Patents by Inventor Takashi KAIDO

Takashi KAIDO 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).

  • Light source device, projection display device, and light source control method
    Patent number: 10117312
    Abstract: A light source device includes: an excitation light source unit that emits excitation light; a phosphor wheel unit that includes a wheel that produces fluorescence by the excitation light and that, by causing the wheel to rotate, changes the position on the wheel that is irradiated by the excitation light; a detection unit that detects rotation of the wheel; and a control unit that changes intensity of the excitation light on the basis of the detection result of the detection unit and the fluorescence characteristic of the wheel.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 30, 2018
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Kenji Suzuki, Takashi Kaido
  • LIGHT SOURCE DEVICE, PROJECTION DISPLAY DEVICE, AND LIGHT SOURCE CONTROL METHOD
    Publication number: 20170094751
    Abstract: A light source device includes: an excitation light source unit that emits excitation light; a phosphor wheel unit that includes a wheel that produces fluorescence by the excitation light and that, by causing the wheel to rotate, changes the position on the wheel that is irradiated by the excitation light; a detection unit that detects rotation of the wheel; and a control unit that changes intensity of the excitation light on the basis of the detection result of the detection unit and the fluorescence characteristic of the wheel.
    Type: Application
    Filed: May 28, 2014
    Publication date: March 30, 2017
    Inventors: Kenji SUZUKI, Takashi KAIDO