Patents by Inventor Mai Nakabayashi

Mai Nakabayashi 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: 11770611
    Abstract: An image pickup apparatus is provided with an image blur correction apparatus that corrects image blur of a captured image by using a shake detection signal that has been detected by a shake detection unit. A controller for image blur correction generates a first signal obtained by multiplying an output signal of the shake detection unit by a first correction ratio gain. A second signal is generated by multiplying the sum of the output signal of the shake detection unit that has passed through a low-pass filter and the output signal of the shake detection unit that has passed through a high-pass filter by a second correction ratio gain. A target generating unit generates a target value signal for image blur correction based on the sum of the first and second signals and drives the shake correction unit.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: September 26, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomomi Uesugi, Mai Nakabayashi
  • Patent number: 11418134
    Abstract: A vibration type motor includes first and second vibrators, a friction member configured to contact the first and second vibrators, a pressure member configured to press the first and second vibrators against the friction member, and first and second guide members configured to guide a relative movement between the first and second vibrators and the friction member. The first and second vibrators are spaced in a direction different from a relative movement direction between the first and second vibrators and the friction member. The first and the second guide member are provided between the first vibrator and the second vibrator in a direction different from the relative movement direction. A pressure center of a pressure applied to the first vibrator and the second vibrator by the pressure member is located between the first guide member and the second guide member.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: August 16, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shunsuke Ninomiya, Ryo Yamasaki, Yasufumi Yamamoto, Mai Nakabayashi
  • Patent number: 11336211
    Abstract: A vibration wave motor includes a vibrator; a first holding member configured to hold the vibrator; a second holding member; an elastic coupling member configured to couple the first holding member and the second holding member to each other; a friction member; and a pressurizing unit, wherein the vibrator and the friction member relatively move due to vibration of the vibrator, wherein the elastic coupling member includes a first coupling portion and a second coupling portion, and wherein one of the first coupling portion and the second coupling portion is arranged on a straight line that is parallel to a direction of the relative movement and passes through a pressurizing gravity center and another of the first coupling portion and the second coupling portion is arranged on a straight line that is orthogonal to the direction of the relative movement and passes through the pressurizing gravity center.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: May 17, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mai Nakabayashi, Ryo Yamasaki, Yasufumi Yamamoto, Shunsuke Ninomiya
  • Patent number: 11303228
    Abstract: A driving device includes a vibrator; a friction member; a first guide portion that guides the vibrator or the friction member in a first direction when the vibrator vibrates so that the vibrator and the friction member move relative to each other, the first guide portion enabling rotation of the vibrator and the friction member around an axis in the first direction; a moving member that moves when the vibrator and the friction member move relative to each other, the moving member being connected to the member to be driven; and a second guide portion that guides the member to be driven in a second direction when the moving member moves. The moving member is connected to the member to be driven such that the moving member is rotatable and movable in a direction orthogonal to the first direction with respect to the member to be driven.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: April 12, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Yamamoto, Ryo Yamasaki, Shunsuke Ninomiya, Mai Nakabayashi
  • Patent number: 11190111
    Abstract: Provided is a vibration wave motor, including: a vibration body; a friction member; a press member configured to pressurize the vibration body against the friction member; a base member configured to fix the friction member; and a damping member configured to damp vibration, wherein the vibration body and the friction member are configured to move relative to each other, wherein the friction member includes: a first surface having a first region held in abutment against the vibration body; and a second surface, which is a back surface of the first surface, and has a second region held in abutment against the base member, wherein at least one of the first surface and the second surface has a third region held in contact with the damping member, and wherein positions of the first region and the third region in a pressurizing direction of the press member are different from each other.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: November 30, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shunsuke Ninomiya, Mai Nakabayashi
  • Patent number: 11165368
    Abstract: A vibration wave motor including: a vibrator; a friction member; and a pressurizing member configured to press the vibrator and the friction member into contact with each other. The vibrator and the friction member are relatively moved in a direction orthogonal to the pressurizing direction of the pressurizing member by vibrations generated on the vibrator, the vibrator and the friction member are configured so as to move in parallel with the pressurizing direction with respect to a fixed member, and the vibration wave motor further includes at least one first restricting portion that restricts a movable amount of the friction member in the pressurizing direction and at least one second restricting portion that restricts a movable amount of the vibrator in the pressurizing direction, such that the movable amount of the friction member is smaller than the movable amount of the vibrator in the pressurizing direction.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: November 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Yamasaki, Yasufumi Yamamoto, Shunsuke Ninomiya, Mai Nakabayashi
  • Publication number: 20210337127
    Abstract: An image pickup apparatus is provided with an image blur correction apparatus that corrects image blur of a captured image by using a shake detection signal that has been detected by a shake detection unit. A controller for image blur correction generates a first signal obtained by multiplying an output signal of the shake detection unit by a first correction ratio gain. A second signal is generated by multiplying the sum of the output signal of the shake detection unit that has passed through a low-pass filter and the output signal of the shake detection unit that has passed through a high-pass filter by a second correction ratio gain. A target generating unit generates a target value signal for image blur correction based on the sum of the first and second signals and drives the shake correction unit.
