Patents by Inventor Tomohiko Osaka

Tomohiko Osaka 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: 20240045169
    Abstract: An optical element driving device includes: a driving part configured to drive a holding part configured to hold an optical element; a substrate including a circuit including an inductor configured to increase an input voltage to the driving part; and a cover member comprising a metal and including an opening and a flange part extending at an outer periphery of the opening, the cover member being configured to cover the inductor in a state where the inductor is housed in the opening and the flange part is disposed on the substrate. The substrate includes a metal layer disposed to face the inductor. The metal layer is formed to include a region where the inductor is disposed in plan view.
    Type: Application
    Filed: August 3, 2023
    Publication date: February 8, 2024
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Tomohiko OSAKA, Shun SUZUKI
  • Publication number: 20240045170
    Abstract: An optical element driving device configured to drive an optical element, the optical element driving device including: a holding part configured to hold an optical element; a housing part configured to house inside the holding part; and a supporting part interposed between an outer peripheral surface of the holding part and an inner peripheral surface of the housing part, and including a plurality of rolling members configured to be held by a retainer in a rollable manner, the supporting part being configured to support the holding part with the plurality of rolling members such that the holding part is movable with respect to the housing part. At least one of the outer peripheral surface and the inner peripheral surface includes a first recess formed at a portion facing the retainer.
    Type: Application
    Filed: August 3, 2023
    Publication date: February 8, 2024
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Tomohiko OSAKA, Shun SUZUKI
  • Publication number: 20240045311
    Abstract: An optical element driving device includes: a holding part configured to hold an optical element; a housing part configured to house the holding part such that the holding part is movable in an optical path direction of the optical element; a driving part including a piezoelectric element configured to drive the holding part; an inductor configured to increase an input voltage to the piezoelectric element; and a position sensor configured to acquire a relative position of the holding part and the housing part in the optical path direction by detecting a magnetic force of a magnet. In regions defined by dividing the holding part and the housing part into equal quarters around an optical axis, the driving part and the position sensor are disposed in a same region, and the inductor is disposed in a region different from the same region.
    Type: Application
    Filed: August 3, 2023
    Publication date: February 8, 2024
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Shun SUZUKI, Tomohiko OSAKA
  • Publication number: 20240045309
    Abstract: This optical element drive device comprises: a movable part; a drive unit; a substrate part that can supply power to the movable part; and a power supply path unit that constitutes a power supply path between the substrate part and the movable part by extending so as to connect a substrate-part-side terminal and a movable-part side terminal that are set apart from each other in a second direction, the power supply path unit having in at least a portion a coil part that can extend and contract in accordance with the movement of the movable part.
    Type: Application
    Filed: November 22, 2021
    Publication date: February 8, 2024
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Tomohiko OSAKA, Shun SUZUKI
  • Publication number: 20230408840
    Abstract: Provided are an optical element drive device, a camera module, and a camera-equipped device that are small and low-profile but also improve drive performance and noise reduction performance. An optical element drive device that comprises a fixed part, a mobile part that is separated from the fixed part in the optical axis direction, a support part that supports the mobile part on the fixed part, a drive unit that moves the mobile part relative to the fixed part within an optical axis orthogonal plane that is orthogonal to the optical axis direction, and a tension coil spring that connects the fixed part and the mobile part and urges the fixed part and the mobile part toward each other. A damper material is provided to the tension coil spring.
    Type: Application
    Filed: September 28, 2021
    Publication date: December 21, 2023
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko OSAKA, Masayoshi SUGAWARA, Masahiro ISHIKAWA, Shusuke KOJIMA
  • Publication number: 20230408890
    Abstract: An optical element driving device includes: a fixed part; a movable part disposed apart from the fixed part; a support part which supports the movable part with respect to the fixed part; and a driving unit which has an ultrasonic motor that converts a vibration motion into a linear motion and a power transmission part that transmits the driving force of the ultrasonic motor to the movable part, and moves the movable Dart with respect to the fixed Dart, wherein the power transmission part has a plate which is in contact with a resonance part of the ultrasonic motor, and a damper material is disposed on a second surface side opposite to a first surface which is in contact with the resonance part in the plate.
