Patents by Inventor Soichiro Katsumata

Soichiro Katsumata 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: 20190033687
    Abstract: To secure a smooth rotating state of a rotary drive body with a simple structure without deteriorating the characteristics of an ultrasonic motor. Provided are an ultrasonic motor including a rotor and a stator, a rotary drive body that moves an optical device in an axial direction by being rotated around an axis by driving force of the ultrasonic motor, a bearing rotatable around the axis, and a compression spring that applies axial bias force to the ultrasonic motor, the rotary drive body, and the bearing. The rotor and the stator are biased in a contact direction and the rotary drive body and the bearing are biased in a contact direction by the compression spring.
    Type: Application
    Filed: December 14, 2016
    Publication date: January 31, 2019
    Inventor: Soichiro Katsumata
  • Patent number: 9307125
    Abstract: Provided is a position detection device including a detection unit configured to have a photo-reflector including a light emitter and a light receiver, the light receiver receiving light emitted from the light emitter and reflected by a reflective surface moved in a predetermined direction, the detection unit detecting a movement amount of the reflective surface based on a change in intensity of the received light, and a transparent member configured to be disposed between the reflective surface and the detection unit and to move together with the reflective surface, the transparent member being provided with a light blocking surface configured to block light and a light transmitting surface configured to transmit light, the light blocking surface and the light transmitting surface being arranged in a moving direction of the reflective surface.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: April 5, 2016
    Assignee: Sony Corporation
    Inventors: Soichiro Katsumata, Takashi Koyama, Shuhei Kaneko
  • Publication number: 20150211840
    Abstract: Provided is a position detection device including a detection unit configured to have a photo-reflector including a light emitter and a light receiver, the light receiver receiving light emitted from the light emitter and reflected by a reflective surface moved in a predetermined direction, the detection unit detecting a movement amount of the reflective surface based on a change in intensity of the received light, and a transparent member configured to be disposed between the reflective surface and the detection unit and to move together with the reflective surface, the transparent member being provided with a light blocking surface configured to block light and a light transmitting surface configured to transmit light, the light blocking surface and the light transmitting surface being arranged in a moving direction of the reflective surface.
    Type: Application
    Filed: August 7, 2013
    Publication date: July 30, 2015
    Inventors: Soichiro Katsumata, Takashi Koyama, Shuhei Kaneko
  • Patent number: 8823862
    Abstract: There is provided a position detection device including a first detection sensor that operates in a predetermined direction, outputs a continuously increasing or decreasing signal, and detects an absolute position of a movable lens moved in an optical axis direction, and a second detection sensor that operates in the predetermined direction, outputs a periodically and continuously changing signal, and detects a relative position of the movable lens. The first detection sensor and the second detection sensor operate at different operation speeds.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: September 2, 2014
    Assignee: Sony Corporation
    Inventors: Soichiro Katsumata, Naoyuki Ohno
  • Publication number: 20130050558
    Abstract: There is provided a position detection device including a first detection sensor that operates in a predetermined direction, outputs a continuously increasing or decreasing signal, and detects an absolute position of a movable lens moved in an optical axis direction, and a second detection sensor that operates in the predetermined direction, outputs a periodically and continuously changing signal, and detects a relative position of the movable lens. The first detection sensor and the second detection sensor operate at different operation speeds.
    Type: Application
    Filed: August 3, 2012
    Publication date: February 28, 2013
    Applicant: Sony Corporation
    Inventors: Soichiro Katsumata, Naoyuki Ohmo