Patents Assigned to Largan Precision Co.
  • Patent number: 11686922
    Abstract: An imaging optical 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. 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 negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth 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 the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: June 27, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Yu Jui Lin, Yu-Chun Ke, Jin Sen Wang, Wei-Yu Chen
  • Publication number: 20230194835
    Abstract: An image capturing optical system includes four 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 and a fourth lens element. The first lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The second lens element has positive refractive power. The third 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 image capturing optical system further includes an aperture stop located between the second lens element and the third lens element.
    Type: Application
    Filed: February 8, 2022
    Publication date: June 22, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che HSUEH, Chun-Yen CHEN, Meng-Kuan CHO
  • Publication number: 20230194834
    Abstract: An optical lens system includes two lens elements which are, in order from an object side to an image side along an optical path: a first lens element and a second lens element. Each of the two 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 of the object-side surface and the image-side surface of at least one lens element of the optical lens system is aspheric. A total number of the lens elements in the optical lens system is two.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che HSUEH, Jin Sen WANG, Hsin-Hsuan HUANG, Fuh-Shyang YANG
  • Patent number: 11681082
    Abstract: An imaging lens assembly includes a dual molded optical element, a plurality of imaging lens elements and a light blocking element. The dual molded optical element has an object-side surface and an image-side surface and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective section. The light absorbing portion is located on at least one of the object-side surface and the image-side surface of the dual molded optical element, and a plastic material of the light absorbing portion and a plastic material of the light transmitting portion are different colors. The imaging lens elements are disposed in the inner space of the imaging lens assembly. The light blocking element is disposed adjacent to the light transmitting portion of the dual molded optical element.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: June 20, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Ming-Ta Chou
  • Patent number: 11681125
    Abstract: An optical image capturing lens assembly includes six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element with negative refractive power, a second lens element with positive refractive power, a third lens element with negative refractive power, a fourth lens element with positive refractive power, a fifth lens element, and a sixth lens element with negative refractive power.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: June 20, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chien-Hsun Wu, Tzu-Chieh Kuo
  • Patent number: 11675113
    Abstract: An optical image lens assembly includes a plurality of optical lens elements. The optical lens elements include a plurality of plastic optical lens elements having refractive power and aspheric surfaces. The plastic optical lens elements are formed by an injection molding method and include at least one defined-wavelength light absorbing optical lens element, and the defined-wavelength light absorbing optical lens element includes at least one defined-wavelength light absorbent.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: June 13, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Yeo-Chih Huang, Pei-Chi Chang, Chun-Hung Teng
  • Patent number: 11675165
    Abstract: An optical imaging system includes, in order from an object side to an image side, a first lens element with positive refractive power, a second lens element, a third lens element, a fourth lens element, and a fifth lens element. Each of the fourth lens element and the fifth lens element includes at least one aspheric surface. The fourth lens element and the fifth lens element are made of plastic. The fifth lens element includes a concave image-side surface and at least one inflection point. An axial distance is formed between each of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element, and the optical imaging system further comprises a stop.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: June 13, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Shan Chen, Tsung-Han Tsai, Hsin-Hsuan Huang
  • Patent number: 11675170
    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, 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. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element with refractive power has an image-side surface being convex in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fifth lens element are both aspheric. The sixth lens element with refractive power has an object-side surface and an image-side surface being both aspheric. The optical photographing lens assembly has a total of six lens elements with refractive power.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: June 13, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Wei-Yu Chen
  • Patent number: 11675169
    Abstract: An image picking-up system includes seven lens elements, which are, in order from an object side to an image side, a first lens group including a first lens element and a second lens element, a second lens group including a third lens element and a fourth lens element, and a third lens group including a fifth lens element, a sixth lens element and a seventh lens element. The third lens element has positive refractive power. The fourth lens element has an image-side surface being concave in a paraxial region thereof. At least one surface of object-side surfaces and image-side surfaces of the seven lens elements includes at least one inflection point.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: June 13, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 11675167