    Type: Application
    Filed: September 28, 2021
    Publication date: December 21, 2023
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko OSAKA, Masayoshi SUGAWARA, Masahiro ISHIKAWA, Shusuke KOJIMA
  • Publication number: 20230393449
    Abstract: An optical-element driving device includes: a fixing part; a movable part disposed apart from the fixing part; a supporting part configured to support the movable part with respect to the fixing part; a driving unit that includes an ultrasonic motor including a piezoelectric element and an active element configured to resonate with vibration of the piezoelectric element; and a passive element that moves relatively with respect to the active element; and that is configured such that the active element and the passive element make contact with each other in a biased manner to move the movable part with respect to the fixing part; and an enclosing portion enclosing, on the passive element, at least a part of a contact region between a passive-side contact portion of the passive element and an active-side contact portion of the active element.
    Type: Application
    Filed: September 28, 2021
    Publication date: December 7, 2023
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Tomohiko OSAKA
  • Publication number: 20230288781
    Abstract: An optical element driving device driving an optical element in the optical path direction includes: a holding part capable of holding the optical element; an housing part that surrounds a circumference of the holding part and houses the holding part; and inside the housing part, a support part including a first support part and a second support part disposed on the circumference at different positions, and supports the holding part to be movable in the optical path direction by pressing the holding part by the first support part and engaging the second support part with the holding part in accordance with the pressing. The support part is configured to allow adjustment of an engagement position between the second support part and the holding part by relatively displacing facing portions of the second support part and the holding part in a circumferential direction according to the pressing.
    Type: Application
    Filed: March 7, 2023
    Publication date: September 14, 2023
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Tomohiko OSAKA, Shun SUZUKI, Meng WANG
  • Publication number: 20230273392
    Abstract: This lens driving device comprises a movable part, a driving part that has an ultrasonic motor and drives the movable part in the direction of an optical axis, and a shaft part that extends in the direction of the optical axis and supports the movable part. The driving part has a move section that is supported by the shaft part so as to be movable in the direction of the optical axis, and a support section that is connected to the move section and supports the movable part at a position closer to the optical axis side than the shaft part.
    Type: Application
    Filed: June 24, 2021
    Publication date: August 31, 2023
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Tomohiko OSAKA, Shun SUZUKI
  • Publication number: 20230185170
    Abstract: This optical element driving device is provided with: a movable part capable of holding an optical element; a driving part that includes an ultrasonic motor and drives the movable part; a voltage boosting part having an inductor that boosts input voltage inputted to the driving part and supplies the boosted input voltage to the ultrasonic motor; a position detection part that detects the position of the movable part; and a substrate part on which the position detection part and the voltage boosting part are disposed.
    Type: Application
    Filed: March 24, 2021
    Publication date: June 15, 2023
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shun SUZUKI, Tomohiko OSAKA
  • Publication number: 20230029605
    Abstract: This lens driving device comprises: a first movable part and a second movable part; a first driving part and a second driving part that are respectively disposed on the first movable part and on the second movable part, on one end side thereof; and a guide part. A first ultrasound motor and a second ultrasound motor are arranged on the one end side. The guide part includes a plurality of guide shafts that support both a first frame and a second frame in a movable manner.
    Type: Application
    Filed: January 14, 2021
    Publication date: February 2, 2023
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Tomohiko OSAKA, Shun SUZUKI
  • Publication number: 20230022577
    Abstract: This lens drive device is provided with: a first movable part; a second movable part; a first drive part; and a second drive part. The first drive part and the second drive part respectively have a first ultrasonic motor and a second ultrasonic motor. The first ultrasonic motor and the second ultrasonic motor are arranged on sides opposite to each other with respect an optical axis, and independently drive the first movable part and the second movable part in the optical axis direction.
    Type: Application
    Filed: December 21, 2020
    Publication date: January 26, 2023
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Tomohiko OSAKA, Shun SUZUKI
  • Publication number: 20220236516
    Abstract: A lens driving device includes: a movable part for accommodating a lens; and an ultrasonic motor having a resonance part configured to move the movable part by motion of the resonance part of the ultrasonic motor. The resonance part has a pair of arms, and is disposed such that only one of the arms is in contact with the movable part.
    Type: Application
    Filed: May 7, 2020
    Publication date: July 28, 2022
    Applicants: Miniswys S.A., MITSUMI ELECTRIC CO., LTD.
    Inventors: Shun SUZUKI, Yoichi ITAGAKI, Tomohiko OSAKA, Masahiro ISHIKAWA, Daisuke YAMAGUCHI, Raphael HOESLI, Maxime ROTEN, Michael BRUMANN, Loann BAUME
  • Patent number: 11381749
    Abstract: A camera module has: a lens holder for holding a lens unit; an image sensor holding unit that is arranged spaced apart from the lens holder in a first direction along the optical axis of the lens unit and holds an image sensor; and a drive unit that moves the image sensor holding unit with respect to the lens holder in a second direction and a third direction which are perpendicular to the optical axis and are perpendicular to each other, and that rotates the image sensor holding unit around the optical axis.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: July 5, 2022
    Assignee: Mitsumi Electric Co., Ltd.
