Patents by Inventor Tomohiro IWANE

Tomohiro IWANE 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).

  • Charged particle beam device, optical device, irradiation method, diffraction grating system, and diffraction grating
    Patent number: 10210962
    Abstract: The outer shape and size of a diffraction grating including an edge dislocation is made smaller than the irradiation areas of light waves and electromagnetic waves, by using an opener different from in the diffraction grating, the shape and size of the opening is superposed on the shape of a spiral wave that is generated by an edge dislocation diffraction grating, and the shape and size of the opening are reflected in the shape and size of the spiral wave on the diffractive surface. In addition, not only a diffraction grating system including a pair of a single opener and a single diffraction grating, but also a diffraction grating system in which plural openers and plural edge dislocation diffraction gratings are combined are used, and plural spiral waves can be generated on the diffractive surface with a higher degree of freedom.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: February 19, 2019
    Assignee: HITACHI , LTD.
    Inventors: Ken Harada, Teruo Kohashi, Tomohiro Iwane
  • CHARGED PARTICLE BEAM DEVICE, OPTICAL DEVICE, IRRADIATION METHOD, DIFFRACTION GRATING SYSTEM, AND DIFFRACTION GRATING
    Publication number: 20170194065
    Abstract: The outer shape and size of a diffraction grating including an edge dislocation is made smaller than the irradiation areas of light waves and electromagnetic waves, by using an opener different from in the diffraction grating, the shape and size of the opening is superposed on the shape of a spiral wave that is generated by an edge dislocation diffraction grating, and the shape and size of the opening are reflected in the shape and size of the spiral wave on the diffractive surface. In addition, not only a diffraction grating system including a pair of a single opener and a single diffraction grating, but also a diffraction grating system in which plural openers and plural edge dislocation diffraction gratings are combined are used, and plural spiral waves can be generated on the diffractive surface with a higher degree of freedom.
    Type: Application
    Filed: February 5, 2014
    Publication date: July 6, 2017
    Applicant: HITACHI, LTD.
    Inventors: Ken HARADA, Teruo KOHASHI, Tomohiro IWANE