Patents by Inventor Katsunori Mitani

Katsunori Mitani 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 emitting apparatus, LED lighting, LED light emitting apparatus, and control method of light emitting apparatus
    Patent number: 7656371
    Abstract: A light emitting apparatus comprises at least two light emitting elements with different chromaticities; and a light emitting element controller that controls light emitted from the light emitting apparatus so as to be a desired chromaticity. The light emitting element controller controls the light emitting elements based on a predetermined function of light emitting element temperature variation. Accordingly, it is possible to provide a light emitting apparatus that, even if the temperature varies, has a stable desired chromaticity without chromaticity variation. In addition, since control is performed based on a property function of wavelength fluctuation due to light emitting element temperature variation, it is possible to provide more reliable reproduction characteristics, and a desired chromaticity.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: February 2, 2010
    Assignee: Nichia Corporation
    Inventors: Yoshinori Shimizu, Ryuhei Tsuji, Tomoaki Inuzuka, Masayuki Taru, Katsunori Mitani, Harumi Sakuragi, Yasuhiro Kunisaki
  • Light emitting apparatus, led lighting, led light emitting apparatus, and control method of light emitting apparatus
    Publication number: 20070120496
    Abstract: A light emitting apparatus comprises at least two light emitting elements with different chromaticities; and a light emitting element controller that controls light emitted from the light emitting apparatus so as to be a desired chromaticity. The light emitting element controller controls the light emitting elements based on a predetermined function of light emitting element temperature variation. Accordingly, it is possible to provide a light emitting apparatus that, even if the temperature varies, has a stable desired chromaticity without chromaticity variation. In addition, since control is performed based on a property function of wavelength fluctuation due to light emitting element temperature variation, it is possible to provide more reliable reproduction characteristics, and a desired chromaticity.
    Type: Application
    Filed: July 26, 2004
    Publication date: May 31, 2007
    Inventors: Yoshinori Shimizu, Ryuhei Tsuji, Tomoaki Inuzuka, Masayuki Taru, Katsunori Mitani, Harumi Sakuragi, Yasuhiro Kunisaki