Patents by Inventor Masahiro Mizuta

Masahiro Mizuta 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: 11980417
    Abstract: In an ophthalmology system, an right-eye imaged image is displayed on a display section for presentation to an observer through an optical unit and a reflection member. A left-eye imaged image is also displayed on a display section for presentation to an observer through an optical unit and a reflection member. A separation between the left and right imaged images is made wider than a spacing between the left and right optical units. This enables image presentation with the optical axes for the observer viewing the images intersecting in front so as to cause a convergence angle to arise.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: May 14, 2024
    Assignee: NIKON CORPORATION
    Inventors: Tomohiro Kawasaki, Ryoichi Sataka, Masahiro Mizuta
  • Patent number: 11786118
    Abstract: In an ophthalmic imaging system an image imaged by an imaging section for a right eye is formed as an imaging image on a display, and then displayed through a right-eye optical unit and a reflection member. An image imaged by an imaging section for a left eye is formed as an imaging image on a display, and then displayed through an optical unit and the reflection member. This thereby enables the object to be visually inspected as a three-dimensional image by the observer viewing the right-eye imaging image and the left-eye imaging image, which differ from each other according to the parallax therebetween, by viewing the respective images through right and left eyes.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: October 17, 2023
    Assignee: NIKON CORPORATION
    Inventors: Tomohiro Kawasaki, Masahiro Mizuta, Ryoichi Sataka, Toshiyuki Namikawa
  • Publication number: 20230060781
    Abstract: Provided is a method of assisting the detection of nonalcoholic steatohepatitis (NASH), which is far less invasive than liver biopsy and is based on simple operations that do not require skilled technical personnel. The present invention is a method of assisting the detection of NASH, which includes: a) measuring the amount of LDL-TG contained in a test blood sample isolated from a living body; b) measuring the amount of at least one component selected from the group consisting of LDL-C, LDL subfraction-C, IIDL-C, HDL subfraction-C, ApoB, ApoE, total cholesterol, ALT, and AST contained in the test blood sample; and c) determining the possibility of developing and/or having NASH by using the amount of LDL-TG in combination with the amount of the at least one component.
    Type: Application
    Filed: February 4, 2021
    Publication date: March 2, 2023
    Applicants: Denka Company Limited, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Noriyuki SATOH, Yasuki ITO, Toshihiro SAKURAI, Masahiro MIZUTA, Shu-Ping HUI, Kazuhiro NOUSO, Hiroyuki OKADA
  • Patent number: 11426603
    Abstract: A treatment planning apparatus 501 or a clinical decision support apparatus 701 calculates a dose distribution, calculates the damage to a normal tissue for a plurality of number of times of radiation irradiation based on the calculated dose distribution, and displays at least one or more calculated damages to the normal tissues on display apparatuses 603 and 703 or outputs the same to an outside of the apparatuses 501 and 701. Accordingly, since effects can be calculated for a plurality of number of times of irradiation, the optimum number of time of irradiation can be presented, and an operator and a doctor can be presented with a suitable decision material of a radiation irradiation planning.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: August 30, 2022
    Assignees: HITACHI, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Keiji Kobashi, Masahiro Mizuta, Hiroyuki Date, Hiroki Shirato, Shinichi Shimizu, Kikuo Umegaki, Shusuke Hirayama, Yusuke Fujii, Toru Umekawa, Rintarou Fujimoto
  • Publication number: 20220218199
    Abstract: An ophthalmic device for observing a subject eye, including: a light source; a scanning section that scans light from the light source; and an objective optical system configured to form a pupil, which has a conjugate relationship with a pupil of the subject eye, at the scanning section, wherein the objective optical system has, in order from the scanning section toward the subject eye, a first lens group that is positive, a second lens group that is positive, and a third lens group that is disposed between the first lens group and the second lens group, and that includes a concave surface configured to diverge light.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 14, 2022
    Applicant: NIKON CORPORATION
    Inventors: Masahiro MIZUTA, Yasufumi NISHI
  • Patent number: 11251499
    Abstract: A battery cover includes: a case for housing a battery; and a rib formed on an inner peripheral face of the case to form a first space between the inner peripheral face of the case and an outer peripheral face of the battery. The case has an air hole that communicates the inside and outside of the case, a first housing part for housing a positive electrode of the battery, and a second housing part for housing a negative electrode of the battery. The air hole is disposed in a position in the case closer to the second housing part than to the first housing part.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: February 15, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kunihiko Itou, Yukiharu Wakiguchi, Eiji Saitou, Kazuhiko Miura, Masahiro Mizuta
  • Publication number: 20210294117
    Abstract: An optical unit includes an optical system that includes a focal point on an incident side of light at a position for setting a display image of an object and that is configured to emit light from a focal plane as parallel light. The optical unit also includes a housing section housing the optical system and is configured so as to satisfy a condition equation expressed by IB?7570 mm3 wherein IB is a viewable area where the display image is viewable.
