Patents by Inventor Kenji NISHIWADA

Kenji NISHIWADA 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).

  • Weathering test instrument and solid-state light-emitting device system
    Patent number: 9063050
    Abstract: Provided is a weathering test instrument that includes: a light source section including a plurality of solid-state light-emitting elements, in which the solid-state light-emitting elements are different in kind from one another, and are configured to emit light beams having respective wavelength regions that are different from one another; a light receptor configured to receive the light beams radiated from the light source section individually for the respective wavelength regions; and a controller configured to control radiant intensities of the respective solid-state light-emitting elements individually, based on received light amounts for the respective wavelength regions derived from the light receptor, and thereby control irradiance at a sample surface for each of the wavelength regions to allow an accelerated test of a sample to be performed.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: June 23, 2015
    Assignee: SUGA TEST INSTRUMENTS CO., LTD.
    Inventors: Shigeo Suga, Kenji Nishiwada
  • WEATHERING TEST INSTRUMENT AND SOLID-STATE LIGHT-EMITTING DEVICE SYSTEM
    Publication number: 20150027242
    Abstract: Provided is a weathering test instrument that includes: a light source section including a plurality of solid-state light-emitting elements, in which the solid-state light-emitting elements are different in kind from one another, and are configured to emit light beams having respective wavelength regions that are different from one another; a light receptor configured to receive the light beams radiated from the light source section individually for the respective wavelength regions; and a controller configured to control radiant intensities of the respective solid-state light-emitting elements individually, based on received light amounts for the respective wavelength regions derived from the light receptor, and thereby control irradiance at a sample surface for each of the wavelength regions to allow an accelerated test of a sample to be performed.
    Type: Application
    Filed: June 23, 2014
    Publication date: January 29, 2015
    Inventors: Shigeo SUGA, Kenji NISHIWADA