Patents by Inventor Kenjiro NASU

Kenjiro NASU 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).

  • Illumination device
    Patent number: 11454373
    Abstract: An illumination device suppresses a variation in color tone caused by a difference in optical path length from a light source without requiring a complicated manufacturing process. The illumination device includes: a single light source emitting monochromatic light; a light guide body transmitting the light emitted from the light source; a plurality of light emitting portions provided at positions having different optical path lengths from the light source, respectively, to transmit the light; and color conversion layers disposed between the light emitting portions and the light guide body to convert a color of the light transmitted through the light guide body.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: September 27, 2022
    Assignee: TOYO DENSO KABUSHIKI KAISHA
    Inventor: Kenjiro Nasu
  • ILLUMINATION DEVICE
    Publication number: 20220260235
    Abstract: An illumination device suppresses a variation in color tone caused by a difference in optical path length from a light source without requiring a complicated manufacturing process. The illumination device includes: a single light source emitting monochromatic light; a light guide body transmitting the light emitted from the light source; a plurality of light emitting portions provided at positions having different optical path lengths from the light source, respectively, to transmit the light; and color conversion layers disposed between the light emitting portions and the light guide body to convert a color of the light transmitted through the light guide body.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 18, 2022
    Inventor: Kenjiro NASU