Patents Assigned to Largan Precision Co., Ltd.
  • Patent number: 11899185
    Abstract: The present disclosure provides an image capturing optical 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 third lens element; a fourth lens element having a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface thereof being aspheric; a fifth lens element having a concave image-side surface concave, both of the object-side surface and the image-side surface being aspheric, at least one of the object-side surface and the image-side surface having at least one convex shape in an off-axis region thereof.
    Type: Grant
    Filed: December 30, 2022
    Date of Patent: February 13, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuan-Ming Chen, Wei-Yu Chen
  • Patent number: 11899272
    Abstract: A lens driving apparatus includes a holder, a cover, a carrier, a first magnet, a coil, a spring, two second magnets and a hall sensor. The holder includes an opening hole. The cover is made of metal material and coupled to the holder. The carrier is movably disposed in the cover, and for coupling to a lens. The first magnet is connected to an inner side of the cover. The coil is wound around an outer side of the carrier, and adjacent to the first magnet. The spring is coupled to the carrier. The second magnets are disposed on one end of the carrier which is toward the holder. The hall sensor is for detecting a magnetic field of any one of the second magnets, wherein the magnetic field is varied according to a relative displacement between the hall sensor and the second magnet which is detected.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: February 13, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Yi Lu, Te-Sheng Tseng, Wen-Hung Hsu
  • Patent number: 11892608
    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, a sixth lens element and a seventh 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 sixth lens element has at least one of an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the sixth lens element comprises at least one inflection point. The seventh lens element has an object-side surface and an image-side surface being both aspheric.
    Type: Grant
    Filed: March 3, 2023
    Date of Patent: February 6, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang
  • Publication number: 20240036287
    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 ?2 millimeters. The one of the imaging lens elements has an outer edge in physical contact with the inner parallel annular surface.
    Type: Application
    Filed: October 10, 2023
    Publication date: February 1, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Lin An CHANG, Ming-Ta CHOU
  • Patent number: 11886033
    Abstract: An imaging lens module includes a plastic lens barrel, a first optical element assembly and a second optical element assembly, wherein both of the first optical element assembly and the second optical element assembly are disposed in the plastic lens barrel. The plastic lens barrel includes a first inner annular surface and a second inner annular surface. The first inner annular surface forms a first receiving space. The second inner annular surface forms a second receiving space. The first optical element assembly is disposed in the first receiving space and includes a plurality of optical lens elements and a first retainer. The second optical element assembly is disposed in the second receiving space and includes a first light blocking sheet and a second retainer.
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: January 30, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chien-Hsun Wu, Lin-An Chang, Ming-Ta Chou
  • Patent number: 11886106
    Abstract: A photographing module includes a lens assembly, a reflection element, an image sensor, and lens element, reflection element and image sensor driving modules. An axial voice coil motor of the lens element driving module moves the lens assembly along a lens optical axis. A rotating connection part and a curved recess structure are disposed between a holder and a carrier movable relative to the holder. A lateral voice coil motor of the reflection element driving module drives the carrier carrying the reflection element to rotate around an axis passing through the rotating connection part. A plurality of rollable elements are located between and in contact with the fixed member and the movable plate. A lateral voice coil motor of the image sensor driving module drives the movable plate carrying the image sensor to move based on a dynamic axis orthogonal to the lens optical axis.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: January 30, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chen Wei Fan, Ming-Ta Chou, Te-Sheng Tseng, Chen-Yi Huang
  • Patent number: 11885939
    Abstract: A photographing optical lens assembly 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. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has an image-side surface being concave in a paraxial region thereof. The sixth lens element with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having at least one critical point in an off-axis region thereof.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: January 30, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che Hsueh, Wei-Yu Chen
  • Patent number: 11886038
    Abstract: The present disclosure provides an imaging optical lens assembly, including, in order from an object side to an image side: a first lens element with negative refractive power having an object-side surface being concave in a paraxial region, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with positive refractive power, and a fifth lens element with negative refractive power having an image-side surface being concave in a paraxial region and at least one convex shape in an off-axial region on the image-side surface, wherein the imaging optical lens assembly has a total of five lens elements.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: January 30, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuan-Ming Chen, Hsin-Hsuan Huang
  • Patent number: 11885937
    Abstract: An optical photographing lens assembly includes nine 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, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element and a ninth lens element. Each of the nine lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one lens element of the optical photographing lens assembly has at least one aspheric lens surface having at least one inflection point.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: January 30, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Tzu-Chieh Kuo
  • Patent number: 11885931
    Abstract: An image capturing 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 a convex object-side surface. The second lens element with negative refractive power has a concave object-side surface. The third lens element has negative refractive power. The fourth lens element has refractive power. The fifth lens element with positive refractive power has a convex image-side surface. The sixth lens element with refractive power has a concave image-side surface, wherein an object-side surface and the image-side surface of the sixth lens element are aspheric, and the sixth lens element has at least one inflection point on the image-side surface thereof.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: January 30, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Tsung-Han Tsai, Hsin-Hsuan Huang
  • Patent number: 11885940
    Abstract: A photographing lens assembly includes, in order from an object side to an image side: a first, a second, a third, a fourth, a fifth and a sixth lens elements. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein the object-side surface has at least one convex critical point in an off-axis region thereof. The third lens element has an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, and an image-side surface being convex in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface has at least one convex critical point in an off-axis region thereof.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: January 30, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Po-Lun Hsu, Wei-Yu Chen, Kuan-Ting Yeh, Ssu-Hsin Liu
  • Patent number: 11880021
    Abstract: 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: Grant
    Filed: January 11, 2023
    Date of Patent: January 23, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 11880048
    Abstract: An imaging lens assembly includes five 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, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The fourth lens element with negative 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, wherein the two surfaces of the fourth lens element are both aspheric. The fifth lens element having an image-side surface being concave in a paraxial region thereof, wherein two surfaces of the fifth lens element are both aspheric, and the image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
    Type: Grant
    Filed: August 30, 2022
    Date of Patent: January 23, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Po-Lun Hsu, Wei-Yu Chen
  • Publication number: 20240019711
    Abstract: An image stabilization lens module includes a lens holder, a light-folding element, a movable carrier, a fixed base, a swing element and a driving mechanism. The movable carrier carries the light-folding element. The fixed base connects the movable carrier via an elastic element. The swing element between the movable carrier and the fixed base includes a main body, a carrier support structure and a base auxiliary structure on a carrier corresponsive surface of the main body, and a base support structure and a carrier auxiliary structure on a base corresponsive surface of the main body. The carrier support structure supports the movable carrier. The base support structure contacts the fixed base. The driving mechanism is for driving the movable carrier to rotate. The carrier auxiliary structure, the base auxiliary structure and the main body are formed in one piece.
    Type: Application
    Filed: September 9, 2022
    Publication date: January 18, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Te-Sheng TSENG, Heng Yi SU, Ming-Ta CHOU
  • Publication number: 20240022803
    Abstract: A camera module includes an imaging lens, an image sensor, a corner drive mechanism and a side drive mechanism. The image sensor is disposed at an image side of the imaging lens. The image sensor includes a photosensitive surface. The photosensitive surface faces the imaging lens. The photosensitive surface is substantially rectangular. The photosensitive surface is movable close to or away from the imaging lens in a focusing direction, and is movable in a translational direction orthogonal to the focusing direction. The corner drive mechanism is disposed corresponding to a corner of the photosensitive surface. The side drive mechanism is disposed corresponding to a side of the photosensitive surface. One of the corner drive mechanism and the side drive mechanism drives the image sensor to move in the focusing direction, and another one thereof drives the image sensor to move in the translational direction.
    Type: Application
    Filed: April 25, 2023
    Publication date: January 18, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Te-Sheng TSENG, Yu-Chen LAI, Ming-Ta CHOU
  • Patent number: 11874585
    Abstract: An image capturing unit includes an imaging element and a dual-shot injection-molded optical folding element that are adjacent to each other. The imaging element is configured for an imaging light to pass through. The dual-shot injection-molded optical folding element includes a first part and a second part. The first part is made of transparent material. The first part has a reflective surface configured to reflect the imaging light. The second part is made of opaque material, and the second part is fixed at periphery of the first part. The second part includes a supporting portion configured to support the dual-shot injection-molded optical folding element. The supporting portion maintains the dual-shot injection-molded optical folding element at a predetermined position corresponding to the imaging element through mechanism assembly.
    Type: Grant
    Filed: February 20, 2023
    Date of Patent: January 16, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Lin An Chang, Pei-Chi Chang, Ming-Ta Chou
  • Patent number: 11874438
    Abstract: An optical imaging lens assembly includes six 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, a fourth lens element, a fifth lens element and a sixth lens element. The second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The fifth lens element has negative refractive power. The sixth lens element has positive refractive power.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: January 16, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Cheng-Yuan Liao, Shu-Yun Yang
  • Publication number: 20240012223
    Abstract: A photographing optical lens assembly 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 negative refractive power. When specific conditions are satisfied, the requirements of compact size and high image quality can be met by the photographing optical lens assembly, simultaneously.
    Type: Application
    Filed: August 31, 2022
    Publication date: January 11, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Yu Jui LIN, Yu-Tai TSENG, Wei-Xiang FU, Cheng-Yu TSAI, Hsin-Hsuan HUANG
  • Patent number: 11867887
    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.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: January 9, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Min-Chun Liao, Lin An Chang, Ming-Ta Chou, Jyun-Jia Cheng, Cheng-Feng Lin, Ming-Shun Chang
  • Patent number: 11867884
    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 refractive power. Each of the third through sixth lens elements has refractive power and an object-side surface and an image-side surface being both aspheric. The photographing optical lens assembly has a total of six lens elements with refractive power.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: January 9, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang