Type: GrantFiled: June 18, 2024Date of Patent: August 18, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting Yeh, Cheng-Yu Tsai, Guan-Jr Liao
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Patent number: 12710622Abstract: An image capturing lens assembly includes six lens units which are, in order from an object side to an image side along an optical path: first through sixth lens units. Each lens unit of the first through third lens units and the fifth through sixth lens units is a single lens element. The fourth lens unit is a single lens element or is composed of two lens elements, and the fourth lens unit at least includes a front lens element. The total number of lens elements of the image capturing lens assembly is six to seven. The first lens unit has an image-side surface being concave in a paraxial region thereof. The third lens unit has an object-side surface being convex in a paraxial region thereof. The front lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof.Type: GrantFiled: November 22, 2023Date of Patent: August 18, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Chun Ke, Shiu Sheng Li, Hong Rong Kuo, Yu-Han Shih
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Publication number: 20260235851Abstract: An imaging lens system includes five 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 and a fifth lens element. Each of the five lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The second lens element has negative refractive power, and the image-side surface of the second lens element is concave in a paraxial region thereof.Type: ApplicationFiled: April 15, 2025Publication date: August 13, 2026Applicant: LARGAN PRECISION CO., LTD.Inventors: Chun-Yen CHEN, Guan-Jr LIAO
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Patent number: 12704699Abstract: An optical image capturing lenses includes, in order from an object side to an image side, a front lens group, a stop, and a rear lens group. The front lens group includes, in order from the object side to the image side, at least a first lens element and a second lens element. The first lens element has a convex object-side surface and a concave image-side surface. The rear lens group includes, in order from the object side to the image side, at least a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The sixth lens element is made of plastic material. The object-side surface and the image-side surface of the sixth lens are aspheric. The sixth lens element has at least one inflection point formed on at least one of the object-side surface and the image-side surface thereof.Type: GrantFiled: July 21, 2023Date of Patent: August 11, 2026Assignee: LARGAN PRECISION CO., LTD.Inventor: Hsin-Hsuan Huang
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Patent number: 12699251Abstract: An imaging optical lens system includes five 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 and a fifth lens element. The first lens element has positive refractive power. The second lens element has an image-side surface being concave in a paraxial region thereof. The third lens element 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 fourth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof.Type: GrantFiled: April 30, 2024Date of Patent: August 4, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting Yeh, Cheng-Yu Tsai
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Patent number: 12699252Abstract: An optical imaging lens assembly from an object side to an image side includes a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface facing the object side and an image-side surface facing the image side. The image-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the fourth lens element is convex in a paraxial region thereof. The object-side surface of the fifth lens element is concave in a paraxial region thereof. At least one of the object-side surface and image-side surface of at least one of the first through fifth lens elements has at least one inflection point in an off-axis region thereof. An f-number of the optical imaging lens assembly is Fno, satisfying 1.5<Fno<2.0.Type: GrantFiled: March 5, 2024Date of Patent: August 4, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Che Hsueh, Tzu-Chieh Kuo
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Patent number: 12699253Abstract: An imaging optical lens assembly includes seven lens elements, in order from an object side to an image side along an optical path, are 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 first lens element has negative refractive power. The object-side surface of the first lens element is concave in a paraxial region thereof and the image-side surface of the first lens element is convex in a paraxial region thereof. The object-side surface of the second lens element is convex in a paraxial region thereof. With specific conditions being satisfied, the imaging optical lens assembly can be miniaturized while providing superior image quality.Type: GrantFiled: June 9, 2022Date of Patent: August 4, 2026Assignee: LARGAN PRECISION CO., LTD.Inventor: Meng-Kuan Cho
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Publication number: 20260219475Abstract: A photographing optical 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 first lens element has positive refractive power, the object-side surface of the first lens element is convex in a paraxial region thereof, and the image-side surface of the first lens element is concave in a paraxial region thereof. The third lens element has negative refractive power, the image-side surface of the third lens element is concave in a paraxial region thereof, and the image-side surface of the third lens element has at least one inflection point.Type: ApplicationFiled: March 14, 2025Publication date: July 30, 2026Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Chun KE, Cheng-Yu TSAI
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Patent number: 12693502Abstract: An image capturing system lens assembly includes eight lens elements, the eight 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, a seventh lens element and an eighth lens element. Each of the eight lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The fourth lens element has negative refractive power. The image-side surface of the eighth lens element is concave in a paraxial region thereof, and the image-side surface of the eighth lens element includes at least one inflection point.Type: GrantFiled: May 21, 2024Date of Patent: July 28, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: I-Chieh Chen, Cheng-Yu Tsai
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Publication number: 20260211214Abstract: An optical photography lens system includes a lens barrel and a plurality of lens elements disposed in the lens barrel. The total number of the plurality of lens elements is six, seven, or eight. Each of the plurality of lens elements has an object-side surface facing toward an object side and an image-side surface facing toward an image side. At least one of the object-side surface and the image-side surface of at least one lens element of the optical photography lens system has at least one inflection point. The optical photography lens system further includes a light-blocking element located in the lens barrel and located on an object side of the first lens element. The lens barrel has a lens-barrel-minimum opening located on an object side of a minimum opening of the light-blocking element.Type: ApplicationFiled: May 8, 2025Publication date: July 23, 2026Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Chun KE, Yu-Han SHIH
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Patent number: 12687698Abstract: An optical imaging lens 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. 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 second lens element has negative refractive power. 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 image-side surface of the fifth lens element is concave in a paraxial region thereof. The sixth lens element has positive refractive power, and the image-side surface of the sixth lens element is convex in a paraxial region thereof.Type: GrantFiled: October 17, 2023Date of Patent: July 21, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Wei Chen, Chun-Yen Chen, Cheng-Yu Tsai
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Patent number: 12687761Abstract: A controllable aperture stop includes a light pass portion, a fixed portion, a driving part and rollable elements. The light pass portion includes movable blades together surrounding a light pass aperture. The fixed portion has shaft structures corresponding to the movable blades. The driving part includes a rotatable element, a magnet and a coil. The rotatable element is for driving the movable blades to rotate relative to the shaft structures to adjust the size of the light pass aperture. The magnet is disposed on the rotatable element. The coil corresponds to the magnet. The magnet and the coil are to drive the rotatable element to rotate around the light pass aperture. The rollable elements are disposed between the fixed portion and the rotatable element and arranged around the light pass aperture, so the rotatable element is rotatable relative to the fixed portion.Type: GrantFiled: August 21, 2024Date of Patent: July 21, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Hao Jan Chen, Yu Chen Lai
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Publication number: 20260202645Abstract: A photographing optical lens assembly 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. The first lens element has negative refractive power. The second lens element has an image-side surface being concave in a paraxial region thereof. The fifth lens element has an object-side surface being convex in a paraxial region thereof. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The seventh lens element has positive refractive power. The eighth lens element has an image-side surface being concave in a paraxial region thereof and having at least one inflection point.Type: ApplicationFiled: February 19, 2025Publication date: July 16, 2026Applicant: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting YEH, Cheng-Yu TSAI
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Patent number: 12681276Abstract: A photographing 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, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The second lens element has positive refractive power. The eighth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the eighth lens element has at least one convex shape in an off-axis region thereof, and both an object-side surface and the image-side surface thereof are aspheric. The photographing optical lens system has a total of eight lens elements. An air gap in a paraxial region is located between every two lens elements of the photographing optical lens system that are adjacent to each other.Type: GrantFiled: May 2, 2024Date of Patent: July 14, 2026Assignee: LARGAN PRECISION CO., LTD.Inventor: Wei-Yu Chen
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Patent number: 12681277Abstract: An imaging lens assembly module includes an imaging lens assembly, a light path folding element and a plastic assembling element. The imaging lens assembly includes an optical lens element. The light path folding element has a light incident surface, a light exiting surface and an optical reflecting surface. The plastic assembling element includes an assembling surface, a first surface and a second surface. The assembling surface is physically contacted with the light path folding element. Both the first surface and the second surface are disposed towards the light path folding element, and the second surface and the first surface are disposed adjacent to each other. The second surface and the optical reflecting surface are correspondingly disposed. The second surface includes a protruding structure array, and the protruding structure array includes at least seven protruding structures arranged at equal intervals.Type: GrantFiled: April 16, 2024Date of Patent: July 14, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Wei-Che Tung, Lin-An Chang, Wen-Yu Tsai, Chien-Pang Chang, Kuo-Chiang Chu
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Patent number: 12674911Abstract: An optical lens assembly includes at least one optical element. At least one of the at least one optical element includes a multi-layer coating membrane, and the multi-layer coating membrane is formed by alternately stacking high refractive index layers and low refractive index layers. The multi-layer coating membrane is a dual-bandpass filtering membrane.Type: GrantFiled: November 14, 2022Date of Patent: July 7, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Wen-Yu Tsai, Hsiang-Chi Tang, Yu Jie Hong, Chun-Hung Teng
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Patent number: 12674913Abstract: An optical lens assembly includes at least one optical element. At least one of the at least one optical element includes a multi-layer coating membrane, and the multi-layer coating membrane is formed by alternately stacking high refractive index layers and low refractive index layers. The multi-layer coating membrane is a dual-bandpass filtering membrane.Type: GrantFiled: October 27, 2023Date of Patent: July 7, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Wen-Yu Tsai, Hsiang-Chi Tang, Yu Jie Hong, Chun-Hung Teng
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Patent number: 12677056Abstract: A camera module includes an imaging lens assembly, an image sensor and an optical plate. The image sensor is disposed on an image surface of the imaging lens assembly. The optical plate is disposed between the imaging lens assembly and the image sensor, and includes a substrate and at least one anti-reflection layer. The substrate has an object-side surface and an image-side surface, the object-side surface faces towards an object side, the image-side surface faces towards an image side, and the object-side surface is parallel with the image-side surface. The at least one anti-reflection layer is disposed on the object-side surface or the image-side surface of the substrate, the anti-reflection layer includes a nanocrystal structure layer and an optical-connecting layer, wherein the nanocrystal structure layer includes a metal oxide crystal, the optical-connecting layer connects the substrate and the nanocrystal structure layer.Type: GrantFiled: July 30, 2024Date of Patent: July 7, 2026Assignee: LARGAN PRECISION CO., LTD.Inventors: Wen-Yu Tsai, Chien-Pang Chang, Lin-An Chang, Ming-Ta Chou, Kuo-Chiang Chu
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Publication number: 20260186241Abstract: A photographing optical system includes five 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 and a fifth lens element. Each of the five lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The object-side surface of the second lens element is concave in a paraxial region thereof. The fifth lens element has negative refractive power. The image-side surface of the fifth lens element is concave in a paraxial region thereof.Type: ApplicationFiled: February 14, 2025Publication date: July 2, 2026Applicant: LARGAN PRECISION CO., LTD.Inventors: Chun-Wu CHU, Guan-Jr LIAO