    Type: Application
    Filed: April 20, 2021
    Publication date: October 28, 2021
    Inventors: Tomomi Uesugi, Mai Nakabayashi
  • Patent number: 11159723
    Abstract: A vibration detecting apparatus capable of accurately detecting camera shake by making resonant frequencies in damping members in directions of detection axes of gyro sensors substantially uniform. The gyro sensors which detect shake are held on a sensor holder. The first damping member abuts against at least a part of an outer periphery of a first surface of the sensor holder, wherein the area of a region of the first damping member which abuts against the first surface is smaller than the area of the first surface. The second damping member abuts against at least a part of an outer periphery of a second surface of the sensor holder which is, in a predetermined direction, opposite to the first surface, wherein the area of a region of the second damping member which abuts against the second surface is smaller than the area of the second surface.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: October 26, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shimpei Itagaki, Mai Nakabayashi
  • Publication number: 20200314341
    Abstract: A vibration detecting apparatus capable of accurately detecting camera shake by making resonant frequencies in damping members in directions of detection axes of gyro sensors substantially uniform. The gyro sensors which detect shake are held on a sensor holder. The first damping member abuts against at least a part of an outer periphery of a first surface of the sensor holder, wherein the area of a region of the first damping member which abuts against the first surface is smaller than the area of the first surface. The second damping member abuts against at least a part of an outer periphery of a second surface of the sensor holder which is, in a predetermined direction, opposite to the first surface, wherein the area of a region of the second damping member which abuts against the second surface is smaller than the area of the second surface.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Shimpei Itagaki, Mai Nakabayashi
  • Publication number: 20190348928
    Abstract: A driving device includes a vibrator; a friction member; a first guide portion that guides the vibrator or the friction member in a first direction when the vibrator vibrates so that the vibrator and the friction member move relative to each other, the first guide portion enabling rotation of the vibrator and the friction member around an axis in the first direction; a moving member that moves when the vibrator and the friction member move relative to each other, the moving member being connected to the member to be driven; and a second guide portion that guides the member to be driven in a second direction when the moving member moves. The moving member is connected to the member to be driven such that the moving member is rotatable and movable in a direction orthogonal to the first direction with respect to the member to be driven.
    Type: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Inventors: Yasufumi Yamamoto, Ryo Yamasaki, Shunsuke Ninomiya, Mai Nakabayashi
  • Publication number: 20190245460
    Abstract: A vibration wave motor including: a vibrator; a friction member; and a pressurizing member configured to press the vibrator and the friction member into contact with each other. The vibrator and the friction member are relatively moved in a direction orthogonal to the pressurizing direction of the pressurizing member by vibrations generated on the vibrator, the vibrator and the friction member are configured so as to move in parallel with the pressurizing direction with respect to a fixed member, and the vibration wave motor further includes at least one first restricting portion that restricts a movable amount of the friction member in the pressurizing direction and at least one second restricting portion that restricts a movable amount of the vibrator in the pressurizing direction, such that the movable amount of the friction member is smaller than the movable amount of the vibrator in the pressurizing direction.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Inventors: Ryo Yamasaki, Yasufumi Yamamoto, Shunsuke Ninomiya, Mai Nakabayashi
  • Publication number: 20190181777
    Abstract: A vibration wave motor including: a vibrator; a first holding member configured to hold the vibrator; a second holding member; an elastic coupling member configured to couple the first holding member and the second holding member to each other; a friction member; and a pressurizing unit, wherein the vibrator and the friction member relatively move due to vibration of the vibrator, wherein the elastic coupling member includes a first coupling portion and a second coupling portion, and wherein one of the first coupling portion and the second coupling portion is arranged on a straight line that is parallel to a direction of the relative movement and passes through a pressurizing gravity center and another of the first coupling portion and the second coupling portion is arranged on a straight line that is orthogonal to the direction of the relative movement and passes through the pressurizing gravity center.
    Type: Application
    Filed: December 7, 2018
    Publication date: June 13, 2019
    Inventors: Mai Nakabayashi, Ryo Yamasaki, Yasufumi Yamamoto, Shunsuke Ninomiya
  • Publication number: 20190165697
    Abstract: A vibration type motor includes first and second vibrators, a friction member configured to contact the first and second vibrators, a pressure member configured to press the first and second vibrators against the friction member, and first and second guide members configured to guide a relative movement between the first and second vibrators and the friction member. The first and second vibrators are spaced in a direction different from a relative movement direction between the first and second vibrators and the friction member. The first and the second guide member are provided between the first vibrator and the second vibrator in a direction different from the relative movement direction. A pressure center of a pressure applied to the first vibrator and the second vibrator by the pressure member is located between the first guide member and the second guide member.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Inventors: Shunsuke Ninomiya, Ryo Yamasaki, Yasufumi Yamamoto, Mai Nakabayashi
  • Publication number: 20190052194
    Abstract: Provided is a vibration wave motor, including: a vibration body; a friction member; a press member configured to pressurize the vibration body against the friction member; a base member configured to fix the friction member; and a damping member configured to damp vibration, wherein the vibration body and the friction member are configured to move relative to each other, wherein the friction member includes: a first surface having a first region held in abutment against the vibration body; and a second surface, which is a back surface of the first surface, and has a second region held in abutment against the base member, wherein at least one of the first surface and the second surface has a third region held in contact with the damping member, and wherein positions of the first region and the third region in a pressurizing direction of the press member are different from each other.
    Type: Application
    Filed: August 10, 2018
    Publication date: February 14, 2019
    Inventors: Shunsuke Ninomiya, Mai Nakabayashi