Patents by Inventor Yuta Kawamoto

Yuta Kawamoto 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).

  • Patent number: 11177108
    Abstract: A charged particle beam application apparatus includes a beam separator. The beam separator includes a first magnetic pole, a second magnetic pole facing the first magnetic pole, a first electrode and a second electrode that extend along an optical axis of a primary beam and are arranged in a first direction perpendicular to the optical axis, on a first surface of the first magnetic pole which faces the second magnetic pole, and a third electrode and a fourth electrode that extend along the optical axis and face the first electrode and the second electrode, respectively, on a second surface of the second magnetic pole which faces the first magnetic pole.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: November 16, 2021
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Yasuhiro Shirasaki, Takashi Dobashi, Momoyo Enyama, Akira Ikegami, Yuta Kawamoto
  • Publication number: 20210233738
    Abstract: An object of the present disclosure is to provide a charged particle beam apparatus that can quickly find a correction condition for a new aberration that is generated in association with beam adjustment. In order to achieve the above object, the present disclosure proposes a charged particle beam apparatus configured to include an objective lens (7) configured to focus a beam emitted from a charged particle source and irradiate a specimen, a visual field movement deflector (5 and 6) configured to deflect an arrival position of the beam with respect to the specimen, and an aberration correction unit (3 and 4) disposed between the visual field movement deflector and the charged particle source, in which the aberration correction unit is configured to suppress a change in the arrival position of the beam irradiated under different beam irradiation conditions.
    Type: Application
    Filed: April 14, 2021
    Publication date: July 29, 2021
    Inventors: Yuta Kawamoto, Akira IKEGAMI, Yasushi EBIZUKA, Nobuo FUJINAGA
  • Patent number: 11056310
    Abstract: The objective of the present invention is to provide a charged-particle beam device capable of moving a field-of-view to an exact position even when moving the field-of-view above an actual sample. In order to attain this objective, a charged-particle beam device is proposed comprising an objective lens whereby a charged-particle beam is focused and irradiated onto a sample; a field-of-view moving deflector for deflecting the charged-particle beam; and a stage onto which the sample is placed.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: July 6, 2021
    Assignee: Hitachi High-Tech Corporation
    Inventors: Yuta Kawamoto, Akira Ikegami, Yasushi Ebizuka, Naoma Ban
  • Publication number: 20210164774
    Abstract: This marker has: an optically transparent convex plastic lens section having a first surface that includes convex surface sections and flat surface sections, and a second surface that includes first regions and second regions other than the first regions, the second surface being disposed in a position on the reverse side to the first surface; a section to be detected that is formed in the first regions and/or the second regions; and a positioning section formed in those regions of the second surface that correspond to the flat surface sections, the positioning section indicating positions in the first regions that correspond to the convex surface sections. The first regions are concave sections or convex sections disposed in those regions of the second surface that correspond to the convex surface sections.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 3, 2021
    Inventors: Tomohiro SAITO, Yuta KAWAMOTO, Yuya OSHIMA, Mitsuaki SHIOTA
  • Publication number: 20210027976
    Abstract: The present disclosure aims at proposing a multi-beam irradiation device capable of correcting off-axis aberrations. In order to achieve the above object, a beam irradiation device is proposed, which includes a beam source which emits a plurality of beams; an objective lens (17) which focuses a beam on a sample; a first lens (16) which is arranged such that a lens main surface is positioned at an object point of the objective lens and deflects a plurality of incident beams toward an intersection point of a lens main surface of the objective lens and an optical axis; a second lens (15) which is arranged closer to a beam source side than the first lens and focuses the plurality of beams on a lens main surface of the first lens; and a third lens (14) which is arranged closer to the beam source side than the second lens and deflects the plurality of beams toward an intersection point of a lens main surface of the second lens and the optical axis.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 28, 2021
    Inventors: Akira IKEGAMI, Yuta KAWAMOTO, Naomasa SUZUKI, Manabu YANO, Yasushi EBIZUKA, Naoma BAN
  • Publication number: 20210005417
    Abstract: A charged particle beam application apparatus includes a beam separator. The beam separator includes a first magnetic pole, a second magnetic pole facing the first magnetic pole, a first electrode and a second electrode that extend along an optical axis of a primary beam and are arranged in a first direction perpendicular to the optical axis, on a first surface of the first magnetic pole which faces the second magnetic pole, and a third electrode and a fourth electrode that extend along the optical axis and face the first electrode and the second electrode, respectively, on a second surface of the second magnetic pole which faces the first magnetic pole.
    Type: Application
    Filed: March 30, 2018
    Publication date: January 7, 2021
    Inventors: Yasuhiro Shirasaki, Takashi Dobashi, Momoyo Enyama, Akira Ikegami, Yuta Kawamoto
  • Patent number: 10832886
    Abstract: The present disclosure aims at proposing a multi-beam irradiation device capable of correcting off-axis aberrations. In order to achieve the above object, a beam irradiation device is proposed, which includes a beam source which emits a plurality of beams; an objective lens (17) which focuses a beam on a sample; a first lens (16) which is arranged such that a lens main surface is positioned at an object point of the objective lens and deflects a plurality of incident beams toward an intersection point of a lens main surface of the objective lens and an optical axis; a second lens (15) which is arranged closer to a beam source side than the first lens and focuses the plurality of beams on a lens main surface of the first lens; and a third lens (14) which is arranged closer to the beam source side than the second lens and deflects the plurality of beams toward an intersection point of a lens main surface of the second lens and the optical axis.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: November 10, 2020
    Assignee: Hitachi High-Tech Corporation
    Inventors: Akira Ikegami, Yuta Kawamoto, Naomasa Suzuki, Manabu Yano, Yasushi Ebizuka, Naoma Ban
  • Publication number: 20200294757
    Abstract: An object of the present disclosure is to provide a charged particle beam apparatus that can quickly find a correction condition for a new aberration that is generated in association with beam adjustment. In order to achieve the above object, the present disclosure proposes a charged particle beam apparatus configured to include an objective lens (7) configured to focus a beam emitted from a charged particle source and irradiate a specimen, a visual field movement deflector (5 and 6) configured to deflect an arrival position of the beam with respect to the specimen, and an aberration correction unit (3 and 4) disposed between the visual field movement deflector and the charged particle source, in which the aberration correction unit is configured to suppress a change in the arrival position of the beam irradiated under different beam irradiation conditions.
    Type: Application
    Filed: February 5, 2020
    Publication date: September 17, 2020
    Inventors: Yuta KAWAMOTO, Akira IKEGAMI, Yasushi EBIZUKA, Nobuo FUJINAGA
  • Publication number: 20200185186
    Abstract: To provide a charged particle beam device capable of preventing generation of geometric aberration by aligning axes of electrostatic lenses with high accuracy even when center holes of respective electrodes which constitute the electrostatic lens are not disposed coaxially. The charged particle beam device according to the invention includes an electrostatic lens disposed between an acceleration electrode and an objective lens, wherein at least one of the electrodes which constitutes the electrostatic lens is formed of a magnetic body, and two or more magnetic field generating elements are disposed along an outer periphery of the electrode.
    Type: Application
    Filed: October 25, 2019
    Publication date: June 11, 2020
    Inventors: Yuta KAWAMOTO, Akira IKEGAMI, Masahiro FUKUTA
  • Patent number: 10591647
    Abstract: A transparent resin is injection molded to create a marker (10) as an integrally molded article (lenticular lens portion (11)) including convex surfaces (112) and recesses (113) formed on the rear side of the convex surfaces. The recesses (113) are filled with coating films (115) formed by applying and curing a fluid coating material. Each recess (113) is arranged corresponding to a convex surface (112) so that the coating films (115) can be observed as optically distinguishable from the side of the convex surfaces (112).
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: March 17, 2020
    Assignee: ENPLAS CORPORATION
    Inventors: Tomohiro Saito, Yuta Kawamoto, Yuya Oshima, Mitsuaki Shiota
  • Patent number: 10559450
    Abstract: The present invention enlarges a range of movement of field of view by beam deflection with a simple deflector configuration and suppresses deterioration of a signal electron detection rate caused by the beam deflection. A scanning electron microscope according to the present invention is provided with a first deflection field setting module that sets plural deflectors to move a scanning area on a specimen by a primary electron beam to a position deviated from an axis extended from an electron source toward the center of an objective lens and a second deflection field setting module that sets the plural deflectors so that trajectories of signal electrons are corrected without changing the scanning area set by the first deflection field setting module. The control unit controls the plural deflectors by adding a setting value set by the second deflection field setting module to a setting value set by the first deflection field setting module.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: February 11, 2020
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Noritsugu Takahashi, Yasunari Sohda, Akira Ikegami, Yuta Kawamoto
  • Patent number: 10557971
    Abstract: A transparent resin is injection molded to create a marker (10) as an integrally molded article (lenticular lens portion (11)) including convex surfaces (112) and recesses (113) formed on the rear side of the convex surfaces. The recesses (113) are filled with coating films (115) formed by applying and curing a fluid coating material. Each recess (113) is arranged corresponding to a convex surface (112) so that the coating films (115) can be observed as optically distinguishable from the side of the convex surfaces (112).
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: February 11, 2020
    Assignee: ENPLAS CORPORATION
    Inventors: Tomohiro Saito, Yuta Kawamoto, Yuya Oshima, Mitsuaki Shiota
  • Publication number: 20190393014
    Abstract: The objective of the present invention is to provide a charged-particle beam device capable of moving a field-of-view to an exact position even when moving the field-of-view above an actual sample. In order to attain this objective, a charged-particle beam device is proposed comprising an objective lens whereby a charged-particle beam is focused and irradiated onto a sample: a field-of-view moving deflector for deflecting the charged-particle beam; and a stage onto which the sample is placed.
    Type: Application
    Filed: January 12, 2017
    Publication date: December 26, 2019
    Inventors: Yuta KAWAMOTO, Akira IKEGAMI, Yasushi EBIZUKA, Naoma BAN
  • Patent number: 10508904
    Abstract: This marker comprises a plurality of convex-surface section disposed along the X-axis direction and a plurality of detection sections disposed so as to face the convex-surface sections. Each of the detection sections is located, in the protruding direction of the convex-surface sections, closer to the convex-surface section side than a focal point on an image surface of the convex-surface section of the first optical unit in the X direction and is located on a single plane located further on the opposite side from the protruding direction than the edge of the image surface. The image surface extends from the first optical unit to the nth optical unit in the X direction, where n is at least 2.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: December 17, 2019
    Assignee: Enplas Corporation
    Inventors: Yasuyuki Fukuda, Yuta Kawamoto, Tomohiro Saito
  • Publication number: 20190369301
    Abstract: The present invention provides a marker capable of reducing noises other than a detection target image. The marker (100) of the present invention includes a lens main body (101) that includes multiple lens units (102) and a substrate (106). The lens units (102) are arranged successively in a planar direction. The lens main body (101) has lens portions (103) on one surface side and has multiple detectable portions (105) that can be detected from the one surface side on the other surface side. The lens main body (101) is arranged on the substrate (106). The marker (100) further includes a non-scattering layer (108) between a surface of the substrate (106) on the lens main body (101) side and a surface of the lens main body (101) on the substrate (106) side.
    Type: Application
    Filed: December 14, 2017
    Publication date: December 5, 2019
    Inventors: Ryo SASAKI, Yuta KAWAMOTO, Tomohiro SAITO
  • Patent number: 10446838
    Abstract: Cycle characteristics of a nonaqueous secondary battery are to be improved. An active material including: a first active material that contains a nano silicon produced by heating a layered polysilane represented by a composition formula (SiH)n and having a structure in which multiple six-membered rings formed from silicon atoms are connected; and a second active material that contains a graphite, is used in a negative electrode. With this, expansion and contraction due to stress during charging and discharging can be mitigated, and thereby cycle characteristics improve.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: October 15, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takeshi Kondo, Yusuke Sugiyama, Takashi Mohri, Hiroki Oshima, Tomohiro Niimi, Mutsumi Takahashi, Nobuhiro Goda, Takahiro Sugioka, Yuta Kawamoto
  • Publication number: 20190287754
    Abstract: The present disclosure aims at proposing a multi-beam irradiation device capable of correcting off-axis aberrations. In order to achieve the above object, a beam irradiation device is proposed, which includes a beam source which emits a plurality of beams; an objective lens (17) which focuses a beam on a sample; a first lens (16) which is arranged such that a lens main surface is positioned at an object point of the objective lens and deflects a plurality of incident beams toward an intersection point of a lens main surface of the objective lens and an optical axis; a second lens (15) which is arranged closer to a beam source side than the first lens and focuses the plurality of beams on a lens main surface of the first lens; and a third lens (14) which is arranged closer to the beam source side than the second lens and deflects the plurality of beams toward an intersection point of a lens main surface of the second lens and the optical axis.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 19, 2019
    Inventors: Akira IKEGAMI, Yuta KAWAMOTO, Naomasa SUZUKI, Manabu YANO, Yasushi EBIZUKA, Naoma BAN
  • Publication number: 20190178636
    Abstract: This marker comprises a plurality of convex-surface section disposed along the X-axis direction and a plurality of detection sections disposed so as to face the convex-surface sections. Each of the detection sections is located, in the protruding direction of the convex-surface sections, closer to the convex-surface section side than a focal point on an image surface of the convex-surface section of the first optical unit in the X direction and is located on a single plane located further on the opposite side from the protruding direction than the edge of the image surface. The image surface extends from the first optical unit to the nth optical unit in the X direction, where n is at least 2.
    Type: Application
    Filed: July 13, 2017
    Publication date: June 13, 2019
    Inventors: Yasuyuki FUKUDA, Yuta KAWAMOTO, Tomohiro SAITO
  • Patent number: 10304654
    Abstract: A purpose of the present invention is to provide a charged particle beam device that suppresses an off-axis amount when a field of view moves, said move causing an aberration, and allows large field of view moves to be carried out. In order to achieve the above-mentioned purpose, this charged particle beam device is provided with an objective lens and deflectors for field of view moves, said deflectors deflecting a charged particle beam, and is further provided with an accelerating tube positioned between the objective lens and the deflectors for field of view moves, a power source that applies a voltage to the accelerating tube, and a control device that controls the voltage to be applied to the power source in response to the deflection conditions of the deflectors for field of view moves.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: May 28, 2019
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Akira Ikegami, Yuta Kawamoto, Hideto Dohi, Manabu Yano, Yutaka Tandai, Hideyuki Kazumi
  • Patent number: D849940
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: May 28, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Toshiharu Kuwae, Yuta Kawamoto, Takeshi Yukiiri