Patents Assigned to Largan Precision Co., Ltd.
  • Publication number: 20230314774
    Abstract: An optical lens assembly includes seven lens elements which are, in order from object side to image side: first lens element, second lens element, third lens element, fourth lens element, fifth lens element, sixth lens element and seventh lens element. The first lens element has object-side surface having at least one convex shape in off-axis region thereof. The second lens element with positive refractive power has object-side surface being convex in paraxial region thereof. The third lens element has image-side surface being convex in paraxial region thereof. The sixth lens element with positive refractive power has object-side surface being convex in paraxial region thereof. The seventh lens element has image-side surface being concave in paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex critical point in off-axis region thereof. The optical lens assembly has a total of seven lens elements.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Yu-Tai TSENG, Chun-Che HSUEH, Hung-Shuo CHEN, Wei-Yu CHEN
  • Patent number: 11774728
    Abstract: A photographing optical lens 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 object-side surface of the sixth lens element is concave in a paraxial region thereof, and the image-side surface of the sixth 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 photographing optical lens system has at least one inflection.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: October 3, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuan Chun Wang, Tzu-Chieh Kuo
  • Patent number: 11774714
    Abstract: A photographing lens assembly includes eight 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 and an eighth lens element. The first lens element with positive refractive power has an object-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. The seventh lens element has an image-side surface being concave in a paraxial region thereof. The eighth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the eighth lens element has at least one critical point in an off-axis region thereof.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: October 3, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Cheng-Chen Lin, Yu-Tai Tseng, Wei-Yu Chen
  • Patent number: 11774721
    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.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: October 3, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Tzu-Chieh Kuo
  • Patent number: 11774830
    Abstract: A plastic barrel, which surrounds a central axis, includes an object-side portion and a tubular portion. The object-side portion includes an object-side opening and a reverse inclined structure. The reverse inclined structure surrounds the object-side opening and includes a reverse inclined surface and at least one annular concave structure. The at least one annular concave structure is disposed on an object side of the reverse inclined surface and recessed from the object-side opening along a direction away from the central axis, wherein a sectional surface of the at least one annular concave structure passing through the central axis includes a valley point and two concave ends, and the two concave ends are disposed on an object side and an image side of the valley point, respectively. The tubular portion is connected to the object-side portion and extends to the image side.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: October 3, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Cheng-Feng Lin, Lin-An Chang, Hsiang-Chi Tang
  • Publication number: 20230305274
    Abstract: An optical imaging 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 has negative refractive power. The second lens element has an object-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. The fifth lens element with negative refractive power has an object-side surface being concave 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. At least one of an object-side surface and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof, wherein both the surfaces of the sixth lens element are aspheric.
    Type: Application
    Filed: June 3, 2023
    Publication date: September 28, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chien-Hsun WU, Chun-Che HSUEH, Wei-Yu CHEN
  • Publication number: 20230305270
    Abstract: An optical 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 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 image-side surface of the fourth lens element is concave in a paraxial region thereof. The object-side surface of the fifth lens element is convex in a paraxial region thereof, and the image-side surface of the fifth lens element is concave in a paraxial region thereof.
    Type: Application
    Filed: June 7, 2022
    Publication date: September 28, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che HSUEH, Meng-Kuan CHO
  • Publication number: 20230305273
    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 refractive power has an object-side surface being convex in a paraxial region thereof. Each second, third, fourth and fifth lens element has refractive power. The sixth 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, and both of the surfaces of the sixth lens element are aspheric. The seventh lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface has at least one convex shape in an off-axis region thereof.
    Type: Application
    Filed: April 3, 2023
    Publication date: September 28, 2023
    Applicant: LARGAN PRECISION CO.,LTD.
    Inventor: Wei-Yu CHEN
  • Publication number: 20230305269
    Abstract: An optical imaging lens assembly includes seven 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 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 object-side surface of the first lens element is convex in a paraxial region thereof, and at least one surface among the object-side surfaces and the image-side surfaces of the seven lens elements has at least one inflection point.
