Patents by Inventor Tatsuo Nakata

Tatsuo Nakata 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: 7196843
    Abstract: A confocal microscope apparatus comprises a first optical scanning system which obtains a scan image of a sample using a laser beam from a first laser light source, a second optical scanning system which scans specific regions of a sample with a laser beam from a second laser light source that is different from the first laser light source, thereby causing a particular phenomenon, and a beam diameter varying mechanism which can change the beam diameter of the laser beam of at least one of the first optical scanning system and the second optical scanning system. With this configuration, the apparatus further comprises an excitation light intensity distribution calculator which calculates and stores the excitation light intensity distribution along a depth direction on the sample surface from the beam diameter of the laser beam output from the beam diameter varying mechanism.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: March 27, 2007
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Tatsuo Nakata
  • Patent number: 7176428
    Abstract: The invention provides a multiphoton-excitation-type examination apparatus that efficiently generates a multiphoton-excitation effect, that makes the measurement head compact, and that can be easily adjusted when the measurement head is replaced. The multiphoton-excitation-type examination apparatus comprises a laser light source that oscillates ultrashort pulsed laser light; an optical fiber that transmits the ultrashort pulsed laser light from the laser light source; a support member; a measurement head supported on the support member so as to be movable upwards and downwards and at an angle, and having an optical system that irradiates a specimen with the ultrashort pulsed laser light transmitted by the optical fiber that measures fluorescence or reflected light coming from the specimen; and a dispersion-compensating member, in the measurement head, that compensates for group velocity dispersion of the ultrashort pulsed laser light irradiated onto the specimen.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: February 13, 2007
    Assignee: Olympus Corporation
    Inventors: Yoshihiro Kawano, Tadashi Hirata, Tatsuo Nakata, Hiroshi Sasaki
  • Patent number: 7158294
    Abstract: An image recording method for use in a confocal laser scanning microscope apparatus is configured to scan a specimen with each of a plurality of laser lights at least having different wavelengths as spotlight, to detect the light from the specimen based on the spotlight, and to partition and record obtained image information.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: January 2, 2007
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinji Motomura, Tatsuo Nakata
  • Publication number: 20060278530
    Abstract: A scanning laser microscope that can quantitatively display a laser irradiation power on a display unit and that can suppress fluctuations in the laser irradiation power is provided.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 14, 2006
    Applicant: Olympus Corporation
    Inventors: Kunihiko Sasaki, Yasunari Matsukawa, Hiroshi Sasaki, Tatsuo Nakata
  • Publication number: 20060158721
    Abstract: A confocal microscope comprises a light source emitting a polarized light beam, an objective lens irradiating the polarized light beam, which is deflected and scanned by the optical scanner, to the sample as an excitation light beam, a wavelength separator detecting a necessary wavelength band from a polarized fluorescence emitted from the sample which is excited by the polarized light beam, and a photodetector unit having a polarization property extractor extracting a fluorescence with a predetermined polarization property from the fluorescence detected with the wavelength separator, a wavelength selector selecting a wavelength of the fluorescence extracted by the polarization property extractor, and a photodetector detecting the fluorescence selected by the wavelength selector.
    Type: Application
    Filed: February 24, 2006
    Publication date: July 20, 2006
    Applicant: OLYMPUS OPTICAL CO., LTD
    Inventors: Tatsuo Nakata, Masahiro Aoki
  • Publication number: 20060146402
    Abstract: A laser scanning microscope includes a light source unit that emits laser light, a scanning unit that scans the laser light, an optical system that converges the laser light into a specimen, a light detecting unit that detects fluorescence generated from the specimen, and a filter unit located on an optical path of light entering the light detecting unit. The filter unit includes a short pass filter that has a large number of independent filter cells in different wavelength ranges formed in line on a common substrate, and a long pass filter that has a large number of independent filter cells in different wavelength ranges formed in line on a common substrate. The filter unit has a characteristic of a bandpass filter having a desired wavelength range owing to a combination of the filter cells of the short pass filter and the filter cells of the long pass filter.
    Type: Application
    Filed: December 22, 2005
    Publication date: July 6, 2006
    Applicant: OLYMPUS CORPORATION
    Inventor: Tatsuo Nakata
  • Publication number: 20060129353
    Abstract: A laser scanning microscope capable of quickly and accurately setting control values of control items for a microscope apparatus is provided. The control items and a time line are displayed along a vertical axis and a horizontal axis, respectively. The laser scanning microscope includes a graphical user interface configured to set the control values of the control items along the time line and a control unit configured to acquire luminance information of a specimen by irradiating the specimen with a laser beam in accordance with the control values set by the graphical user interface.
    Type: Application
    Filed: December 5, 2005
    Publication date: June 15, 2006
    Applicant: Olympus Corporation
    Inventors: Toshiyuki Hattori, Mitsuhiro Nakano, Yusuke Yamashita, Hiroshi Hirayama, Tatsuo Nakata
  • Publication number: 20060126170
    Abstract: Light emitted from a light source is condensed and a sample is irradiated by the condensed beam by an optical system. The light emitted from the sample because of the irradiation is incident on a light detection unit via a wavelength selective optical device having different transmittances depending on wavelengths, a dispersive unit for spectrally resolving light, a wavelength range selection unit for selecting light having a wavelength in a prescribed wavelength range among the light resolved spectrally. A correction unit adjusts a light intensity signal output from the light detection unit based on at least one of a wavelength characteristics of the wavelength selective optical device and the light detection unit respectively.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 15, 2006
    Applicant: Olympus Corporation
    Inventors: Yusuke Yamashita, Tatsuo Nakata, Shingo Suzuki
  • Patent number: 7038848
    Abstract: A confocal microscope comprises a light source emitting a polarized light beam, an objective lens irradiating the polarized light beam, which is deflected and scanned by the optical scanner, to the sample as an excitation light beam, a wavelength separator detecting a necessary wavelength band from a polarized fluorescence emitted from the sample which is excited by the polarized light beam, and a photodetector unit having a polarization property extractor extracting a fluorescence with a predetermined polarization property from the fluorescence detected with the wavelength separator, a wavelength selector selecting a wavelength of the fluorescence extracted by the polarization property extractor, and a photodetector detecting the fluorescence selected by the wavelength selector.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: May 2, 2006
    Assignee: Olympus Corporation
    Inventors: Tatsuo Nakata, Masahiro Aoki
  • Publication number: 20060086887
    Abstract: A laser scanning microscope which focuses light beams from a laser beam source to a sample by means of an objective lens and detects transmission light from the sample, reflection light, or fluorescence generated from the sample, includes an observation laser scanning optical system which irradiates coherent light from one side of the sample and which carries out scanning the sample, a stimulation laser scanning optical system which irradiates coherent light from an opposite side across the sample and which carries out scanning the sample, an observation light detector provided to be branched from the observation laser scanning optical system, and a light invasion preventing section which prevents the coherent light irradiated from the stimulation laser scanning optical system from invading the observation light detector.
    Type: Application
    Filed: October 18, 2005
    Publication date: April 27, 2006
    Applicant: OLYMPUS CORPORATION
    Inventors: Tatsuo Nakata, Masahiro Oba
  • Patent number: 7015444
    Abstract: The invention provides an optical-scanning examination apparatus with a simple configuration, in which the resolution of acquired images can be freely changed and in which the fluorescence image intensity and examination depth can be adjusted to suit the purpose of examination. The optical-scanning examination apparatus includes a light source unit; a focusing lens for forming a first intermediate image of excitation light; an imaging lens; a first objective lens; an optical fiber bundle; a second objective lens; and an imaging unit for imaging return light that returns via the second objective lens, the optical fiber bundle, the first objective lens, and the imaging lens. In addition, a scanning mirror device, which is disposed at the first intermediate image position, is formed of a plurality of mirrors that simultaneously receive the first intermediate image and that can be selectively turned on and off.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: March 21, 2006
    Assignee: Olympus Corporation
    Inventors: Yoshihiro Kawano, Tadashi Hirata, Tatsuo Nakata, Yoshihisa Tanikawa
  • Publication number: 20050280818
    Abstract: A confocal observation system, comprising, an image acquisition unit for acquiring optical cross sectional images of a three-dimensional specimen, a three-dimensional image construction unit for constructing a three-dimensional image from the optical cross sectional images acquired by the image acquisition unit, a specification unit for specifying a desired three-dimensional region in the three-dimensional image constructed by the three-dimensional image construction unit, and a region acquisition unit for acquiring a cross sectional region to be irradiated with excitation light or stimulation light based on the three-dimensional region specified by the specification unit, wherein the excitation light or the stimulation light irradiates a region in the three-dimensional specimen corresponding to the cross sectional region acquired by the region acquisition unit.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 22, 2005
    Applicant: Olympus Corporation
    Inventors: Yusuke Yamashita, Kei Tsuyuki, Tatsuo Nakata
  • Publication number: 20050279950
    Abstract: The invention provides a multiphoton-excitation-type examination apparatus that efficiently generates a multiphoton-excitation effect, that makes the measurement head compact, and that can be easily adjusted when the measurement head is replaced. The multiphoton-excitation-type examination apparatus comprises a laser light source that oscillates ultrashort pulsed laser light; an optical fiber that transmits the ultrashort pulsed laser light from the laser light source; a support member; a measurement head supported on the support member so as to be movable upwards and downwards and at an angle, and having an optical system that irradiates a specimen with the ultrashort pulsed laser light transmitted by the optical fiber that measures fluorescence or reflected light coming from the specimen; and a dispersion-compensating member, in the measurement head, that compensates for group velocity dispersion of the ultrashort pulsed laser light irradiated onto the specimen.
    Type: Application
    Filed: March 3, 2005
    Publication date: December 22, 2005
    Inventors: Yoshihiro Kawano, Tadashi Hirata, Tatsuo Nakata, Hiroshi Sasaki
  • Publication number: 20050253056
    Abstract: The invention provides an optical stimulation apparatus including a light source; a scanning unit that scans light from the light source; and an objective optical system that images the light scanned by the scanning unit onto a specimen. The scanning unit includes an acousto-optic device that varies the diffraction angle in response to a vibration frequency input thereto.
    Type: Application
    Filed: May 2, 2005
    Publication date: November 17, 2005
    Inventor: Tatsuo Nakata
  • Publication number: 20050219687
    Abstract: A system microscope includes a microscope body, a stage which is provided on an upper portion of the microscope body and on which a sample is placed, a lower objective lens provided below the stage, an upper objective lens provided above the stage, a portal support member which is provided on the upper portion of the microscope body so as to straddle the stage, a lower illumination device which is provided for the microscope body and illuminates the sample from below, an upper illumination device which is provided on the portal support member and illuminates the sample from above, a lower eyepiece lens which is provided for the microscope body and acquires an observation image of the sample from the lower objective lens, and an upper eyepiece lens which is provided on the portal support member and acquires an observation image of the sample from the upper objective lens.
    Type: Application
    Filed: March 9, 2005
    Publication date: October 6, 2005
    Applicant: Olympus Corporation
    Inventors: Yasushi Aono, Tatsuo Nakata, Atsuhiro Tsuchiya
  • Publication number: 20050211872
    Abstract: The invention provides an optical-scanning examination apparatus with a simple configuration, in which the resolution of acquired images can be freely changed and in which the fluorescence image intensity and examination depth can be adjusted to suit the purpose of examination. The optical-scanning examination apparatus includes a light source unit; a focusing lens for forming a first intermediate image of excitation light; an imaging lens; a first objective lens; an optical fiber bundle; a second objective lens; and an imaging unit for imaging return light that returns via the second objective lens, the optical fiber bundle, the first objective lens, and the imaging lens. In addition, a scanning mirror device, which is disposed at the first intermediate image position, is formed of a plurality of mirrors that simultaneously receive the first intermediate image and that can be selectively turned on and off.
    Type: Application
    Filed: March 22, 2005
    Publication date: September 29, 2005
    Inventors: Yoshihiro Kawano, Tadashi Hirata, Tatsuo Nakata, Yoshihisa Tanikawa
  • Publication number: 20050179903
    Abstract: A total internal reflection fluorescence microscope includes a light source which generates laser light having a plurality of wavelengths, a focal optical system which irradiates the laser light from the light source on a specimen at a predetermined incident angle via an objective lens and which generates evanescent illumination, a fluorescence observation unit which observes fluorescence generated from the specimen due to the evanescent illumination, an incident angle adjuster which adjusts the incident angle of the laser light irradiated on the specimen, and a controller which controls the incident angle adjuster such that the amount of the permeation depth of the evanescent light is the same when the wavelength of the laser light from the laser light source is switched.
    Type: Application
    Filed: February 4, 2005
    Publication date: August 18, 2005
    Applicant: Olympus Corporation
    Inventors: Hiroshi Tsuruta, Hiroshi Sasaki, Kenichi Kusaka, Akinori Araya, Tatsuo Nakata
  • Patent number: 6903816
    Abstract: A mirror driving mechanism comprises a driver configured to drive at least one mirror which reflects a light flux while adjusting a wavelength width and a wavelength band of the light flux separated in a spectrum, and a controller configured to control the driver.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: June 7, 2005
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tatsuo Nakata, Yoshihiro Shimada, Yasuaki Natori
  • Publication number: 20050024719
    Abstract: A confocal microscope comprises a light source unit having at least two light sources which generate lights having different wavelengths, an objective lens which condenses light from the light source unit on a sample, a light scanning unit which scans the light form the light source unit on the sample two-dimensionally, and a photonic crystal fiber which is disposed between the light source unit and the light scanning unit, and which propagates the light led from the light source unit to the light scanning unit side, wherein the photonic crystal fiber has a plurality of air holes arranged at a clad provided at a periphery of a core.
    Type: Application
    Filed: July 26, 2004
    Publication date: February 3, 2005
    Applicant: Olympus Corporation
    Inventor: Tatsuo Nakata
  • Publication number: 20040150880
    Abstract: A confocal microscope comprises a light source emitting a polarized light beam, an objective lens irradiating the polarized light beam, which is deflected and scanned by the optical scanner, to the sample as an excitation light beam, a wavelength separator detecting a necessary wavelength band from a polarized fluorescence emitted from the sample which is excited by the polarized light beam, and a photodetector unit having a polarization property extractor extracting a fluorescence with a predetermined polarization property from the fluorescence detected with the wavelength separator, a wavelength selector selecting a wavelength of the fluorescence extracted by the polarization property extractor, and a photodetector detecting the fluorescence selected by the wavelength selector.
    Type: Application
    Filed: December 18, 2003
    Publication date: August 5, 2004
    Applicant: Olympus Corporation
    Inventors: Tatsuo Nakata, Masahiro Aoki