Patents by Inventor Sueko Kanaya

Sueko Kanaya 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).

  • Visual function examination system and optical characteristic calculation system
    Patent number: 11129523
    Abstract: An analysis unit determines at least two boundaries by determining; in a coordinate system indicating a correlation between a luminance contrast value between a luminance of an attention portion and a luminance of a background portion, and a luminance average value of a visual target including the attention portion and the background portion; the boundary between a region where a subject has a visibility and a region where the subject does not have the visibility for each combination of stimulus values of a color stimulus of a visual target.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: September 28, 2021
    Assignees: VISUAL TECHNOLOGY LABORATORY INC., MITSUI CHEMICALS, INC.
    Inventors: Yoshiki Nakamura, Sueko Kanaya, Noriaki Asada, Shoko Matsumura, Akinori Nagatomo, Taizo Nishimoto
  • VISUAL FUNCTION EXAMINATION SYSTEM AND OPTICAL CHARACTERISTIC CALCULATION SYSTEM
    Publication number: 20190239741
    Abstract: An analysis unit determines at least two boundaries by determining; in a coordinate system indicating a correlation between a luminance contrast value between a luminance of an attention portion and a luminance of a background portion, and a luminance average value of a visual target including the attention portion and the background portion; the boundary between a region where a subject has a visibility and a region where the subject does not have the visibility for each combination of stimulus values of a color stimulus of a visual target.
    Type: Application
    Filed: July 3, 2017
    Publication date: August 8, 2019
    Applicants: VISUAL TECHNOLOGY LABORATORY INC., MITSUI CHEMICALS, INC.
    Inventors: Yoshiki NAKAMURA, Sueko KANAYA, Noriaki ASADA, Shoko MATSUMURA, Akinori NAGAMOTO, Taizo NISHIMOTO
  • Combined light emitting discharge lamp and luminaire using such lamp
    Patent number: 6445119
    Abstract: A discharge lamp which radiates visible light having the following lights combined: light having an emission peak in 400 to 490 nm wavelength range in a blue spectral region; light having an emission peak in a 500 to 550 nm wavelength range in a green spectral region; and light having an emission peak in 600 to 670 nm wavelength range in a red spectral region. The color point of the radiated light lies within a region common to the following regions: a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.056, a minor axis of 0.024, and an angle from the u axis of 20 degrees in the CIE 1960 UCS diagram; a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.078, a minor axis of 0.014, and an angle from the u axis of 30 degrees in the CIE 1960 UCS diagram; a region bounded by an ellipse with a color point (u, v)=(0.235, 0.335) as a center thereof, a major axis of 0.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: September 3, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshio Mori, Hiromi Tanaka, Kenji Mukai, Toru Higashi, Tetsuji Takeuchi, Haruo Shibata, Sueko Kanaya, Katsuaki Iwama