Patents by Inventor Hao Jan Chen

Hao Jan Chen 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: 12687761
    Abstract: 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: Grant
    Filed: August 21, 2024
    Date of Patent: July 21, 2026
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai
  • Patent number: 12645048
    Abstract: An imaging lens module includes a casing, an imaging lens disposed to the casing, a lens carrier supporting the image lens, an elastic element connected to the lens carrier to provide the lens carrier with a translational degree of freedom along an optical axis, a frame connected to the elastic element such that the lens carrier is movable along the optical axis with respect to the frame, a variable through hole module coupled to the imaging lens and having a light passable hole with a variable aperture size, and a wiring assembly including a fixed wiring part at least partially located closer to the opening than the elastic element and a movable wiring part electrically connected to the fixed wiring part and the variable through hole module. The optical axis passes through lens elements of the imaging lens and the center of the variable through hole module.
    Type: Grant
    Filed: January 10, 2023
    Date of Patent: June 2, 2026
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Heng Yi Su, Ming-Ta Chou, Te-Sheng Tseng
  • Patent number: 12474593
    Abstract: A camera module includes an imaging lens assembly having an optical axis and a driving device including a fixed component, a lens carrier, a magnet carrier, a first ball group, and a second ball group. The imaging lens assembly is disposed in the lens carrier. The magnet carrier has a first groove group extending parallel to the optical axis and a second groove group extending perpendicular to the optical axis. One of the fixed component and the lens carrier has a third groove group disposed opposite to the second groove group. The imaging lens assembly is movable with respect to the fixed component on a plane perpendicular to the optical axis via the second ball group disposed between the second groove group and the third groove group and along a direction parallel to the optical axis through the first ball group disposed in the first groove group.
    Type: Grant
    Filed: February 9, 2022
    Date of Patent: November 18, 2025
    Assignee: LARGAN DIGITAL CO., LTD.
    Inventors: Hao Jan Chen, Lin An Chang, Ming-Ta Chou, Te-Sheng Tseng
  • Patent number: 12287564
    Abstract: 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: Grant
    Filed: January 25, 2024
    Date of Patent: April 29, 2025
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai
  • Publication number: 20250130479
    Abstract: A camera module with an optical axis includes a fixed part and a movable part movable with respect to the fixed part. The movable part includes an imaging lens including a lens carrier and a variable through hole assembly. The lens carrier is configured for at least one lens element to be disposed therein, and the lens carrier includes a mount structure. The variable through hole assembly includes a plurality of movable blades and a rotatable element. The movable blades movably and together surround the optical axis to form a through hole, and a size of the through hole is variable by movement of the movable blades. The rotatable element is connected to the movable blades and sleeved on at least part of the lens carrier to be disposed on the mount structure, and the rotatable element moves the movable blades to vary the size of the through hole.
    Type: Application
    Filed: December 26, 2024
    Publication date: April 24, 2025
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI, Ming-Ta CHOU
  • Patent number: 12276904
    Abstract: 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: Grant
    Filed: January 25, 2024
    Date of Patent: April 15, 2025
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai
  • Publication number: 20250110386
    Abstract: An optical lens module includes an adjustable aperture assembly including rotatable blades, a driving part and an attractive force mechanism. The rotatable blades surround an optical axis of a lens element and form a light pass aperture. The driving part includes a rotatable component, a fixed component, a driving magnet and a coil. The rotatable component rotates the rotatable blades for adjusting an aperture size of the light pass aperture. The driving magnet is disposed on the rotatable component. The coil corresponds to the driving magnet to rotate the rotatable component. The attractive force mechanism provides an attractive force between the rotatable component and the fixed component and provides a driving force exerted on the rotatable blades for maintaining the light pass aperture in an enlarged state. The attractive force includes a magnetic force exerted by the rotatable component on a first magnetic element fixed on the fixed component.
    Type: Application
    Filed: April 22, 2024
    Publication date: April 3, 2025
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Zheng-Zhi HONG, Hsiu-Yi HSIAO, Hao Jan CHEN, Ming-Ta CHOU
  • Patent number: 12216396
    Abstract: An imaging lens with an optical axis includes a lens carrier and a variable through hole assembly. The lens carrier is configured for at least one lens element to be disposed therein, and the lens carrier includes a mount structure. The variable through hole assembly includes a plurality of movable blades and a rotatable element. The movable blades movably and together surround the optical axis to form a through hole, and a size of the through hole is variable by movement of the movable blades. The rotatable element is connected to the movable blades, and the rotatable element moves the movable blades to vary the size of the through hole. At least one of the movable blades and the rotatable element of the variable through hole assembly is disposed on the mount structure.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: February 4, 2025
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai, Ming-Ta Chou
  • Publication number: 20240411206
    Abstract: 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: Application
    Filed: August 21, 2024
    Publication date: December 12, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI
  • Publication number: 20240402574
    Abstract: A light pass aperture module, in order along a central axis, includes a blade assembly and a cap. The blade assembly includes a plurality of blades. The blades form a light pass aperture, and the light pass aperture is variable in size with the central axis as a center. The cap covers the blade assembly. The cap has a through hole, and the through hole is disposed corresponding to the light pass aperture. The cap includes a surface level down structure. The surface level down structure is disposed corresponding to one of the blades, and the surface level down structure is closer to the one blade than the through hole.
    Type: Application
    Filed: August 9, 2024
    Publication date: December 5, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI
  • Publication number: 20240369806
    Abstract: A lens driving module is configured to provide an imaging lens system with auto-focus functionality. The imaging lens system is disposed between a preloading element and a driving base of the lens driving module. The preloading element includes an injection molded part and a ferromagnetic part partially embedded in the injection molded part. A rollable element is disposed in each of mounting structures of the injection molded part and in contact with a displaceable lens carrier of the imaging lens system. The ferromagnetic part and a magnet disposed on the displaceable lens carrier together generate a magnetic attraction force, such that the displaceable lens carrier exerts a preloading force on the rollable element. The driving base includes a driving coil and an electrical wiring pattern. The driving coil corresponds to the magnet for generating a driving force to drive the displaceable lens carrier to move along the optical axis.
    Type: Application
    Filed: July 16, 2024
    Publication date: November 7, 2024
    Applicant: LARGAN DIGITAL CO.,LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI, Ming-Ta CHOU, Te-Sheng TSENG
  • Patent number: 12105410
    Abstract: A light pass aperture module, in order along a central axis, includes a blade assembly and a cap. The blade assembly includes a plurality of blades. The blades form a light pass aperture, and the light pass aperture is variable in size with the central axis as a center. The cap covers the blade assembly. The cap has a through hole, and the through hole is disposed corresponding to the light pass aperture. The cap includes a surface level down structure. The surface level down structure is disposed corresponding to one of the blades, and the surface level down structure is closer to the one blade than the through hole.
    Type: Grant
    Filed: July 5, 2023
    Date of Patent: October 1, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai
  • Patent number: 12066691
    Abstract: A lens driving module is configured to provide an imaging lens system with auto-focus functionality. The imaging lens system is disposed between a preloading element and a driving base of the lens driving module. The preloading element includes an injection molded part and a ferromagnetic part partially embedded in the injection molded part. A rollable element is disposed in each of mounting structures of the injection molded part and in contact with a displaceable lens carrier of the imaging lens system. The ferromagnetic part and a magnet disposed on the displaceable lens carrier together generate a magnetic attraction force, such that the displaceable lens carrier exerts a preloading force on the rollable element. The driving base includes a driving coil and an electrical wiring pattern. The driving coil corresponds to the magnet for generating a driving force to drive the displaceable lens carrier to move along the optical axis.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: August 20, 2024
    Assignee: LARGAN DIGITAL CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai, Ming-Ta Chou, Te-Sheng Tseng
  • Publication number: 20240160086
    Abstract: 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: Application
    Filed: January 25, 2024
    Publication date: May 16, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI
  • Publication number: 20240160085
    Abstract: 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: Application
    Filed: January 25, 2024
    Publication date: May 16, 2024
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI
  • Patent number: 11921417
    Abstract: 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: Grant
    Filed: June 7, 2022
    Date of Patent: March 5, 2024
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai
  • Publication number: 20230384652
    Abstract: A light pass aperture module, in order along a central axis, includes a blade assembly and a cap. The blade assembly includes a plurality of blades. The blades form a light pass aperture, and the light pass aperture is variable in size with the central axis as a center. The cap covers the blade assembly. The cap has a through hole, and the through hole is disposed corresponding to the light pass aperture. The cap includes a surface level down structure. The surface level down structure is disposed corresponding to one of the blades, and the surface level down structure is closer to the one blade than the through hole.
    Type: Application
    Filed: July 5, 2023
    Publication date: November 30, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI
  • Publication number: 20230341746
    Abstract: An imaging lens with an optical axis includes a lens carrier and a variable through hole assembly. The lens carrier is configured for at least one lens element to be disposed therein, and the lens carrier includes a mount structure. The variable through hole assembly includes a plurality of movable blades and a rotatable element. The movable blades movably and together surround the optical axis to form a through hole, and a size of the through hole is variable by movement of the movable blades. The rotatable element is connected to the movable blades, and the rotatable element moves the movable blades to vary the size of the through hole. At least one of the movable blades and the rotatable element of the variable through hole assembly is disposed on the mount structure.
    Type: Application
    Filed: August 15, 2022
    Publication date: October 26, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI, Ming-Ta CHOU
  • Publication number: 20230273504
    Abstract: 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: Application
    Filed: June 7, 2022
    Publication date: August 31, 2023
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan CHEN, Yu Chen LAI
  • Patent number: 11733588
    Abstract: A light pass aperture module, in order along a central axis, includes a blade assembly and a cap. The blade assembly includes a plurality of blades. The blades form a light pass aperture, and the light pass aperture is variable in size with the central axis as a center. The cap covers the blade assembly. The cap has a through hole, and the through hole is disposed corresponding to the light pass aperture. The cap includes a surface level down structure. The surface level down structure is disposed corresponding to one of the blades, and the surface level down structure is closer to the one blade than the through hole.
    Type: Grant
    Filed: September 1, 2022
    Date of Patent: August 22, 2023
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hao Jan Chen, Yu Chen Lai