Patents by Inventor Kwok Sing Cheng

Kwok Sing Cheng 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).

  • Lens driving apparatus
    Patent number: 11156799
    Abstract: A lens driving apparatus includes: a fixed assembly including a base frame; a movable assembly including a lens holder configured to hold a lens unit; at least one set of magnets surrounding the movable assembly; three sets of coils configured to interact with the magnets and drive the movable assembly to move along a first, a second, and a third orthogonal axes; and a spring system attached between the movable assembly and the fixed assembly. The third axis is parallel to an optical axis of the lens unit. The first and second axes are respectively perpendicular to the third axis. The three sets of coils include a set of focusing coils and two sets of side coils. The at least one set of magnets include four magnetic members attached to inside walls of the outer casing, among which each two magnetic members are placed opposing to each other.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 26, 2021
    Inventor: Kwok Sing Cheng
  • Lens driving apparatus
    Patent number: 10018800
    Abstract: A lens driving apparatus includes: a fixed assembly, the fixed assembly including a base frame; a movable assembly, the movable assembly including a lens holder; a set of magnets surrounding the movable assembly; three sets of coils; and a spring system attached between the movable assembly and the fixed assembly and configured to support the movable assembly and form a suspension system to allow the movable assembly to move along a first, a second, and a third orthogonal axes. The lens holder is configured to hold a lens unit, the third axis is parallel to an optical axis of the lens unit, while the first and second axes are respectively perpendicular to the third axis.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: July 10, 2018
    Inventor: Kwok Sing Cheng
  • Lens moving apparatus
    Patent number: 9703068
    Abstract: The subject matter disclosed herein relates to an imaging module comprising an electromagnetic actuator to provide focus-related and image stabilization-related functionality.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: July 11, 2017
    Assignee: Hong Kong Applied Science and Technology Research Institute, Co., Ltd.
    Inventors: Kwok Sing Cheng, Kin Ming Fan
  • Multi-lens imaging module and actuator with auto-focus adjustment
    Patent number: 9494769
    Abstract: The subject matter disclosed herein relates to an optical module that includes a plurality of lenses and an electromagnetic actuator to adjust a zoom level or focus of the optical module.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: November 15, 2016
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Kwok Sing Cheng, Kin Ming Fan
  • Lens positioning structure for zoom lens
    Patent number: 9465200
    Abstract: An apparatus for adjusting a zoom lens that includes a mechanical structure having a plurality of lens assemblies and an actuator to adjust a zoom level or focus of the apparatus.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: October 11, 2016
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Kwok Sing Cheng, Kin Ming Fan
  • LENS DRIVING APPARATUS
    Publication number: 20160202446
    Abstract: A lens driving apparatus includes: a fixed assembly including a base frame; a movable assembly including a lens holder configured to hold a lens unit; at least one set of magnets surrounding the movable assembly; three sets of coils configured to interact with the magnets and drive the movable assembly to move along a first, a second, and a third orthogonal axes; and a spring system attached between the movable assembly and the fixed assembly. The third axis is parallel to an optical axis of the lens unit. The first and second axes are respectively perpendicular to the third axis. The three sets of coils include a set of focusing coils and two sets of side coils. The at least one set of magnets include four magnetic members attached to inside walls of the outer casing, among which each two magnetic members are placed opposing to each other.
    Type: Application
    Filed: March 23, 2016
    Publication date: July 14, 2016
    Inventor: Kwok Sing Cheng
  • LENS DRIVING APPARATUS
    Publication number: 20160116703
    Abstract: A lens driving apparatus includes: a fixed assembly, the fixed assembly including a base frame; a movable assembly, the movable assembly including a lens holder; a set of magnets surrounding the movable assembly; three sets of coils; and a spring system attached between the movable assembly and the fixed assembly and configured to support the movable assembly and form a suspension system to allow the movable assembly to move along a first, a second, and a third orthogonal axes. The lens holder is configured to hold a lens unit, the third axis is parallel to an optical axis of the lens unit, while the first and second axes are respectively perpendicular to the third axis.
    Type: Application
    Filed: September 23, 2014
    Publication date: April 28, 2016
    Inventor: Kwok Sing CHENG
  • Compact camera module with zoom and auto-focus actuators sharing the same rotating annular magnet with alternating thick and thin poles
    Patent number: 9217841
    Abstract: A compact camera modules has first, second, and third lens groups that move along an optical axis. A stepping motor is centered on the optical axis rather than offset from the optical axis. The motor has two coils that are fixed in place and a shared rotating magnet. The magnet is attached to a rotating guide that has slots to move the first and second lens groups as it rotates. The two coils are alternately energized to rotate the magnet, the rotating guide, and to move the first and second lens groups for zoom. The magnet has alternating thicker and thinner segments of opposite polarity. The thicker segments exert a greater force on an autofocus coil that is energized to move the third lens for the autofocus function. The same shared rotating magnet is used for both zoom and autofocus functions. A more compact design is possible using a shared magnet.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: December 22, 2015
    Assignee: Hong Kong Applied Science & Technology Research Institute Company, Limited
    Inventors: Kin Ming Fan, Kwok Sing Cheng
  • Deformable lens assembly
    Patent number: 9116295
    Abstract: The subject matter disclosed herein relates to an imaging device having a deformable lens.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: August 25, 2015
    Assignee: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO. LTD.
    Inventor: Kwok Sing Cheng
  • Multi-drive mechanism lens actuator
    Patent number: 9002188
    Abstract: Subject matter disclosed herein may relate to lens actuators used, for example, in auto-focus and/or vibration compensation systems of digital cameras.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 7, 2015
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Kin Ming Fan, Sio Kuan Lam, Kwok Sing Cheng, Wing Ming Fan, Hua Yang, Tiegang Liu
  • MULTI-LENS IMAGING MODULE AND ACTUATOR WITH AUTO-FOCUS ADJUSTMENT
    Publication number: 20150070781
    Abstract: The subject matter disclosed herein relates to an optical module that includes a plurality of lenses and an electromagnetic actuator to adjust a zoom level or focus of the optical module.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 12, 2015
    Applicant: Hong Kong Applied Science and Technology Research Institute, Co.
    Inventors: Kwok Sing Cheng, Kin Ming Fan
  • NOVEL LENS MOVING APPARATUS
    Publication number: 20140313582
    Abstract: The subject matter disclosed herein relates to an imaging module comprising an electromagnetic actuator to provide focus-related and image stabilization-related functionality.
    Type: Application
    Filed: September 26, 2013
    Publication date: October 23, 2014
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Kwok Sing Cheng, Kin Ming Fan
  • Interchangeable zoom lens actuator with auto-focus adjustment
    Patent number: 8792782
    Abstract: The subject matter disclosed herein relates to an optical module that includes interchangeable lenses to adjust a zoom level or focus of the optical module.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: July 29, 2014
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Kwok Sing Cheng, Kin Ming Fan, Chuen Kuen Yeung
  • Interchangeable zoom lens actuator with auto-focus adjustment
    Patent number: 8737830
    Abstract: The subject matter disclosed herein relates to an optical module that includes interchangeable lenses to adjust a zoom level or focus of the optical module.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 27, 2014
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Kwok Sing Cheng, Chuen Kuen Yeung, Kin Ming Fan
  • Compact imaging device
    Patent number: 8736988
    Abstract: The subject matter disclosed herein relates to an imaging device including an epoxy reservoir and a number of features to facilitate alignment of components during assembly of the imaging device.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: May 27, 2014
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Kwok Sing Cheng, Chuen Kuen Yeung
  • Compact imaging device having a laminated component
    Patent number: 8692932
    Abstract: The subject matter disclosed herein relates to an imaging device including a laminated portion of an actuator or actuator support.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: April 8, 2014
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Kin Ming Fan, Man Yee Pang, Kwok Sing Cheng
  • COMPACT IMAGING DEVICE
    Publication number: 20140022655
    Abstract: The subject matter disclosed herein relates to an imaging device including an epoxy reservoir and a number of features to facilitate alignment of components during assembly of the imaging device.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 23, 2014
    Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Kwok Sing Cheng, Chuen Kuen Yeung
  • Magnetic structure for compact imaging device
    Patent number: 8593743
    Abstract: The subject matter disclosed herein relates to electromagnetic force generation for an imaging device having a small form factor.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: November 26, 2013
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Kin Ming Fan, Kwok Sing Cheng, Kai Cheong Kwan
  • Compact imaging device
    Patent number: 8564896
    Abstract: The subject matter disclosed herein relates to an imaging device having a small form factor.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: October 22, 2013
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Man Yee Pang, Kin Ming Fan, Kwok Sing Cheng, Sio Kuan Lam
  • Interchangeable zoom lens actuator
    Patent number: 8428451
    Abstract: The subject matter disclosed herein relates to an optical module that includes interchangeable lenses to adjust a zoom level of the optical module.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: April 23, 2013
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Chuen Kuen Yeung, Kai Cheong Kwan, Kwok Sing Cheng