Patents by Inventor Daisuke Fujisawa

Daisuke Fujisawa 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).

  • Publication number: 20190333960
    Abstract: An infrared sensor substrate includes: column signal lines; row signal lines; a pixel array of pixels including infrared detector elements connected to the column signal lines and the row signal lines. The infrared sensor substrate includes: a current source connected to the infrared detector elements via the column signal lines; a voltage source that applies a voltage to the infrared detector elements via the row signal lines; output terminals connected to the column signal lines, the output terminals being connectable to a signal processing circuit substrate that processes output signals of the infrared detector elements. The infrared sensor substrate includes a monitoring terminal capable of monitoring the voltage applied to the infrared detector elements by the first voltage source.
    Type: Application
    Filed: September 21, 2017
    Publication date: October 31, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke FUJISAWA, Junji NAKANISHI, Takahiro ONAKADO
  • Publication number: 20190307370
    Abstract: A controller corrects a spectrum S (?) detected at a wavelength ? of signal light to S? (?) in accordance with expressions below: I(?)=(I2?I1)×(???1)/(?2??1)?I1, and S?(?)=S(?)?I(?), where I1 is the intensity of infrared light detected at a wavelength ?1 of reference light and I2 is the intensity of infrared light detected at a wavelength ?2 of correction light.
    Type: Application
    Filed: November 22, 2017
    Publication date: October 10, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kosuke SHINOHARA, Kentaro ENOKI, Koichi AKIYAMA, Shimpei OGAWA, Daisuke FUJISAWA
  • Patent number: 10309895
    Abstract: An electromagnetic wave detector including a first electromagnetic wave sensor including a light reception unit held in midair above a substrate by a support leg and a second electromagnetic wave sensor including a light reception unit held in midair above the substrate by a support leg having same structure as the support leg of the first electromagnetic wave sensor and provided adjacent to the first electromagnetic wave sensor. The light reception unit of the first electromagnetic wave sensor includes a reflective film, the light reception unit of the second electromagnetic wave sensor includes an electromagnetic wave absorption body for detecting light of a prescribed wavelength band or a prescribed polarization, and the difference between the output of the second electromagnetic wave sensor and the first electromagnetic wave sensor is output.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: June 4, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke Fujisawa, Shimpei Ogawa
  • Patent number: 10234379
    Abstract: An electromagnetic wave detector that selectively detects electromagnetic waves of wavelength ?A includes a temperature detection unit that includes: a substrate including a cavity portion; a wavelength selection structure that generates a surface plasmon resonance with an electromagnetic wave of a predetermined wavelength ?A for converting to heat and absorbing, and a detection film that detects the absorbed heat; and a support structure that retains the temperature detection unit above the cavity portion; wherein the support structure further includes a reflection structure that reflects the electromagnetic waves of the absorption wavelength of the support structure.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: March 19, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shimpei Ogawa, Daisuke Fujisawa
  • Publication number: 20190051763
    Abstract: This electromagnetic wave detector that detects electromagnetic waves by performing photoelectric conversion includes: a substrate; an insulating layer that is provided on the substrate; a graphene layer that is provided on the insulating layer; a pair of electrodes, which are provided on the insulating layer, and which are connected to both ends of the graphene layer, respectively; and a contact layer that is provided such that the contact layer is in contact with the graphene layer. The contact layer is formed of a material having a polar group, and a charge is formed in the graphene layer by having the contact layer in contact with the graphene layer.
    Type: Application
    Filed: February 24, 2016
    Publication date: February 14, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masaaki SHIMATANI, Shimpei OGAWA, Daisuke FUJISAWA, Satoshi OKUDA
  • Patent number: 10068934
    Abstract: An electromagnetic wave detector includes: a substrate; an insulating layer provided on the substrate; a graphene layer provided on the insulating layer; a pair of electrodes provided on the insulating layer, with the graphene layer being interposed therebetween; and buffer layers interposed between the graphene layer and the electrodes to separate the graphene layer and the electrodes from each other. The electromagnetic wave detector array includes arrayed electromagnetic wave detectors that are the same as or different from each other.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: September 4, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shimpei Ogawa, Daisuke Fujisawa, Masaaki Shimatani
  • Publication number: 20180067041
    Abstract: An electromagnetic wave detector that selectively detects electromagnetic waves of wavelength ?A includes a temperature detection unit that includes: a substrate including a cavity portion; a wavelength selection structure that generates a surface plasmon resonance with an electromagnetic wave of a predetermined wavelength ?A for converting to heat and absorbing, and a detection film that detects the absorbed heat; and a support structure that retains the temperature detection unit above the cavity portion; wherein the support structure further includes a reflection structure that reflects the electromagnetic waves of the absorption wavelength of the support structure.
    Type: Application
    Filed: March 9, 2016
    Publication date: March 8, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shimpei OGAWA, Daisuke FUJISAWA
  • Publication number: 20180006067
    Abstract: An electromagnetic wave detector includes: a substrate; an insulating layer provided on the substrate; a graphene layer provided on the insulating layer; a pair of electrodes provided on the insulating layer, with the graphene layer being interposed therebetween; and buffer layers interposed between the graphene layer and the electrodes to separate the graphene layer and the electrodes from each other. The electromagnetic wave detector array includes arrayed electromagnetic wave detectors that are the same as or different from each other.
    Type: Application
    Filed: January 4, 2016
    Publication date: January 4, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shimpei OGAWA, Daisuke FUJISAWA, Masaaki SHIMATANI
  • Publication number: 20180003622
    Abstract: An electromagnetic wave detector including a first electromagnetic wave sensor including a light reception unit held in midair above a substrate by a support leg and a second electromagnetic wave sensor including a light reception unit held in midair above the substrate by a support leg having same structure as the support leg of the first electromagnetic wave sensor and provided adjacent to the first electromagnetic wave sensor. The light reception unit of the first electromagnetic wave sensor includes a reflective film, the light reception unit of the second electromagnetic wave sensor includes an electromagnetic wave absorption body for detecting light of a prescribed wavelength band or a prescribed polarization, and the difference between the output of the second electromagnetic wave sensor and the first electromagnetic wave sensor is output.
    Type: Application
    Filed: January 4, 2016
    Publication date: January 4, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke FUJISAWA, Shimpei OGAWA
  • Patent number: 9157789
    Abstract: An electromagnetic wave detector that detects incident light by converting the incident light into an electric signal includes a flat metal layer formed on a supporting substrate, an intermediate layer formed on the metal layer, a graphene layer formed on the intermediate layer, isolated metals periodically formed on the graphene layer, and electrodes arranged oppositely on both sides of the isolated metals. Depending on a size of a planar shape of each of the isolated metals, light having a predetermined wavelength at which surface plasmon occurs is determined out of the incident light, and the light having the predetermined wavelength is absorbed to detect a change in the electric signal generated in the graphene layer.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: October 13, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shimpei Ogawa, Daisuke Fujisawa, Tomohiro Maegawa
  • Publication number: 20140319357
    Abstract: An electromagnetic wave detector that detects incident light by converting the incident light into an electric signal includes a flat metal layer formed on a supporting substrate, an intermediate layer formed on the metal layer, a graphene layer formed on the intermediate layer, isolated metals periodically formed on the graphene layer, and electrodes arranged oppositely on both sides of the isolated metals. Depending on a size of a planar shape of each of the isolated metals, light having a predetermined wavelength at which surface plasmon occurs is determined out of the incident light, and the light having the predetermined wavelength is absorbed to detect a change in the electric signal generated in the graphene layer.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 30, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shimpei OGAWA, Daisuke Fujisawa, Tomohiro Maegawa