Patents by Inventor Arata Kasamatsu

Arata Kasamatsu 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).

  • Publication number: 20220360200
    Abstract: A camera module includes a lens, a first magnet and a second magnet mounted on a mobile body including the lens, a coil portion arranged near the first magnet and configured to move the first magnet in a first direction, and the magnetic sensor arranged near the second magnet and configured to detect the position of the second magnet in the first direction as a detection direction.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 10, 2022
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventors: Takahiro I, Arata KASAMATSU
  • Patent number: 11431269
    Abstract: A camera module includes a lens, a first magnet and a second magnet mounted on a mobile body including the lens, a coil portion arranged near the first magnet and configured to move the first magnet in a first direction, and the magnetic sensor arranged near the second magnet and configured to detect the position of the second magnet in the first direction as a detection direction.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 30, 2022
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Takahiro I, Arata Kasamatsu
  • Patent number: 10674070
    Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 2, 2020
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Arata Kasamatsu, Kazuomi Isogai
  • Publication number: 20200153366
    Abstract: A camera module includes a lens, a first magnet and a second magnet mounted on a mobile body including the lens, a coil portion arranged near the first magnet and configured to move the first magnet in a first direction, and the magnetic sensor arranged near the second magnet and configured to detect the position of the second magnet in the first direction as a detection direction.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 14, 2020
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventors: Takahiro I, Arata KASAMATSU
  • Patent number: 10613342
    Abstract: The present invention relates to an image stabilizer and a camera module. The image stabilizer for a lens that moves, with respect to an imaging element, in an auto-focus direction and a camera shake direction, includes a first position sensor, a distance signal calculation unit, a target position signal calculation circuit and a drive signal generation unit. A first detection position signal that indicates a position of the lens that moves in the camera shake direction, a second detection position signal that indicates a position of the lens that moves in the auto-focus direction, and an angular velocity signal that indicate an angular velocity when the lens is inclined from the optical axis direction to output a drive signal. A drive unit moves the lens in the camera shake direction depending on the drive signal.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: April 7, 2020
    Assignee: Asahi Kasei Microdevices Corporation
    Inventor: Arata Kasamatsu
  • Publication number: 20190068871
    Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.
    Type: Application
    Filed: October 25, 2018
    Publication date: February 28, 2019
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventors: Arata KASAMATSU, Kazuomi ISOGAI
  • Patent number: 10154189
    Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: December 11, 2018
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Arata Kasamatsu, Kazuomi Isogai
  • Publication number: 20160327806
    Abstract: The present invention relates to an image stabilizer and a camera module. The image stabilizer for a lens that moves, with respect to an imaging element, in an auto-focus direction and a camera shake direction, includes a first position sensor, a distance signal calculation unit, a target position signal calculation circuit and a drive signal generation unit. A first detection position signal that indicates a position of the lens that moves in the camera shake direction, a second detection position signal that indicates a position of the lens that moves in the auto-focus direction, and an angular velocity signal that indicate an angular velocity when the lens is inclined from the optical axis direction to output a drive signal. A drive unit moves the lens in the camera shake direction depending on the drive signal.
    Type: Application
    Filed: December 5, 2014
    Publication date: November 10, 2016
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventor: Arata KASAMATSU
  • Patent number: 9467603
    Abstract: A position detection apparatus includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: October 11, 2016
    Assignee: Asahi Kasei Microdevices Corporation
    Inventor: Arata Kasamatsu
  • Publication number: 20160295099
    Abstract: An adjusting method of a camera module, a lens position control device, a control device of a linear movement device, and a controlling method of the same are provided in a state of the cameral module in which an imaging element and an actuator are combined. The camera module includes a position sensor (53) that detects a position of a lens (50) to output a detection position signal, a storage unit (541) that stores and rewrites a position code value corresponding to the position of the lens, a target position signal generation unit (542) that outputs a target position signal based on the position code value and the target position code value, and a control unit (543) that generates a control signal based on the target position signal and the detection position signal.
    Type: Application
    Filed: November 28, 2014
    Publication date: October 6, 2016
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventors: Arata KASAMATSU, Kazuomi ISOGAI
  • Patent number: 9438776
    Abstract: A position detection apparatus includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: September 6, 2016
    Assignee: Asahi Kasei Microdevices Corporation
    Inventor: Arata Kasamatsu
  • Patent number: 9407799
    Abstract: There is provided a position detection apparatus that includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: August 2, 2016
    Assignee: Asahi Kasei Microdevices Corporation
    Inventor: Arata Kasamatsu
  • Publication number: 20150229842
    Abstract: A position detection apparatus includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.
    Type: Application
    Filed: March 30, 2015
    Publication date: August 13, 2015
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventor: Arata KASAMATSU
  • Publication number: 20150015729
    Abstract: There is provided a position detection apparatus that includes an autofocus mechanism and an optical image stabilization mechanism by using a closed loop control, in which a magnet is commonly used as an autofocus magnet and an optical image stabilization magnet to achieve downsizing. The position detection apparatus includes the autofocus mechanism that moves a lens along an optical axis (Z axis) of the lens, and the optical image stabilization mechanism that moves the lens in a direction orthogonal to the optical axis. A permanent magnet is secured to the lens, and moves according to the movement of the lens. The amount of movement thereof is detected by position sensors. The permanent magnet for autofocus used in the autofocus mechanism and the permanent magnet for optical image stabilization used in the optical image stabilization mechanism is provided in the vicinity of the lens for common use.
    Type: Application
    Filed: May 31, 2013
    Publication date: January 15, 2015
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventor: Arata Kasamatsu