Patents by Inventor Hiroki Okawa

Hiroki Okawa 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).

  • Method of obtaining quantum efficiency distribution, method of displaying quantum efficiency distribution, program for obtaining quantum efficiency distribution, program for displaying quantum efficiency distribution, fluorescence spectrophotometer, and display device
    Patent number: 11366013
    Abstract: A method of obtaining a quantum efficiency distribution in a predetermined sample surface, including: irradiating a reference material with excitation light belonging to a first wavelength range; obtaining the reference material's image, which includes a first channel for the first wavelength range and a second channel for a second wavelength range, the first and the second channel's irradiation luminance value in each pixel; irradiating the predetermined sample surface with the excitation light; obtaining the first and the second channel's measurement luminance value in each pixel of the image of the predetermined surface; calculating an absorption luminance value from a difference between the first channel's irradiation luminance value and measurement luminance value; calculating a fluorescence luminance value from difference between the second channel's irradiation luminance value and measurement luminance value; calculating quantum efficiency of each pixel based on the values; and obtaining quantum effici
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: June 21, 2022
    Assignee: HITACHI HIGH-TECH SCIENCE CORPORATION
    Inventors: Jun Horigome, Hiroki Okawa, Takahiro Tamashima, Imari Sato, Yinqiang Zheng
  • METHOD OF OBTAINING QUANTUM EFFICIENCY DISTRIBUTION, METHOD OF DISPLAYING QUANTUM EFFICIENCY DISTRIBUTION, PROGRAM FOR OBTAINING QUANTUM EFFICIENCY DISTRIBUTION, PROGRAM FOR DISPLAYING QUANTUM EFFICIENCY DISTRIBUTION, FLUORESCENCE SPECTROPHOTOMETER, AND DISPLAY DEVICE
    Publication number: 20210063242
    Abstract: A method of obtaining a quantum efficiency distribution in a predetermined sample surface, including: irradiating a reference material with excitation light belonging to a first wavelength range; obtaining the reference material's image, which includes a first channel for the first wavelength range and a second channel for a second wavelength range, the first and the second channel's irradiation luminance value in each pixel; irradiating the predetermined sample surface with the excitation light; obtaining the first and the second channel's measurement luminance value in each pixel of the image of the predetermined surface; calculating an absorption luminance value from a difference between the first channel's irradiation luminance value and measurement luminance value; calculating a fluorescence luminance value from difference between the second channel's irradiation luminance value and measurement luminance value; calculating quantum efficiency of each pixel based on the values; and obtaining quantum effici
    Type: Application
    Filed: September 1, 2020
    Publication date: March 4, 2021
    Inventors: Jun HORIGOME, Hiroki Okawa, Takahiro Tamashima, Imari Sato, Yinqiang Zheng
  • AIR-CONDITIONING METHOD AND AIR-CONDITIONING SYSTEM
    Publication number: 20100077776
    Abstract: An air-conditioning method comprises the steps of performing a refrigerator operation using a refrigerator to which cooling water cooled in a plurality of cooling towers is supplied as a cold heat source, and performing a free cooling operation using at least some of the plurality of cooling towers as a cold heat source, wherein at a time of the free cooling operation, the number of the cooling towers which are operated is controlled.
    Type: Application
    Filed: September 29, 2009
    Publication date: April 1, 2010
    Inventors: Toshihito TAKENAMI, Hiroki Okawa, Hideo Hanaoka, Takumi Sugiura, Hiroshige Kikuchi, Yuji Miyajima