    Type: Application
    Filed: June 1, 2023
    Publication date: September 28, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan HUANG
  • Patent number: 11768356
    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 and a fifth lens element. The first lens element has refractive power. The second lens element has positive refractive power. The third lens element with positive refractive power has an image-side surface being concave in a paraxial region thereof. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are aspheric, and at least one of the surfaces of the fifth lens element has at least one inflection point. The optical photographing lens assembly has a total of five lens elements with refractive power.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: September 26, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Tsung-Han Tsai, Hsin-Hsuan Huang
  • Patent number: 11769342
    Abstract: An optical fingerprint identification system includes a base, a photo sensor, a light emitting layer and a cover. The photo sensor is disposed on the base. The light emitting layer is disposed above the photo sensor, and the light emitting layer includes a light emitting element. The cover is disposed above the light emitting layer. The optical fingerprint identification system further includes a light path adjusting element between the photo sensor and the cover. The light emitting element is disposed away from the light path adjusting element and the photo sensor in a sideway direction that is different from a stack direction of the optical fingerprint identification system.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: September 26, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hsiang-Chi Tang, Chun-Che Hsueh, Tsung-Han Tsai, Fuh-Shyang Yang
  • Patent number: 11762170
    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.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: September 19, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Lin-Yao Liao, Hsin-Hsuan Huang
  • Patent number: 11762132
    Abstract: An imaging lens assembly module has an optical axis, and includes at least one plastic lens element, a carrier element and a light absorbing layer. The plastic lens element, in order from a center to a peripheral region thereof, includes an optical effective portion and a peripheral portion. A side of the peripheral portion includes a plurality of step structures interposed between the side of the peripheral portion and a same side of the optical effective portion. The carrier element defines an inner space for disposing the plastic lens element, and includes a tip end minimal opening and a plurality of annular inner walls. The light absorbing layer is disposed on the peripheral portion of the plastic lens element, and the step structures and the at least one of the annular inner walls facing towards the plastic lens element.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: September 19, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Ming-Ta Chou, Cheng-Feng Lin, Po-Lun Hsu, Ming-Shun Chang, Ming-Ching Lin
  • Patent number: 11762166
    Abstract: A plastic lens barrel includes an object-end portion, an image-end portion and a tube portion. The object-end portion has an object-end outer surface, an object-end opening and an object-end inner surface, wherein one end of the object-end inner surface is connected to the object-end outer surface and surrounds the object-end opening. The image-end portion has an image-end outer surface and an image-end opening. The tube portion connected object-end portion and the image-end portion, and includes a plurality of tube inner surfaces. At least one of the tube inner surfaces and the object-end inner surface includes a plurality of annular convex structures. Each of the annular convex structures surrounds a central axis of the plastic lens barrel. A cross-sectional plane of each annular convex structure passing through the central axis includes a peak point and two valley point.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: September 19, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Ming-Shun Chang, Ming-Ta Chou, Wei-Hung Weng
  • Patent number: 11762173
    Abstract: An electronic device includes at least one optical lens system. The optical lens system includes five lens elements, and the five lens elements are, in order from an outside to an inside, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. At least one of outside surfaces and inside surfaces of the first lens element, the second lens element, the third lens element, the fourth lens element and the fifth lens element is aspheric and includes at least one inflection point.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: September 19, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Tzu-Chieh Kuo
  • Publication number: 20230288669
    Abstract: An imaging optical lens 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 second lens element with negative refractive power has the object-side surface being concave in a paraxial region thereof, and at least one lens surface of the second lens element is aspheric. The image-side surface of the sixth lens element is concave in a paraxial region thereof. The imaging optical lens system further includes an aperture stop located between the second lens element and the third lens element.
    Type: Application
    Filed: May 18, 2022
    Publication date: September 14, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Yen CHEN, Meng-Kuan CHO
  • Publication number: 20230288667
    Abstract: A photographing optical lens assembly includes five lens elements with refractive power, in order from an object side to an image side. The first lens element with refractive power has a convex object-side surface. The second lens element with positive refractive power has an object-side surface and an image-side surface both being aspheric. The third lens element has positive refractive power. The fourth lens element with refractive power has a concave object-side surface. The fifth lens element with refractive power has an object-side surface and a concave image-side surface with at least one inflection point, both the object-side surface and the image-side surface being aspheric.
    Type: Application
    Filed: May 22, 2023
    Publication date: September 14, 2023
    Applicant: LARGAN PRECISION CO.,LTD.
    Inventors: Hsiang-Chi TANG, Ming-Ta CHOU
  • Patent number: 11754816
    Abstract: A 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 negative refractive power. The third lens element has positive refractive power, wherein both surfaces thereof are aspheric. The fourth lens element has refractive power, wherein both surfaces thereof are aspheric. The fifth lens element has negative refractive power, wherein both surfaces thereof are aspheric. 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, wherein both of the two surfaces are aspheric.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: September 12, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang
  • Publication number: 20230283899
    Abstract: An optical image stabilization driver device includes an image sensor, a fixed carrier, a circuit element, an elastic element and a driving element. The circuit element includes a fixed part disposed on the fixed carrier, a movable part and an electrical transmission part. The image sensor is disposed on the movable part. The electrical transmission part has conductive routes electrically connected to the movable part and the fixed part. The elastic element includes a first frame part corresponding to the fixed part, a second frame part corresponding to the movable part and an elastic connection part connected to the first frame part and the second frame part and providing the image sensor with a freedom of movement in a plane. The driving element is configured to drive the image sensor to move relative the fixed carrier in the plane.
    Type: Application
    Filed: August 3, 2022
    Publication date: September 7, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chen-Yi HUANG, Lin An CHANG, Ming-Ta CHOU
  • Patent number: 11747598
    Abstract: An image capturing 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 thereof; a second lens element having negative refractive power; a third lens element; a fourth lens element; a fifth lens element with negative refractive power having at least one of an object-side surface and an image-side surface thereof being aspheric and having at least one inflection point thereof; and a sixth lens element with positive refractive power having both an object-side surface and an image-side surface being convex thereof and at least one of the object-side surface and the image-side surface thereof being aspheric; wherein the image capturing lens system has a total of six lens elements.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: September 5, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang