Patents by Inventor Kenichi Saito

Kenichi Saito 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: 9775514
    Abstract: An apparatus for measuring a fundus of a subject. The apparatus includes a focusing unit which adjusts a defocus of the apparatus. The focusing unit includes a first focusing mirror and a second focusing mirror. The first focusing mirror and second focusing mirror are arranged so that an incident beam from the light source entering the focusing unit and an emitted beam exiting the focusing unit are substantially parallel to each other. Adjustment of the defocus is accomplished by moving both first focusing mirror and second focusing mirror such that incident beam and emitted beam remain substantially parallel to each other. The apparatus includes a wavefront sensor for detecting a shape of a wavefront. The apparatus includes a wavefront correction device. The wavefront correction device adjusts a wavefront of the light from the light source based on the shape of the wavefront detected by the wavefront sensor.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: October 3, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Saito
  • Publication number: 20170265742
    Abstract: An ophthalmic apparatus includes an AOSLO apparatus, a WFSLO apparatus, and a tracking processor that controls a tracking mirror based on position information calculated from AOSLO and WFSLO images. In another embodiment, the tracking processor controls the tracking mirror based on position information calculated from WFSLO images only. Depending on the amount of movement a target image with respect to a reference image, and the accuracy of detection thereof, the tracking mirror of either the AOSLO apparatus or the WFSLO apparatus can be selectively controlled according to a difference in position of the target image with respect to the reference image.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 21, 2017
    Inventors: Koji NOZATO, Kenichi SAITO, Kaishi OHASHI, Akira SATO, Futoshi HIROSE, Hiroshi IMAMURA
  • Publication number: 20170206657
    Abstract: A method, controller, and non-transitory medium for obtaining images of a moving subject. Estimating changes in position of the subject based on the images. Calculating a quality metric of the estimation of the change. Comparing the quality metric to a threshold. In a first case in which the quality metric is less than the threshold, adjusting position of the scanning area based on the estimated change in position. In a second case in which the quality metric is not less than the threshold, obtaining a new second image.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 20, 2017
    Inventors: Koji Nozato, Kenichi Saito, Qiang Yang
  • Patent number: 9617960
    Abstract: A fuel supply apparatus for an internal combustion engine includes: a feed pump capable of feeding a fuel of the internal combustion engine; a high pressure fuel pump that pressurizes the fuel fed from the feed pump; and a second injector that supplies the pressurized high-pressure fuel to the internal combustion engine selectively. An ECU of the fuel supply apparatus includes: a pulsation width detection unit that detects a pulsation width in a pressure of the fuel fed from the feed pump to the high pressure fuel pump; and a feeding condition determination unit that determines that a condition variation causing fuel vapor to form in the fuel fed to the high pressure fuel pump has occurred when the pulsation width detected by the pulsation width detection unit falls rapidly to a preset threshold variation width.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: April 11, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kenichi Saito
  • Patent number: 9618743
    Abstract: An adaptive optical imaging system for imaging an object including a first polarization sensitive spatial light phase modulator and a second polarization sensitive spatial light phase modulator and a polarization adjustment device that converts the polarization of light that has passed through the first modulator before it irradiates the object and converts the polarization of the reflected light before it passes through the second modulator.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: April 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Saito
  • Patent number: 9567985
    Abstract: A high-pressure pump includes a plunger capable of reciprocating, and a housing having a pressurizing chamber in which fuel is pressurized by the plunger, and a fuel chamber through which the fuel flows toward and from the pressurizing chamber. The pump includes a spring that biases the plunger so as to increase the volume of the pressurizing chamber, and a spring seat that is fixed to the housing and is in contact with one end of the spring. A first space that communicates with the fuel chamber via a fuel passage is provided between the bottom of the spring seat and the housing, and a top face of the bottom exposed to the first space is covered with a heatinginsulating member.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: February 14, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuhiko Akita, Kenichi Saito
  • Publication number: 20170033345
    Abstract: A storage battery includes a negative electrode including, as an active material, at least one of a metal capable of forming a dendrite and a metal compound thereof, a positive electrode, a separator, and an electrolyte containing an additive. In the storage battery, a concentration of the additive in the electrolyte in a region on a side of the negative electrode defined by the separator is higher than a concentration of the additive in a region on a side of the positive electrode.
    Type: Application
    Filed: July 19, 2016
    Publication date: February 2, 2017
    Inventors: Tadashi KAKEYA, Kenichi SAITO, Akiyoshi NAKATA, Hajime ARAI, Zempachi OGUMI
  • Publication number: 20170004344
    Abstract: A system, apparatus, and method of obtaining an image of a fundus. Acquiring a reference image of the fundus at a first point in time. Acquiring a target image of the fundus at a second point in time. The target imaging area may overlap with the reference imaging area. An area of the target imaging area may be less than an area of the reference imaging area. Estimating movement of the fundus may be based upon at least the target image and the reference image. Acquiring a narrow field image of the fundus. An area of the narrow field imaging area may be less than the area of the target imaging area. A position of the narrow imaging area on the fundus may be adjusted based on the estimated movement of the fundus.
    Type: Application
    Filed: July 2, 2015
    Publication date: January 5, 2017
    Inventors: Koji Nozato, Kenichi Saito, Qiang Yang, Jie Zhang
  • Patent number: 9510750
    Abstract: A fundus imaging apparatus comprising: position detection means for detecting a position of a pupil of an eye to be examined; wavefront detection means for detecting a wavefront of return light from the eye irradiated with light through an illumination optical system; correction means for correcting an aberration based on the detected wavefront; and determination means for determining a correction effective region of the correction means based on the detected position.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: December 6, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Saito
  • Patent number: 9498119
    Abstract: An adaptive optics system includes an irradiation unit adapted to irradiate an object with measurement light via a spatial light modulator; a detection unit adapted to detect a wavefront of return light from the object by a microlens array in which a plurality of microlenses are arranged; an acquisition unit adapted to acquire, based on the wavefront detected by the detection unit, correction data for correcting the wavefront by phase wrapping in the spatial light modulator; and a control unit adapted to perform control such that a wavefront discontinuous part formed by the phase wrapping determined by the correction data is held at not less than a predetermined distance from a center of each of the microlenses in the microlens array.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: November 22, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenichi Saito, Kohei Takeno
  • Publication number: 20160278632
    Abstract: An adaptive optical imaging system for imaging an object including a first polarization sensitive spatial light phase modulator and a second polarization sensitive spatial light phase modulator and a polarization adjustment device that converts the polarization of light that has passed through the first modulator before it irradiates the object and converts the polarization of the reflected light before it passes through the second modulator.
    Type: Application
    Filed: March 26, 2015
    Publication date: September 29, 2016
    Inventor: Kenichi Saito
  • Patent number: 9455123
    Abstract: A current regulation method of multiple beams includes acquiring a current density distribution; selecting at least one beam whose current density is equal to or more than a threshold; measuring a current value of the at least one beam respectively by varying a voltage applied to the Wehnelt electrode and acquiring a correlation between the voltage and the current value; moving a stage to a position where the at least one beam is allowed to enter a current detector each time writing of a stripe region is completed; measuring, after moving the stage, a current value of the at least one beam while beams of the multiple beams whose current density is less than the threshold are blocked; operating a target voltage value applied to the Wehnelt electrode to cause the current value measured to be a target current value; and applying the target voltage value to the Wehnelt electrode.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: September 27, 2016
    Assignee: NuFlare Technology, Inc.
    Inventor: Kenichi Saito
  • Patent number: 9435303
    Abstract: In a fuel injection valve support structure which can apply a substantially constant set load, the fuel injection valve has first and second load receiving portions, the first load receiving portion being supported on the engine, the second load receiving portion being supported on an elastic support member which receives a set load from a fuel supply cap. The elastic support member includes a base plate placed on the second load receiving portion, and an elastic piece curving rearward from one end toward the other end of the base plate, with an apex portion in pressure contact with the cap, the base plate has a portion overhanging from the second load receiving portion and supporting a tip end portion of the elastic piece. The overhang portion starts bending when a load the overhang portion receives from the cap through the elastic piece reaches or exceeds a predetermined value.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: September 6, 2016
    Assignee: Keihin Corporation
    Inventors: Takahiro Yasuda, Noriaki Sumisya, Daisuke Kondo, Kenichi Saito
  • Publication number: 20160249803
    Abstract: An apparatus for measuring a fundus of a subject. The apparatus includes a focusing unit which adjusts a defocus of the apparatus. The focusing unit includes a first focusing mirror and a second focusing mirror. The first focusing mirror and second focusing mirror are arranged so that an incident beam from the light source entering the focusing unit and an emitted beam exiting the focusing unit are substantially parallel to each other. Adjustment of the defocus is accomplished by moving both first focusing mirror and second focusing mirror such that incident beam and emitted beam remain substantially parallel to each other. The apparatus includes a wavefront sensor for detecting a shape of a wavefront. The apparatus includes a wavefront correction device. The wavefront correction device adjusts a wavefront of the light from the light source based on the shape of the wavefront detected by the wavefront sensor.
    Type: Application
    Filed: February 26, 2015
    Publication date: September 1, 2016
    Inventor: Kenichi SAITO
  • Patent number: 9421890
    Abstract: A vehicle seat is provided in which a pressure-receiving member receiving the back of an occupant through an upper linking wire is supported on a seat back frame of a seat back, and an abutment member is provided on the pressure-receiving member, the abutment member restricting an amount of flexing of the pressure-receiving member by abutting against the upper linking wire when the amount of flexing exceeds a predetermined amount. This enables the amount of flexing of the pressure-receiving member for supporting the back of the occupant to be restricted, thereby stabilizing the support of the occupant.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: August 23, 2016
    Assignees: TS Tech Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Takeshi Akutsu, Hisato Oku, Ryosuke Nakashima, Kenichi Saito
  • Patent number: 9412551
    Abstract: A cathode obtaining method includes producing a plurality of cathodes each including an electron emission member and a cover part, provided with a gap, which covers a side surface of the electron emission member, measuring an outer dimension of the upper surface of the electron emission member, for each of a plurality of cathodes, measuring an outer dimension of the gap at the same surface as the upper surface of the electron emission member, for each of a plurality of cathodes, calculating an area ratio by dividing the area of the gap, for each of a plurality of cathodes, obtaining an upper limit of the area ratio corresponding to a desired brightness by using a correlation between brightness and the area ratio, and selecting a cathode having the area ratio less than or equal to the upper limit from a plurality of cathodes that have been produced.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: August 9, 2016
    Assignee: NuFlare Technology, Inc.
    Inventors: Kenichi Saito, Ryoei Kobayashi
  • Patent number: 9371805
    Abstract: In a fuel injection valve support structure which can apply a substantially constant set load, the fuel injection valve has first and second load receiving portions, the first load receiving portion being supported on the engine, the second load receiving portion being supported on an elastic support member which receives a set load from a fuel supply cap. The elastic support member includes a base plate placed on the second load receiving portion, and an elastic piece curving rearward from one end toward the other end of the base plate, with an apex portion in pressure contact with the cap, the base plate has a portion overhanging from the second load receiving portion and supporting a tip end portion of the elastic piece. The overhang portion starts bending when a load the overhang portion receives from the cap through the elastic piece reaches or exceeds a predetermined value.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: June 21, 2016
    Assignee: Keihin Corporation
    Inventors: Takahiro Yasuda, Noriaki Sumisya, Daisuke Kondo, Kenichi Saito
  • Publication number: 20150374229
    Abstract: A fundus imaging apparatus comprising: position detection means for detecting a position of a pupil of an eye to be examined; wavefront detection means for detecting a wavefront of return light from the eye irradiated with light through an illumination optical system; correction means for correcting an aberration based on the detected wavefront; and determination means for determining a correction effective region of the correction means based on the detected position.
    Type: Application
    Filed: September 10, 2015
    Publication date: December 31, 2015
    Inventor: Kenichi Saito
  • Publication number: 20150357146
    Abstract: A cathode obtaining method includes producing a plurality of cathodes each including an electron emission member and a cover part, provided with a gap, which covers a side surface of the electron emission member, measuring an outer dimension of the upper surface of the electron emission member, for each of a plurality of cathodes, measuring an outer dimension of the gap at the same surface as the upper surface of the electron emission member, for each of a plurality of cathodes, calculating an area ratio by dividing the area of the gap, for each of a plurality of cathodes, obtaining an upper limit of the area ratio corresponding to a desired brightness by using a correlation between brightness and the area ratio, and selecting a cathode having the area ratio less than or equal to the upper limit from a plurality of cathodes that have been produced.
    Type: Application
    Filed: May 26, 2015
    Publication date: December 10, 2015
    Applicant: NuFlare Technology, Inc.
    Inventors: Kenichi SAITO, Ryoei KOBAYASHI
  • Patent number: 9204791
    Abstract: Provided is an ocular optical system, which permits a measuring beam scanned by two scanning units disposed close to each other to enter an anterior ocular segment of an eye to be inspected and to irradiate a fundus. The ocular optical system includes an optical unit which is disposed at a position of an intermediate image, which is optically conjugate to the fundus, and has a surface having different optical powers corresponding to scan directions of the two scanning units.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: December 8, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Saito