    Type: Application
    Filed: June 4, 2021
    Publication date: September 23, 2021
    Applicant: NIKON CORPORATION
    Inventors: Masahiro MIZUTA, Ryoichi SATAKA, Tomohiro KAWASAKI
  • Publication number: 20210093194
    Abstract: The ophthalmic optical system is configured to apply an angular scanning light ray to an eye. M=|?out/?in| is defined, where ?in represents an angle between an incident light ray to the ophthalmic optical system and an optical axis of the ophthalmic optical system, and ?out represents an angle between an exiting light ray exiting from the ophthalmic optical system toward the eye and the optical axis. The ophthalmic optical system satisfies a conditional expression Mpar<Mmax, where Mpar represents M in a case that the incident light ray is a paraxial ray, Mmax represents M in a case that the incident light ray is a ray of a maximum angle of win.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Applicants: NIKON CORPORATION, OPTOS PLC
    Inventors: Gonzalo MUYO, Alistair GORMAN, David M. WILLIAMSON, Makoto FUJIMOTO, Yasufumi NISHI, Azuna NONAKA, Katsuya WATANABE, Miwako YOSHIDA, Kyoya TOKUNAGA, Masahiro MIZUTA
  • Publication number: 20210059515
    Abstract: In an ophthalmology system, an right-eye imaged image is displayed on a display section for presentation to an observer through an optical unit and a reflection member. A left-eye imaged image is also displayed on a display section for presentation to an observer through an optical unit and a reflection member. A separation between the left and right imaged images is made wider than a spacing between the left and right optical units. This enables image presentation with the optical axes for the observer viewing the images intersecting in front so as to cause a convergence angle to arise.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Applicant: NIKON CORPORATION
    Inventors: Tomohiro KAWASAKI, Ryoichi SATAKA, Masahiro MIZUTA
  • Patent number: 10895720
    Abstract: A variable power optical system 3 used in a parallel stereoscopic microscope apparatus 100 and the like includes a plurality of optical paths in which optical axes are arranged substantially parallel, includes a plurality of lens groups that change the magnification of a diameter of a luminous flux entering substantially parallel to each of the optical paths to eject the luminous flux as substantially parallel luminous fluxes, and at least two lens groups move along the optical axis in each optical path according to the change in the magnification. At least two lens groups of at least one optical path among the plurality of optical paths move in a direction including a component perpendicular to the optical axis according to the change in the magnification at at least part of a section where the magnification is changed from a high-power end state to a low-power end.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: January 19, 2021
    Assignee: NIKON CORPORATION
    Inventor: Masahiro Mizuta
  • Publication number: 20200387007
    Abstract: An optical system is capable observing a peripheral field away from a visual axis and includes a reflection mirror unit forming an image of an examined eye with two concave mirrors in an opposing arrangement facing each other at the examined eye side, this being the upstream side, of a first optical unit and a second optical unit. In the reflection unit there is a conjugate relationship between one focal point thereof and another focal point thereof. By forming an image of the examined eye using the reflection unit a distance can be secured between the examined eye and the optical system and a wide range of the examined eye can be observed.
    Type: Application
    Filed: August 21, 2020
    Publication date: December 10, 2020
    Applicant: NIKON CORPORATION
    Inventor: Masahiro MIZUTA
  • Patent number: 10831003
    Abstract: A variable power optical system 3 used in a parallel stereoscopic microscope apparatus 100 and the like includes a plurality of optical paths in which optical axes are arranged substantially parallel, includes a plurality of lens groups that change the magnification of a diameter of a luminous flux entering substantially parallel to each of the optical paths to eject the luminous flux as substantially parallel luminous fluxes, and at least two lens groups move along the optical axis in each optical path according to the change in the magnification. At least two lens groups of at least one optical path among the plurality of optical paths move in a direction including a component perpendicular to the optical axis according to the change in the magnification at at least part of a section where the magnification is changed from a high-power end state to a low-power end.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: November 10, 2020
    Assignee: NIKON CORPORATION
    Inventor: Masahiro Mizuta
  • Publication number: 20200214562
    Abstract: In an ophthalmic imaging system an image imaged by an imaging section for a right eye is formed as an imaging image on a display, and then displayed through a right-eye optical unit and a reflection member. An image imaged by an imaging section for a left eye is formed as an imaging image on a display, and then displayed through an optical unit and the reflection member. This thereby enables the object to be visually inspected as a three-dimensional image by the observer viewing the right-eye imaging image and the left-eye imaging image, which differ from each other according to the parallax therebetween, by viewing the respective images through right and left eyes.
    Type: Application
    Filed: March 19, 2020
    Publication date: July 9, 2020
    Applicant: NIKON CORPORATION
    Inventors: Tomohiro KAWASAKI, Masahiro MIZUTA, Ryoichi SATAKA, Toshiyuki NAMIKAWA
  • Publication number: 20200069968
    Abstract: A treatment planning apparatus 501 or a clinical decision support apparatus 701 calculates a dose distribution, calculates the damage to a normal tissue for a plurality of number of times of radiation irradiation based on the calculated dose distribution, and displays at least one or more calculated damages to the normal tissues on display apparatuses 603 and 703 or outputs the same to an outside of the apparatuses 501 and 701. Accordingly, since effects can be calculated for a plurality of number of times of irradiation, the optimum number of time of irradiation can be presented, and an operator and a doctor can be presented with a suitable decision material of a radiation irradiation planning.
    Type: Application
    Filed: December 19, 2016
    Publication date: March 5, 2020
    Inventors: Keiji KOBASHI, Masahiro MIZUTA, Hiroyuki DATE, Hiroki SHIRATO, Shinichi SHIMIZU, Kikuo UMEGAKI, Shusuke HIRAYAMA, Yusuke FUJII, Toru UMEKAWA, Rintarou FUJIMOTO
  • Publication number: 20200026046
    Abstract: A variable power optical system 3 used in a parallel stereoscopic microscope apparatus 100 and the like includes a plurality of optical paths in which optical axes are arranged substantially parallel, includes a plurality of lens groups that change the magnification of a diameter of a luminous flux entering substantially parallel to each of the optical paths to eject the luminous flux as substantially parallel luminous fluxes, and at least two lens groups move along the optical axis in each optical path according to the change in the magnification. At least two lens groups of at least one optical path among the plurality of optical paths move in a direction including a component perpendicular to the optical axis according to the change in the magnification at at least part of a section where the magnification is changed from a high-power end state to a low-power end.
    Type: Application
    Filed: September 3, 2019
    Publication date: January 23, 2020
    Applicant: NIKON CORPORATION
    Inventor: Masahiro MIZUTA
  • Publication number: 20190391373
    Abstract: A variable power optical system 3 used in a parallel stereoscopic microscope apparatus 100 and the like includes a plurality of optical paths in which optical axes are arranged substantially parallel, includes a plurality of lens groups that change the magnification of a diameter of a luminous flux entering substantially parallel to each of the optical paths to eject the luminous flux as substantially parallel luminous fluxes, and at least two lens groups move along the optical axis in each optical path according to the change in the magnification. At least two lens groups of at least one optical path among the plurality of optical paths move in a direction including a component perpendicular to the optical axis according to the change in the magnification at at least part of a section where the magnification is changed from a high-power end state to a low-power end.
    Type: Application
    Filed: September 3, 2019
    Publication date: December 26, 2019
    Applicant: NIKON CORPORATION
    Inventor: Masahiro MIZUTA
  • Publication number: 20190267592
    Abstract: A battery cover includes: a case for housing a battery; and a rib formed on an inner peripheral face of the case to form a first space between the inner peripheral face of the case and an outer peripheral face of the battery. The case has an air hole that communicates the inside and outside of the case, a first housing part for housing a positive electrode of the battery, and a second housing part for housing a negative electrode of the battery. The air hole is disposed in a position in the case closer to the second housing part than to the first housing part.
    Type: Application
    Filed: July 5, 2017
    Publication date: August 29, 2019
    Inventors: KUNIHIKO ITOU, YUKIHARU WAKIGUCHI, EIJI SAITOU, KAZUHIKO MIURA, MASAHIRO MIZUTA
  • Patent number: 9551862
    Abstract: There is provided a scanning microscope so configured that when the position of the exit pupil of an imaging optical system and a position conjugate to the exit pupil change, the position of the rotation center of a scanned light flux is moved and follows the changed exit pupil position. A scanning microscope includes a light source, an objective lens, and a scan unit. The scan unit includes first to fourth deflectors, and the deflection angle of illumination light deflected off each of the first to fourth deflectors is so controlled that the pivotal point of the illumination light deflected off each of the first and second deflectors and the pivotal point of the illumination light deflected off each of the third and fourth deflectors substantially coincide with the exit pupil of the objective lens or a position conjugate to the exit pupil.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: January 24, 2017
    Assignee: NIKON CORPORATION
    Inventor: Masahiro Mizuta
  • Patent number: 8922886
    Abstract: A microscope apparatus including an illumination apparatus capable of, regardless of the observation magnification of an imaging optical system, filling the entrance pupil of the imaging optical system with illumination light, and suitably restricting the conjugate image of the entrance pupil of the imaging optical system by a light shielding element. A microscope apparatus is configured by including: an illumination apparatus which includes a surface light emitter (light guide plate) having a light emitting surface as a planar light-emitting region and irradiates a sample with light emitted from the light guide plate; an objective lens which condenses light from the sample; and an imaging optical system which includes a variable power lens group configured to form an image of the sample by changing the magnification of the image of the sample. The illumination apparatus includes a light shielding plate and a light diffusing element.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: December 30, 2014
    Assignee: Nikon Corporation
    Inventor: Masahiro Mizuta
  • Publication number: 20140092459
    Abstract: There is provided a scanning microscope so configured that when the position of the exit pupil of an imaging optical system and a position conjugate to the exit pupil change, the position of the rotation center of a scanned light flux is moved and follows the changed exit pupil position. A scanning microscope includes a light source, an objective lens, and a scan unit. The scan unit includes first to fourth deflectors, and the deflection angle of illumination light deflected off each of the first to fourth deflectors is so controlled that the pivotal point of the illumination light deflected off each of the first and second deflectors and the pivotal point of the illumination light deflected off each of the third and fourth deflectors substantially coincide with the exit pupil of the objective lens or a position conjugate to the exit pupil.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: NIKON CORPORATION
    Inventor: Masahiro MIZUTA