    Abstract: An image capturing optical lens assembly includes six lens elements, 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 and a concave image-side surface. The third lens element with negative refractive power has a convex object-side surface and a concave image-side surface. The sixth lens element has an aspheric object-side surface and an aspheric concave image-side surface, 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: June 13, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Tsung-Han Tsai, Hsin-Hsuan Huang
  • Publication number: 20230176447
    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: Application
    Filed: June 3, 2022
    Publication date: June 8, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Chen Wei FAN, Ming-Ta CHOU, Te-Sheng TSENG, Chen-Yi HUANG
  • Patent number: 11668909
    Abstract: 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: Grant
    Filed: January 8, 2021
    Date of Patent: June 6, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Wei-Yu Chen
  • Patent number: 11668911
    Abstract: A photographing 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. The second lens element has positive refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: June 6, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Shu-Yun Yang
  • Patent number: 11668898
    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 second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The fifth lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: June 6, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Yu-Chun Ke, Jin Sen Wang, Ssu-Hsin Liu, Wei-Yu Chen
  • Patent number: 11668906
    Abstract: An optical imaging lens assembly includes three lens elements which are, in order from an object side to an image side: 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 object-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the first lens element is aspheric and has at least one inflection point. The object-side surface of the first lens element has at least one critical point in an off-axis region thereof. The optical imaging lens assembly has a total of three lens elements.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: June 6, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Yu Jui Lin, Tzu-Chieh Kuo
  • Patent number: 11668907
    Abstract: A photographing optical 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. 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 positive refractive power. The second lens element has negative refractive power. The third lens element has negative refractive power. The fourth lens element has negative refractive power. The fifth lens element has positive refractive power. The sixth lens element has negative refractive power. An axial distance between the fourth lens element and the fifth lens element is larger than an axial distance between the fifth lens element and the sixth lens element.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: June 6, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuo-Jui Wang, Hsin-Hsuan Huang
  • Patent number: 11670109
    Abstract: An optical fingerprint identification system includes a cover, a light emitting layer, an optical layer, an image sensor and a base that are sequentially disposed from top to bottom. The cover has a fingerprint contact surface on top. The image sensor has an image surface. The optical layer includes a first array layer and a second array layer, and the first array layer is stacked on top of the second array layer. The first array layer and the second array layer respectively include a plurality of first array lens elements and a plurality of second array lens elements respectively arranged at equal intervals in a first direction. Each of the first array lens elements and a corresponding second array lens element of the second array layer are coaxial along an optical axis and form an imaging unit.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: June 6, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Che Hsueh, Hsiang-Chi Tang, Tsung-Han Tsai, Fuh-Shyang Yang
  • Patent number: 11671689
    Abstract: An optical lens assembly includes at least one dual molded lens element. The dual molded lens element has a central axis, and includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an optical effective region and a lens peripheral region, and the lens peripheral region surrounds the optical effective region. A light absorbing portion surrounds the optical effective region. The light transmitting portion and the light absorbing portion are made of different plastic materials with different colors, and the light absorbing portion includes at least three gate portions surrounding the central axis, wherein all gate portions are located on the same surface of the dual molded lens element. The light transmitting portion and the light absorbing portion of the dual molded lens element are integrally formed by the injection molding.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: June 6, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Ming-Shun Chang, Ming-Ta Chou, Chun-Hua Tsai
  • Publication number: 20230168470
    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.
    Type: Application
    Filed: December 23, 2021
    Publication date: June 1, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Yu-Chun KE, Hong Rong KUO, Tzu-Chieh KUO
  • Patent number: 11665419
    Abstract: An imaging lens system includes a plastic lens element, a lens barrel and a light-absorbing layer. The plastic lens element is accommodated in the lens barrel and has an outer annular surface. The lens barrel includes a plate portion and a lateral wall portion. An optical axis of the imaging lens system passes through a light-passable hole of the plate portion. The lateral wall portion is connected to the plate portion and extends along a direction substantially parallel to the optical axis. The light-absorbing layer has an inner surface and an outer surface. The inner surface faces and is fixed on the outer annular surface of the plastic lens element. The outer surface is located opposite to the inner surface and in physical contact with the lateral portion of the lens barrel.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: May 30, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Jyun-Jia Cheng, Heng Yi Su, Ming-Ta Chou, Chen-Yi Huang