Patents by Inventor Kuan-Chun Wang

Kuan-Chun Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12210139
    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.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: January 28, 2025
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuan Chun Wang, Tzu-Chieh Kuo
  • Publication number: 20250004254
    Abstract: An image 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 third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth 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 image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
    Type: Application
    Filed: September 11, 2024
    Publication date: January 2, 2025
    Inventors: Chung-Yu WEI, Hung-Shuo CHEN, Kuan-Chun WANG, Wei-Yu CHEN
  • Patent number: 12117596
    Abstract: An image 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 third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth 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 image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: October 15, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chung-Yu Wei, Hung-Shuo Chen, Kuan-Chun Wang, Wei-Yu Chen
  • Patent number: 12019306
    Abstract: An optical imaging 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 first lens element has negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is concave in a paraxial region thereof. The fourth lens element has negative refractive power. The image-side surface of the sixth lens element is concave in a paraxial region thereof and has at least one critical point in an off-axis region thereof.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: June 25, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Yi-Hsiang Chuang, Kuan Chun Wang, Chun-Yen Chen, Kuan-Ting Yeh, Yu-Chun Ke, Tzu-Chieh Kuo
  • Publication number: 20240061216
    Abstract: A photographing lens assembly includes a total of 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 second lens element has negative refractive power. The eighth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. At least one lens element of the photographing lens assembly has at least one lens surface having at least one inflection point.
    Type: Application
    Filed: October 24, 2023
    Publication date: February 22, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che HSUEH, Hung-Shuo CHEN, Kuan Chun WANG, Wei-Yu CHEN
  • Publication number: 20240045180
    Abstract: An image 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 third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth 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 image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
    Type: Application
    Filed: October 16, 2023
    Publication date: February 8, 2024
    Inventors: Chung-Yu WEI, Hung-Shuo CHEN, Kuan-Chun WANG, Wei-Yu CHEN
  • Patent number: 11860447
    Abstract: An imaging optical lens assembly includes five lens elements. The five 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 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 first lens element has positive refractive power, the second lens element has negative refractive power and the third lens element has negative refractive power. With specific conditions being satisfied, the imaging optical lens assembly can be miniaturized while providing good image quality.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: January 2, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Wen-Yao Yang, Kuan-Chun Wang, Hsin-Hsuan Huang, Huan-Sheng Chang
  • Patent number: 11835695
    Abstract: A photographing lens assembly includes a total of 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 second lens element has negative refractive power. The eighth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. At least one lens element of the photographing lens assembly has at least one lens surface having at least one inflection point.
    Type: Grant
    Filed: January 2, 2023
    Date of Patent: December 5, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che Hsueh, Hung-Shuo Chen, Kuan Chun Wang, Wei-Yu Chen
  • Patent number: 11828910
    Abstract: An image 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 third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth 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 image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: November 28, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chung-Yu Wei, Hung-Shuo Chen, Kuan-Chun Wang, 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: 11662551
    Abstract: An optical lens assembly includes four lens elements which are, in order from an object side to an image side along an imaging optical path: a first lens element, a second lens element, a third lens element and a fourth 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 concave in a paraxial region thereof. 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, and at least one of the object-side surface and the image-side surface of the fourth lens element has at least one inflection point in an off-axis region thereof.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: May 30, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuo-Jui Wang, Kuan Chun Wang, Hung-Shuo Chen, Jin Sen Wang, Syuan Ruei Lai, Wei-Yu Chen
  • Publication number: 20230144951
    Abstract: A photographing lens assembly includes a total of 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 second lens element has negative refractive power. The eighth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. At least one lens element of the photographing lens assembly has at least one lens surface having at least one inflection point.
    Type: Application
    Filed: January 2, 2023
    Publication date: May 11, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che HSUEH, Hung-Shuo CHEN, Kuan Chun WANG, Wei-Yu CHEN
  • Publication number: 20230086139
    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.
    Type: Application
    Filed: October 26, 2021
    Publication date: March 23, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Kuan Chun WANG, Tzu-Chieh KUO
  • Patent number: 11579412
    Abstract: A photographing lens assembly includes a total of 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 second lens element has negative refractive power. The eighth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. At least one lens element of the photographing lens assembly has at least one lens surface having at least one inflection point.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: February 14, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che Hsueh, Hung-Shuo Chen, Kuan Chun Wang, Wei-Yu Chen
  • Publication number: 20220404584
    Abstract: An optical imaging 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 first lens element has negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is concave in a paraxial region thereof. The fourth lens element has negative refractive power. The image-side surface of the sixth lens element is concave in a paraxial region thereof and has at least one critical point in an off-axis region thereof.
    Type: Application
    Filed: July 21, 2021
    Publication date: December 22, 2022
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Yi-Hsiang CHUANG, Kuan Chun WANG, Chun-Yen CHEN, Kuan-Ting YEH, Yu-Chun KE, Tzu-Chieh KUO
  • Patent number: 11487089
    Abstract: An image capturing optical lens assembly includes five lens elements, in order from an object side to an image side along an optical path, being 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 with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The fourth lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. At least one of surfaces of the fifth lens element includes at least one critical point in an off-axis region thereof.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: November 1, 2022
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Cheng-Chen Lin, Kuan-Chun Wang, Tzu-Chieh Kuo
  • Publication number: 20220187570
    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: Application
    Filed: January 13, 2021
    Publication date: June 16, 2022
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Kuan Chun WANG, Tzu-Chieh KUO
  • Publication number: 20220099944
    Abstract: An image 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 third lens element has negative refractive power. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth 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 image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.
    Type: Application
    Filed: June 10, 2021
    Publication date: March 31, 2022
    Inventors: Chung-Yu WEI, Hung-Shuo CHEN, Kuan-Chun WANG, Wei-Yu CHEN
  • Publication number: 20220035125
    Abstract: An imaging optical lens assembly includes five lens elements. The five 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 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 first lens element has positive refractive power, the second lens element has negative refractive power and the third lens element has negative refractive power. With specific conditions being satisfied, the imaging optical lens assembly can be miniaturized while providing good image quality.
    Type: Application
    Filed: December 30, 2020
    Publication date: February 3, 2022
    Inventors: WEN-YAO YANG, KUAN-CHUN WANG, HSIN-HSUAN HUANG, HUAN-SHENG CHANG
  • Publication number: 20210223516
    Abstract: An image capturing optical lens assembly includes five lens elements, in order from an object side to an image side along an optical path, being 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 with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The fourth lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. At least one of surfaces of the fifth lens element includes at least one critical point in an off-axis region thereof.
    Type: Application
    Filed: August 13, 2020
    Publication date: July 22, 2021
    Inventors: Cheng-Chen LIN, Kuan-Chun WANG, Tzu-Chieh KUO