    Inventor: Tomohiko Osaka
  • Publication number: 20220206287
    Abstract: This lens driving device is configured separately from a lens unit including a liquid lens, and is provided with: a fixed part; a movable part; a support part that supports the movable part with respect to the fixed part; a driving unit that is formed from a voice coil motor comprising a coil and a magnet and that moves the movable part in an optical axis direction with respect to the fixed part; and a lens deformation unit that is connected to the movable part and that applies, in association with the movement of the movable part, a force to the liquid lens in the optical axis direction. The movable part has a plurality of movable units, and the driving unit drives the movable units independently so as to change the curvature of the liquid lens or to change the optical axis of the liquid lens.
    Type: Application
    Filed: May 22, 2020
    Publication date: June 30, 2022
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko OSAKA, Ichiro HAYASHI, Atsushi KIKUCHI
  • Publication number: 20220091360
    Abstract: A lens driving device includes a first holder configured to hold a lens section, a second holder provided around a lens holder, a support member that elastically supports the first holder with respect to the second holder, and an actuator that includes a coil with a winding so arranged on the first holder as to surround the lens section, and a magnet so provided on the second holder as to face the coil, and is configured to move the first holder with respect to the second holder in a direction of an optical axis. An end portion of the winding is provided with an upright terminal that is set upright with respect to a winding plane of the winding and electrically connected to the support member with a fixing material. The first holder includes a terminal positioning part that internally accepts the upright terminal.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 24, 2022
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko OSAKA, Shigeki EDAMATSU
  • Publication number: 20210329170
    Abstract: A camera module has: a lens holder for holding a lens unit; an image sensor holding unit that is arranged spaced apart from the lens holder in a first direction along the optical axis of the lens unit and holds an image sensor; and a drive unit that moves the image sensor holding unit with respect to the lens holder in a second direction and a third direction which are perpendicular to the optical axis and are perpendicular to each other, and that rotates the image sensor holding unit around the optical axis.
    Type: Application
    Filed: August 22, 2019
    Publication date: October 21, 2021
    Applicant: Mitsumi Electric Co., Ltd.
    Inventor: Tomohiko OSAKA
  • Patent number: 11137568
    Abstract: Provided is a lens holder driving device having the fixing part including a base member, the driving mechanism including a yoke, the position detection part including a sensor magnet attached on a corresponding outer peripheral surface of the lens holder in a direction orthogonal to the optical axis. A magnetic detection device provided to the fixing part such that the magnetic detection device is opposite to the sensor magnet. The yoke includes an outer cylinder part having a cylindrical shape. The outer cylinder part includes a plurality of plate parts which are opposite to each other in the direction orthogonal to the optical axis. The plate parts having cutout parts at positions opposite to the sensor magnet. The lens holder driving device includes a foreign matter intrusion prevention member configured to prevent intrusion of foreign matters from the cutout part of the plate part.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: October 5, 2021
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko Osaka, Takashi Ishizawa
  • Patent number: 10880461
    Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. An autofocus movable part includes a lens holder adapted to hold a lens part and an auto-focusing coil part, an autofocus fixing part includes a magnet holder adapted to hold an auto-focusing magnet part, and a shake-correcting fixing part includes a base to which a shake-correcting coil part is disposed. At least one of the lens holder, magnet holder, and base is formed from a molding material consisting of polyarylate (PAR) or a PAR alloy which is a mixture of multiple resin materials including polyarylate.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: December 29, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko Osaka, Takashi Ishizawa, Atsushi Kikuchi, Minoru Katagiri
  • Patent number: 10746957
    Abstract: A lens driving device according to the present invention is a lens driving device that includes an auto-focus coil and an auto-focus magnet and that moves a movable auto-focus unit including the auto-focus coil in the direction of an optical axis relative to a fixed auto-focus unit including the auto-focus magnet by using a driving force of a voice coil motor constituted of the auto-focus coil and the auto-focus magnet. The fixed auto-focus unit includes a case formed of a non-magnetic material and having a rectangular shape in plan view and a base on which the case is fixed. The auto-focus magnet has the shape of a flat plate disposed on a side face of the case, and at least one of the four side faces of the case is a non-magnet-disposed face, on which the auto-focus magnet is not disposed.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: August 18, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko Osaka, Norikazu Kudo