Patents by Inventor Mitsuru Namiki

Mitsuru Namiki 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).

  • Publication number: 20210161364
    Abstract: An endoscope apparatus includes: a light source that radiates a pulsed light beam onto an imaging subject; an imaging optical system; an image transmission optical system that transmits the image of the imaging subject; an optical sensor that has a light receiving surface on which a plurality of pixels are arrayed and that detects a light level of the image; and one or more processors, wherein the optical sensor obtains light levels by detecting, in a time division manner, a reflected light beam of the pulsed light beam at each of the pixels, and wherein the processors are configured to: calculate an observation distance to the imaging subject from the imaging optical system on a basis of the light levels.
    Type: Application
    Filed: January 21, 2021
    Publication date: June 3, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Ikutoshi FUKUSHIMA, Junichi NISHIMURA, Atsuyoshi SHIMAMOTO, Mitsuru NAMIKI
  • Publication number: 20210145253
    Abstract: Provided is an objective optical system including: a first spherical lens and a second spherical lens that are arrayed in this order from an object; and at least one of a first optical medium and a second optical medium, wherein the first optical medium is a solid or liquid disposed at an object side of the first spherical lens and is in close contact with a surface on the object side of the first spherical lens, over an entire optical path; and the second optical medium is a solid or liquid disposed at an opposite side of the second spherical lens from the object and is in close contact with a surface on the opposite side of the second spherical lens from the object, over the entire optical path.
    Type: Application
    Filed: December 30, 2020
    Publication date: May 20, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Takehiro MIKI, Keiichiro NAKAJIMA, Mitsuru NAMIKI
  • Patent number: 10568495
    Abstract: Provided is a scanning endoscope system including: an illumination-light emitting portion that is inserted into a body of a patient and that emits illumination light emitted from a light-source portion toward an imaging subject in the body in a spot-like manner; a light scanner that scans the illumination light on the imaging subject; and a light detector that is disposed at a body surface of the patient, and that detects reflected light coming from the scanning position in the imaging subject, at which the illumination light is scanned by the light scanner.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: February 25, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Masashi Yamada, Atsuyoshi Shimamoto, Mitsuru Namiki, Keiichiro Nakajima, Takamitsu Sakamoto, Mikihiko Terashima, Yoko Okabe, Yu Kondo
  • Patent number: 10488647
    Abstract: An apparatus for measuring a scanning pattern of an optical scanning apparatus can easily reduce the effect of stray light and improve the measurement accuracy of the scanning pattern. An apparatus for measuring a scanning pattern of an optical scanning apparatus (100), which scans an object being illuminated with illumination light and generates a display image of the object being illuminated, includes a screen (11) scanned by the illumination light and an optical position detector (12) that detects the position of an irradiation spot of the illumination light on the screen (11). The apparatus for measuring a scanning pattern sequentially detects a position of the irradiation spot at predetermined time points with the optical position detector (12) during scanning of the screen (11) to measure the scanning pattern of the illumination light.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: November 26, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Mitsuru Namiki
  • Publication number: 20190335986
    Abstract: An optical-scanning-type observation probe is provided with: an imaging optical system that illumination light scanned by an optical scanner enters and that focuses the illumination light in the form of a spot, multiple times; a projection optical system that emits illumination light coming from a focus position focused by the imaging optical system, toward a subject in the form of a spot; and a light-receiver that is provided independently of the imaging optical system and the projection optical system and that receives reflected light of the illumination light, the reflected light coming from the subject, via a light path different from that of the imaging optical system and the projection optical system.
    Type: Application
    Filed: July 19, 2019
    Publication date: November 7, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Atsuyoshi SHIMAMOTO, Keiichiro NAKAJIMA, Masashi YAMADA, Takamitsu SAKAMOTO, Mitsuru NAMIKI, Mikihiko TERASHIMA
  • Publication number: 20180140174
    Abstract: Unnecessary emission of strong laser light is automatically prevented. Provided is a blood-vessel recognition system including: a laser-light source; a blood-vessel recognition probe that has a probe body that is inserted into a body and a laser-light emitting unit that is provided on the probe body and that emits laser light supplied from the laser-light source; an in-use-state determining unit that determines whether the blood-vessel recognition probe is in an in-use state in which the laser light emitted from the laser-light emitting unit is radiated onto living tissue in the body; and a control unit that controls the laser-light source on the basis of a determination result obtained by the in-use-state determining unit, such that the intensity of the laser light is reduced when the blood-vessel recognition probe is not in the in-use state, compared with when the blood-vessel recognition probe is in the in-use state.
    Type: Application
    Filed: January 3, 2018
    Publication date: May 24, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Takeshi WATANABE, Mitsuru NAMIKI, Kenichi KIMURA
  • Publication number: 20180116492
    Abstract: Provided is a scanning endoscope system including: an illumination-light emitting portion that is inserted into a body of a patient and that emits illumination light emitted from a light-source portion toward an imaging subject in the body in a spot-like manner; a light scanner that scans the illumination light on the imaging subject; and a light detector that is disposed at a body surface of the patient, and that detects reflected light coming from the scanning position in the imaging subject, at which the illumination light is scanned by the light scanner.
    Type: Application
    Filed: December 19, 2017
    Publication date: May 3, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Masashi YAMADA, Atsuyoshi SHIMAMOTO, Mitsuru NAMIKI, Keiichiro NAKAJIMA, Takamitsu SAKAMOTO, Mikihiko TERASHIMA, Yoko OKABE, Yu KONDO
  • Publication number: 20180110402
    Abstract: Provided is a scanning endoscope system including an illumination-light emitting unit that outputs illumination light emitted from a light source in a spot-like manner toward a subject, a light scanner that scans the illumination light output from the illumination-light emitting unit over the subject, and a light detector that is provided in a movable manner relative to the illumination-light emitting unit and that detects reflection light from a scan position on the subject over which the illumination light is scanned by the light scanner.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 26, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Masashi YAMADA, Atsuyoshi SHIMAMOTO, Mitsuru NAMIKI, Keiichiro NAKAJIMA, Takamitsu SAKAMOTO, Mikihiko TERASHIMA, Yoko OKABE
  • Publication number: 20180103835
    Abstract: A scanning-endoscope image evaluation system includes: a scanning endoscope provided with a light detector and a fiber scanner that includes an optical fiber for guiding illumination light coming from a light source and emitting it from its distal end and an actuator that scans the emitted illumination light by vibrating the distal end of the optical fiber; and a chart for evaluating a characteristic of an image acquired by the scanning endoscope, wherein the distal end of the optical fiber and the light detector are disposed so as to face each other with the chart sandwiched therebetween, and forward scattered light that has been emitted from the optical fiber and that has passed through the chart is detected by the light detector.
    Type: Application
    Filed: December 18, 2017
    Publication date: April 19, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Masashi YAMADA, Atsuyoshi SHIMAMOTO, Mitsuru NAMIKI
  • Publication number: 20180055372
    Abstract: An image processing apparatus including: an image acquisition device for observing a living body; a blood vessel recognition device that irradiates the living body with an exploration laser beam and that recognizes a blood vessel; an arithmetic operation unit that calculates a first laser spot position on a first frame acquired by the image acquisition device when the blood vessel is recognized and that adds a mark corresponding to the first laser spot to a position on a second frame corresponding to the first frame, the second frame being acquired at a time different from the time of the first frame; and a display unit for displaying, on an image acquired by the image acquisition device, a plurality of the marks added by the arithmetic operation unit as a result of the blood vessel being recognized at a plurality of different times.
    Type: Application
    Filed: October 20, 2017
    Publication date: March 1, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Takeshi WATANABE, Makoto IGARASHI, Mitsuru NAMIKI, Hiroyoshi YAJIMA, Yuji HIRAI, Satoshi HONDA, Kazuhiro TANAKA, Yusuke TAKEI
  • Publication number: 20180003945
    Abstract: An apparatus for measuring a scanning pattern of an optical scanning apparatus can easily reduce the effect of stray light and improve the measurement accuracy of the scanning pattern. An apparatus for measuring a scanning pattern of an optical scanning apparatus (100), which scans an object being illuminated with illumination light and generates a display image of the object being illuminated, includes a screen (11) scanned by the illumination light and an optical position detector (12) that detects the position of an irradiation spot of the illumination light on the screen (11). The apparatus for measuring a scanning pattern sequentially detects a position of the irradiation spot at predetermined time points with the optical position detector (12) during scanning of the screen (11) to measure the scanning pattern of the illumination light.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Applicant: OLYMPUS CORPORATION
    Inventor: Mitsuru NAMIKI
  • Patent number: 9775501
    Abstract: An endoscope has an insertion portion inserted through a living body, an illumination fiber arranged at a distal end of the insertion portion and irradiates the living body with illumination light, a detection fiber which detects return light from the living body, an actuator which swings a free end of the illumination fiber, and a ferrule which has a through-hole based on a diameter of the illumination fiber and is arranged between the illumination fiber and the actuator. The actuator has an actuator arranged at a first side face of the ferrule and an actuator arranged at a second side face of the ferrule that is different from a face point-symmetric to the first side face with respect to an axial direction of the illumination fiber.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: October 3, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Masahiro Yoshino, Tomoki Funakubo, Atsuyoshi Shimamoto, Yasunobu Iga, Mitsuru Namiki
  • Publication number: 20170188800
    Abstract: A medical sheath is a medical sheath to be used in combination with a medical device including an insertion portion that can be inserted into a body cavity of a subject via a trocar, the medical sheath including: a sheath body formed in a shape that can be inserted to and removed from a through hole through in the trocar; a channel provided in the sheath body, the channel having a shape that enables insertion and removal of the insertion portion; a first optical transmission section provided in the sheath body, the first optical transmission section being provided for guiding illuminating light; and a second optical transmission section that is provided in the sheath body and is separate from the first optical transmission section, the second optical transmission section being provided for guiding return light generated upon application of the illuminating light from the first optical transmission section.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 6, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Yuchun FU, Makoto IGARASHI, Hiroyoshi YAJIMA, Mitsuru NAMIKI, Takeshi WATANABE
  • Publication number: 20170035275
    Abstract: A connection adapter includes: an adapter housing; a split sleeve; and a spacer having a space determiner disposed inside the split sleeve and an angle determiner that passes through the slit of the split sleeve to be secured relative to the adapter housing. The two connector connection pars are each connected to the connectors, respectively, causing the ferrules of the connectors to be fitted into the split sleeve and secured across the spacer, so that the single mode optical fibers of the connectors are optically connected to each other via no point of contact therebetween, to thereby provide a connection adapter capable of creating stable connection efficiency for optical fibers and an endoscope device using the connection adapter.
    Type: Application
    Filed: October 19, 2016
    Publication date: February 9, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Hiroyoshi YAJIMA, Mitsuru NAMIKI
  • Publication number: 20160246062
    Abstract: While one beam is being branched into a plurality of beams with different optical path lengths, the beams can be converged on the same position in the optical-axis direction with a simple structure even when relative angles between the beams differ. Provided is a beam splitter apparatus including at least one beam splitter that branches the input pulsed beam into two; at least two light-guide members with different optical path lengths that propagate the pulsed beams branching off via the beam splitter; and a reflection optical system that endows a plurality of pulsed beams emitted from exit ends of the plurality of light-guide members with a relative angle and that converges the plurality of pulsed beams on the same position.
    Type: Application
    Filed: April 22, 2016
    Publication date: August 25, 2016
    Applicant: OLYMPUS CORPORATION
    Inventors: Mitsuru NAMIKI, Yohei TANIKAWA, Yasunobu IGA, Shintaro TAKAHASHI
  • Publication number: 20160025966
    Abstract: An optical scanning apparatus, including: an optical fiber (11); a holding unit (29) for holding an emission end (11a) of the optical fiber (11) in an oscillatable manner; and a driving unit (28a to 28d) for driving the emission end (11a), in which the holding unit (29) has a holding structure that is different between the vibration direction caused by the driving unit (28a to 28d)/a direction orthogonal to the vibration direction, and other directions.
    Type: Application
    Filed: July 29, 2015
    Publication date: January 28, 2016
    Applicant: OLYMPUS CORPORATION
    Inventors: Atsuyoshi SHIMAMOTO, Mitsuru NAMIKI
  • Publication number: 20140194692
    Abstract: An endoscope has an insertion portion inserted through a living body, an illumination fiber arranged at a distal end of the insertion portion and irradiates the living body with illumination light, a detection fiber which detects return light from the living body, an actuator which swings a free end of the illumination fiber, and a ferrule which has a through-hole based on a diameter of the illumination fiber and is arranged between the illumination fiber and the actuator. The actuator has an actuator arranged at a first side face of the ferrule and an actuator arranged at a second side face of the ferrule that is different from a face point-symmetric to the first side face with respect to an axial direction of the illumination fiber.
    Type: Application
    Filed: March 11, 2014
    Publication date: July 10, 2014
    Applicants: OLYMPUS MEDICAL SYSTEMS CORP., OLYMPUS CORPORATION
    Inventors: Masahiro YOSHINO, Tomoki FUNAKUBO, Atsuyoshi SHIMAMOTO, Yasunobu IGA, Mitsuru NAMIKI
  • Publication number: 20130075629
    Abstract: A terahertz wave generator includes a femtosecond pulse light source 1 that outputs a near-infrared light L1, which is a pulse light, a diffraction grating 2 that diffracts the outputted near-infrared light L1, an optical system including a lens 3 and a lens 5, and a LiNbO3 crystal 6 for generating terahertz waves L2 with irradiation of the near-infrared light L1. The optical system including the lens 3 and the lens 5 is arranged such that at least a pan of a plane S0? optically conjugated to a diffractive plane S0 of the diffraction grating 2 is formed within the LiNbO3 crystal 6, and a direction normal to the conjugated plane and a direction normal to a plane formed by the pulse front of the non-linear L1 are matched with each other within the LiNbO3 crystal 6. This makes it possible for the near-infrared light L1 to cause the nonlinear optical effect to efficiently occur in the wide range, whereby high-efficient and high-power terahertz waves can be obtained.
    Type: Application
    Filed: March 8, 2011
    Publication date: March 28, 2013
    Applicant: OLYMPUS CORPORATION
    Inventors: Atsushi Doi, Mitsuru Namiki
  • Publication number: 20120271111
    Abstract: While one beam is being branched into a plurality of beams with different optical path lengths, the beams can be converged on the same position in the optical-axis direction with a simple structure even when relative angles between the beams differ. Provided is a beam splitter apparatus including a beam splitter that branches an input pulsed beam into two optical paths with different optical path lengths; relay optical systems that are disposed in the respective branching optical paths and that relay pupils in the optical paths; a beam splitter that multiplexes the relayed pulsed beams in the two optical paths; and a reflection optical system that endows pulsed beams branching off via the beam splitter with a relative angle.
    Type: Application
    Filed: May 1, 2012
    Publication date: October 25, 2012
    Applicant: OLYMPUS CORPORATION
    Inventors: Mitsuru NAMIKI, Yohei TANIKAWA, Yasunobu IGA, Shintaro TAKAHASHI
  • Patent number: 8198592
    Abstract: A measuring instrument has a light source for irradiating light including rays of light having the wavelength of excitation light, an objective lens for focusing light irradiated from the light source to a predetermined focusing position, a first mirror for directly reflecting light from the objective lens, a second mirror for reflecting light reflected by the first mirror, the second mirror having an aperture P, and a measuring device for measuring light generated from a sample and having a wavelength different from the wavelength of excitation light, and the sample being arranged between the first mirror and the second mirror, the focusing position of the objective lens being made to agree with the position of the aperture P, and the measuring device being adapted to measure light of a wavelength different from the wavelength of excitation light generated from the sample and passing through the aperture P.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: June 12, 2012
    Assignee: Olympus Corporation
    Inventors: Yoshimasa Suzuki, Mitsuru Namiki