Patents by Inventor Masaharu Okada

Masaharu Okada 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).

  • Measuring device, measuring system, moving body, and measuring method
    Patent number: 11913910
    Abstract: A measuring device for measuring an inspection target on the basis of vibration generated when the inspection target has been irradiated with laser light includes a condensing position deriving portion configured to derive an amount of adjustment of a distance between condensing lenses of a laser condensing unit configured to condense the laser light on the basis of a distance between a laser device configured to radiate the laser light and an irradiation location of the laser light and a communicating portion configured to transmit control information including information representing the amount of adjustment to the laser condensing unit.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: February 27, 2024
    Assignee: National Institutes for Quantum and Radiological Science and Technology
    Inventors: Katsuhiro Mikami, Toshiyuki Kitamura, Shuji Kondo, Hajime Okada, Tetsuya Kawachi, Yoshinori Shimada, Shinri Kurahashi, Masaharu Nishikino, Noboru Hasegawa
  • Optical attenuator and optical attenuator module
    Patent number: 6442324
    Abstract: In order to realize an optical attenuator which has an attenuation factor independent of the wavelength of incident light, a glass substrate is used in an attenuator plate, and the glass substrate is formed in a tapered section so that its incident and exit planes may not be parallel to each other. On one side thereof, a metal film corresponding to the attenuation factor is formed. Also one side of the glass substrate is covered with an antireflection coating for canceling the wavelength dependence of the metal film. Thereby ripple of attenuation factor due to wavelength can be eliminated, and the wavelength dependence may be minimized.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: August 27, 2002
    Assignee: Santec Corporation
    Inventors: Daikou Tei, Naoyuki Mekada, Masaharu Okada
  • Optical attenuator and optical attenuator module
    Publication number: 20020001447
    Abstract: In order to realize an optical attenuator which has an attenuation factor independent of the wavelength of incident light, a glass substrate is used in an attenuator plate, and the glass substrate is formed in a tapered section so that its incident and exit planes may not be parallel to each other. On one side thereof, a metal film corresponding to the attenuation factor is formed. Also one side of the glass substrate is covered with an antireflection coating for canceling the wavelength dependence of the metal film. Thereby ripple of attenuation factor due to wavelength can be eliminated, and the wavelength dependence may be minimized.
    Type: Application
    Filed: August 3, 2001
    Publication date: January 3, 2002
    Applicant: SANTEC CORPORATION
    Inventors: Daikou Tei, Naoyuki Mekada, Masaharu Okada
  • Optical attenuator and optical attenuator module
    Patent number: 6292616
    Abstract: In order to realize an optical attenuator which has an attenuation factor independent of the wavelength of incident light, a glass substrate is used in an attenuator plate, and the glass substrate is formed in a tapered section so that its incident and exit planes may not be parallel to each other. On one side thereof, a metal film corresponding to the attenuation factor is formed. Also one side of the glass substrate is covered with an antireflection coating for canceling the wavelength dependence of the metal film. Thereby ripple of attenuation factor due to wavelength can be eliminated, and the wavelength dependence may be minimized.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: September 18, 2001
    Assignee: Santec Corporation
    Inventors: Daikou Tei, Naoyuki Mekada, Masaharu Okada