Patents by Inventor Kaoru Kumagai

Kaoru Kumagai 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: 10712153
    Abstract: Provided is a method for controlling an ultrasonic motor to reduce deterioration of automatic tracking performance, and a surveying instrument for the same. The present invention provides a method for controlling an ultrasonic motor in a surveying instrument including a rotary shaft, an ultrasonic motor that drives a rotary shaft, a tracking unit that includes a light emitting unit and a light receiving unit and tracks a target, and a clock signal oscillation unit that outputs a clock signal, wherein at the time of low-speed rotation of the ultrasonic motor, based on the clock signal, a ratio of an acceleration period in which a drive signal is applied and a deceleration period in which the drive signal is stopped in a drive cycle of the drive signal of the ultrasonic motor is set, and the light emitting unit is made to emit light in the deceleration period.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: July 14, 2020
    Assignee: TOPCON CORPORATION
    Inventors: Kaoru Kumagai, Satoshi Yanobe, Tetsutaro Kouji
  • Patent number: 10697758
    Abstract: A laser remote length measurement instrument capable of remotely measuring a length between two required points in a non-contact manner is provided. The laser remote length measurement instrument includes a rangefinding unit, an optical axis deflection section, a rotation angle detector, and a computation controller. The rangefinding unit is configured to cause a light emitting element to emit visible rangefinding light and obtain a light reception signal. The optical axis deflection section is configured to scan to-and-fro between two directions with the rangefinding light. The rotation angle detector is configured to detect a divergence angle between the two directions. The computation controller is configured to compute a distance between illuminated points in the two directions illuminated with the rangefinding light on the basis of rangefinding results for the illuminated points and the divergence angle between the two directions.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: June 30, 2020
    Assignee: TOPCON CORPORATION
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Publication number: 20200182614
    Abstract: There is provided a surveying instrument including a distance measuring unit configured to measure a distance to an object to be measured, a measuring direction image pickup module which includes the object to be measured and is configured to acquire as observation image, an attitude detector is configured to detect a tilt of the surveying instrument main body and a arithmetic control module, and wherein the arithmetic control module is configured to extract each common corresponding point from a first image acquired at a first installing point and a second image acquired at a second installing point, perform the matching based on the corresponding point, and make a measurement of a positional relationship of the object to be measured with respect to the first installing point and the second installing point based on a matching image.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 11, 2020
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Patent number: 10670493
    Abstract: The invention provides a safety diagnosis system for structure, which comprises one GNSS receiver installed on an upper floor of a structure, a control device having a storage unit for storing a program which prepares an absolute displacement curve of the structure based on an absolute coordinate measured by the GNSS receiver and a displacement of the absolute coordinate, calculates a maximum inter-layer displacement and a maximum inter-layer deformation angle per each floor based on the absolute displacement curve and prepares an inter-layer deformation angle curve and a judging unit for performing a diagnosis of the safety of the structure based on the maximum inter-layer displacement and the maximum inter-layer deformation angle, and a display unit, wherein the control device calculates the maximum inter-layer displacement and the maximum inter-layer deformation angle per each floor and the inter-layer deformation angle curve based on a displacement of the absolute coordinate and the program and makes the
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 2, 2020
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Tadayuki Morishita, Yoshihito Saito, Hiroaki Ryujin, Koichiro Fuse, Kazuhiro Ogawa, Kaoru Kumagai, Ritsuo Sakimura
  • Patent number: 10634496
    Abstract: A surveying system comprises a total station unit, a laser scanner unit and an arithmetic control unit. The total station unit comprises a frame unit, a telescope unit, a total station distance measuring unit accommodated in the telescope unit and a total station arithmetic control unit, wherein the laser scanner unit is provided on the frame unit and acquires point cloud data by rotatably irradiating a laser beam in a vertical direction, and wherein the arithmetic control unit acquires the point cloud data by a cooperation of a horizontal rotation of the frame unit and a rotary irradiation of the laser beam, compares a distance measurement result of the total station unit with a distance measurement result of the laser scanner unit and corrects the point cloud data based on a comparison result.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: April 28, 2020
    Assignee: TOPCON Corporation
    Inventors: Kaoru Kumagai, Jun-ichi Kodaira
  • Patent number: 10634795
    Abstract: The invention provides a rover, which comprises a pole of which lower end indicates a point to be measured, a measurement auxiliary apparatus provided at a predetermined position of the pole, a direction detecting device integrally provided with the measurement auxiliary apparatus and for detecting a direction of the measurement auxiliary apparatus, and an object to be measured provided at a known distance from the lower end of the pole, wherein the measurement auxiliary apparatus comprises a horizontal detecting unit which is supported so as to be rotatable around two shafts orthogonal to each other and detects the tilts in two axial directions, motors provided so as to rotate the shafts, encoders provided respectively on the shafts, and an arithmetic processing component for controlling the motors in such a manner that the horizontal detecting unit becomes horizontal based on a detection result from the horizontal detecting unit, wherein the encoders are configured to detect a rotation amount of each shaft
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: April 28, 2020
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Patent number: 10625519
    Abstract: An ink jet recording method includes ejecting an ultraviolet-ray curable ink of which a viscosity at 28° C. is 8 mPa·s or more from a head to a recording medium, and curing the ultraviolet-ray curable ink attached to the recording medium, wherein, in the ejecting of the ultraviolet-ray curable ink, the ultraviolet-ray curable ink is heated such that a temperature of the ejected ultraviolet-ray curable ink becomes 28° C. to 40° C., and a viscosity of the ultraviolet-ray curable ink at the temperature is 15 mPa·s or less.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: April 21, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Yoshihiro Kobayashi, Yusuke Mizutaki, Toshio Kumagai, Masaaki Ando, Hiroaki Kida, Kaoru Koike, Mitsuaki Yoshizawa
  • Publication number: 20200096334
    Abstract: A surveying instrument comprises a distance measuring light projecting module, a light receiving module, an optical axis deflector which integrally deflects a distance measuring optical axis and a light receiving optical axis, a wide-angle image pickup module, a projecting direction detecting module configured to detect an optical axis deflection angle and a deflecting direction, a narrow-angle image pickup module, a distance measurement calculating module and an arithmetic control module, wherein the arithmetic control module is configured to control the optical axis deflector and the distance measurement calculating module, wherein the distance measurement calculating module is configured to perform a distance measurement of a measuring point based on a light emission timing of a distance measuring light and a light reception timing of a reflected distance measuring light, and wherein the narrow-angle image pickup module is configured to acquire a narrow-angle image with the distance measuring optical axis
    Type: Application
    Filed: September 16, 2019
    Publication date: March 26, 2020
    Inventors: Fumio Ohtomo, Ikuo Ishinabe, Kaoru Kumagai
  • Publication number: 20200081266
    Abstract: A surveying instrument comprises a distance measuring unit configured to measure a distance to an object to be measured, an optical axis deflector configured to deflect a distance measuring light, a measuring direction image pickup module configured to acquires an observation image and an arithmetic control module, wherein the arithmetic control module is configured to continuously cut out sighting images around a tracking point set in the observation image, to set a first cutout sighting image as a reference sighting image, to calculate a movement amount of the sighting image with respect to the reference sighting image by an image matching of the reference sighting image and the sighting image and to control the optical axis deflector based on a calculation result in such a manner that the tracking point is positioned at a center of the sighting image.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 12, 2020
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Patent number: 10520307
    Abstract: The invention provides a surveying instrument, which comprises a measuring unit for performing a distance measurement by projecting a distance measuring light toward an object to be measured, an image pickup unit for picking up an image including the object to be measured, an attitude detecting unit provided integrally with the image pickup unit, and an arithmetic processing unit, wherein the attitude detecting unit has tilt sensors for detecting a horizontal and a relative tilt angle detecting unit for detecting a tilt angle of the measuring unit with respect to the horizontal, and wherein the arithmetic processing unit calculates a tilting of the image with respect to a vertical based on a detection result of the attitude detecting unit and displays vertical lines in the image acquired by the image pickup unit based on this calculation result.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: December 31, 2019
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Publication number: 20190360806
    Abstract: A surveying instrument comprises a monopod installed at a reference point, a surveying instrument main body provided at the monopod and having an attitude detector, wherein the surveying instrument main body carries out an image pickup and a scanning of an object to be measured at a pre-movement and a post-movement respectively, obtains at least three cross points of a locus of a scan pattern of the pre-movement and the post-movement, and calculates three-dimensional coordinates of an installation point of the post-movement based on three-dimensional coordinates of the cross points measured from the reference point, a measurement result of the cross points measured from the installation point of the post-movement and a detection result of the attitude detector.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 28, 2019
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Publication number: 20190346539
    Abstract: A surveying system comprises an object to be measured having a retro-reflector and a surveying instrument main body for emitting a distance measuring light and performing a measurement based on a reflected distance measuring light, wherein the surveying instrument main body comprises a distance measuring light projecting module, a photodetector, a measuring unit, an optical axis deflector which has a reference optical axis and deflects a distance measuring optical axis, a projecting direction detecting module which detects a deflection angle and a deflection angle direction of the distance measuring optical axis, and an arithmetic control module, and wherein the arithmetic control module is configured to control the optical axis deflector, to perform a two-dimensional scan with the distance measuring light, to detect the deflection angle direction of the distance measuring light at a moment of detecting a photodetecting signal by the projecting direction detecting module, and to move an approximate center of
    Type: Application
    Filed: April 30, 2019
    Publication date: November 14, 2019
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Patent number: 10473462
    Abstract: The system includes a survey machine having an image-taking section, a section of measuring a distance to a target and a section of measuring an angle, a pointing rod which is positioned on the measurement point X and includes, at a position deviated from a fixed length L from the measurement point, the prism, and an inclination sheet having a mark. The three-dimensional position of the measurement point is measured by equipping the inclination sheet to the pointing rod, imaging a mark surface in the image-taking section, calculating the inclination angle of the inclination sheet with respect to the eye direction from the survey machine by image-analyzing the mark surface, and determining the three-dimensional position of the measurement point from a three-dimensional position of the prism, the inclination angle of the inclination sheet and the fixed length.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: November 12, 2019
    Assignee: KABUSHIKI KAISHA TOPCON
    Inventors: Nobuyuki Nishita, Kaoru Kumagai
  • Patent number: 10473453
    Abstract: A position at which evaluation of a defect was performed is easily identified. Relative positional relationships between three-dimensional coordinates of feature points of a photographed object and positions of a panoramic camera 111 are calculated based on a moving image, which is photographed by the panoramic camera 111 while a vehicle 100 travels. The position of the object photographed by a hyperspectral camera 114 is calculated based on the relative positional relationships and exterior orientation parameters of the hyperspectral camera 114 with respect to the panoramic camera 111.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: November 12, 2019
    Assignee: KABUSHIKI KAISHA TOPCON
    Inventors: Kaoru Kumagai, Kunihiro Hayashi, Naoto Kasori
  • Publication number: 20190339075
    Abstract: A surveying instrument comprises a monopod installed on a reference point, a surveying instrument main body provided at a known distance from a lower end of the monopod and at a known angle with respect to an axis of the monopod and having a reference optical axis, wherein the surveying instrument main body performs an image pickup of an object to be measured and scans the object to be measured by a closed loop scan pattern respectively at a pre-rotation and a post-rotation of the surveying instrument main body, obtains cross points of a locus of a scan pattern of the pre-rotation and the post-rotation, obtains deflection angles of the cross point with respect to the reference optical axis of the pre-rotation and the post-rotation, and calculates a rotation angle of the surveying instrument main body based on a deviation between both of the deflection angles.
    Type: Application
    Filed: April 30, 2019
    Publication date: November 7, 2019
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai
  • Publication number: 20190302236
    Abstract: A surveying device body includes a distance measuring section to measure a distance to the measurement target, an optical axis deflector that deflects distance measuring light with respect to a reference optical axis, a measurement direction imaging section that obtains an observation image, and an attitude detector that detects an incline of the surveying device body. A computation controller displays a portion of the observation image on the display unit, computes a direction angle of the distance measuring optical axis on the basis of a detection result of the attitude detector and a deflection angle of the distance measuring optical axis with respect to the reference optical axis, and measures the measurement target on the basis of the direction angle and a distance measurement result of the distance measuring section using a reference point as a reference.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Applicant: TOPCON CORPORATION
    Inventors: Fumio OHTOMO, Kaoru KUMAGAI
  • Patent number: 10371801
    Abstract: The invention provides a measuring instrument, which comprises a measuring unit for projecting a distance measuring light toward an object to be measured and for performing a distance measurement by receiving a reflected light from the object to be measured, and an attitude detecting device integrally provided with the measuring unit, wherein the attitude detecting device has tilt sensors for detecting a horizontality and relative tilt angle detectors for tilting the tilt sensors and for detecting a tilt angle of the measuring unit with respect to the horizontality under such condition that the tilt sensors detects the horizontality so that the horizontality is detected by the tilt sensor, and wherein the distance measurement of the object to be measured is performed by the measuring unit, and a vertical angle of a measuring point is determined based on the result of the tilt detection by the attitude detecting device.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: August 6, 2019
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Patent number: 10345232
    Abstract: A method of measuring a state of concrete includes emitting an irradiation light to the concrete, the irradiation light including a wavelength range of near infrared light related to concrete measurement; and receiving a reflection light of the irradiation light P reflected on the concrete. At least five wavelengths ?1 to ?5, ?6 to ?10, different from each other by PLS regression analysis within a wavelength range of 900 nm to 2500 nm of absorption spectrum, are determined, and a degree of neutralization of the concrete caused by calcium hydroxide and a concentration of chloride ion is estimated.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 9, 2019
    Assignee: TOPCON CORPORATION
    Inventors: Kaoru Kumagai, Shugo Akiyama, Issei Hanya, Peng Zhao, Masashi Funahashi, Yoshimitsu Nakajima, Yuji Shirane
  • Patent number: 10337863
    Abstract: A survey system includes a camera provided on a UAV and taking a plurality of images for photogrammetry. A surveying portion tracking the camera and continuously determining a position of the camera and a relative photographing position calculation portion calculates a relative photographing position of each image based on the plurality of images taken by the camera, and a traveling path calculation portion calculates a traveling path of the UAV from a survey result obtained by the surveying portion. A photogrammetry analysis portion associating a point group of the relative photographing positions calculated by the relative photographing position calculation portion with a flight path calculated by the flight path calculation portion, and generating data for photogrammetry.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: July 2, 2019
    Assignee: TOPCON CORPORATION
    Inventors: Kaoru Kumagai, Nobuyuki Nishita, Takeshi Sasaki
  • Patent number: 10330788
    Abstract: The invention provides a measuring instrument, which comprises a measuring instrument main unit and an installment base unit for rotatably supporting the measuring instrument main unit in an up-to-bottom direction and in a left-to-right direction, wherein the measuring instrument main unit has a measuring unit for projecting a distance measuring light toward an object to be measured and for performing a distance measurement by receiving a reflected light from the object to be measured, and an attitude detecting device integrally provided with the measuring unit, wherein the attitude detecting device has tilt sensors for detecting a horizontality and relative tilt angle detectors for tilting the tilt sensors and for detecting a tilt angle of the measuring unit with respect to the horizontality under such condition that the tilt sensors detect the horizontality so that the horizontality is detected by the tilt sensors, and wherein the installment base unit has an up-to-bottom motor for rotating the measuring in
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: June 25, 2019
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai