Patents by Inventor Kenzo Hayatsu

Kenzo Hayatsu 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).

  • Ultraviolet sensor and ultraviolet detecting device
    Patent number: 9620662
    Abstract: An ultraviolet sensor includes a silicon photodiode array having a plurality of first pixel regions and a plurality of second pixel regions. A filter film is disposed on each of the first pixel regions so as to cover each first pixel region, except on each second pixel region. The filter film lowers transmittance in a detection target wavelength range in the ultraviolet region. Each of each first pixel region and each second pixel region includes at least one pixel having an avalanche photodiode to operate in Geiger mode, and a quenching resistor connected in series to the avalanche photodiode. Each of the quenching resistors in the plurality of first pixel regions is connected through a first signal line to a first output terminal. Each of the quenching resistors in the plurality of second pixel regions is connected through a second signal line to a second output terminal.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 11, 2017
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Koei Yamamoto, Kenzo Hayatsu, Terumasa Nagano, Yuki Okuwa, Ryuta Yamada
  • ULTRAVIOLET SENSOR AND ULTRAVIOLET DETECTING DEVICE
    Publication number: 20160086989
    Abstract: An ultraviolet sensor includes a silicon photodiode array having a plurality of first pixel regions and a plurality of second pixel regions. A filter film is disposed on each of the first pixel regions so as to cover each first pixel region, except on each second pixel region. The filter film lowers transmittance in a detection target wavelength range in the ultraviolet region. Each of each first pixel region and each second pixel region includes at least one pixel having an avalanche photodiode to operate in Geiger mode, and a quenching resistor connected in series to the avalanche photodiode. Each of the quenching resistors in the plurality of first pixel regions is connected through a first signal line to a first output terminal. Each of the quenching resistors in the plurality of second pixel regions is connected through a second signal line to a second output terminal.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 24, 2016
    Inventors: Koei YAMAMOTO, Kenzo HAYATSU, Terumasa NAGANO, Yuki OKUWA, Ryuta YAMADA
  • Radiation detecting unit
    Patent number: 8866098
    Abstract: An object is to prevent occurrence of an insensitive zone to radiation in parallel arrangement of multiple units.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: October 21, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Kenzo Hayatsu, Mitsutoshi Sugiya, Keisuke Nagura, Shigeru Suzuki
  • RADIATION DETECTING UNIT
    Publication number: 20120097857
    Abstract: An object is to prevent occurrence of an insensitive zone to radiation in parallel arrangement of multiple units.
    Type: Application
    Filed: March 26, 2010
    Publication date: April 26, 2012
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Kenzo Hayatsu, Mitsutoshi Sugiya, Keisuke Nagura, Shigeru Suzuki