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: 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
  • Publication number: 20190186912
    Abstract: A surveying instrument comprises a monopod installed on a reference point, a surveying instrument main body having a reference optical axis and an operation panel, wherein the surveying instrument main body has a distance measuring unit, an arithmetic control module, a measuring direction image pickup module which acquires a first image, and an attitude detector which detects tilts of two axes of the surveying instrument main body to the horizontal, and wherein the operation panel has a display unit, a calculating module, and as operation module, and the at least either one of the arithmetic control module and the calculating module calculates a tilt angle of the reference optical axis to the horizontal and a tilt angle of the monopod to the vertical, and the at least either one measures a horizontal distance and a vertical distance to the object to be measured with reference to the reference point.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 20, 2019
    Inventors: Fumio Ohtomo, Tetsuji Anai, Kaoru Kumagai
  • Patent number: 10324183
    Abstract: The invention provides a UAV measuring apparatus, which comprises a flying vehicle, a laser scanner mounted on the flying vehicle and for performing two-dimensional scanning with a reference optical axis extending in an approximately vertically downward direction as the center, an image pickup unit having an image pickup optical axis parallel to the reference optical axis and a control arithmetic component, wherein the control arithmetic component is configured to synchronize the two-dimensional scanning performed by the laser scanner with an image pickup performed by the image pickup unit, and to correspond a scanning locus obtained by the two-dimensional scanning with an acquired image.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 18, 2019
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Patent number: 10309774
    Abstract: The invention provides a surveying instrument, which comprises a first optical axis deflecting unit disposed on a projection optical axis of a distance measuring light for deflecting an optical axis of the distance measuring light at a deflection angle and in a direction as required, a second optical axis deflecting unit disposed on a light receiving optical axis for deflecting the reflected distance measuring light at the same deflection angle and in the same direction as the first optical axis deflecting unit and a projecting direction detecting unit for detecting a deflection angle and a deflecting direction by the first optical axis deflecting unit, wherein the distance measuring light is projected through the first optical axis deflecting unit and the reflected distance measuring light is received by the photodetection element through the second optical axis deflecting unit.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: June 4, 2019
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Publication number: 20190162853
    Abstract: A surveying instrument comprises a first measuring component having a control module and a second measuring component, wherein the control module acquires point cloud data of a whole circumference in a room with the use of the second measuring component in accordance with each installation point, makes the first measuring component to measure a predetermined position in the room, prepares outer shape data of a same height and a same shape in accordance with each installation point based on a measurement result of the first measuring component or the second measuring component, performs a shape matching of each outer shape data, and registers each point cloud data based on a movement amount and a rotation amount at the time of performing the shape matching.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 30, 2019
    Inventors: Kaoru Kumagai, Ken-ichiro Yoshino
  • Publication number: 20190154805
    Abstract: A distance measuring light projecting module comprises a light receiving module for receiving a reflected distance measuring light and a background light, a distance measuring unit for receiving the reflected distance measuring light and performs a distance measurement, an image pickup module for receiving the background light and for acquiring a background image, an optical axis deflector for integrally deflecting an optical axis of the distance measuring light and an optical axis of the background light, and an arithmetic control module for controlling the optical axis deflector, wherein the optical axis deflector has a rotary driving module for rotating a pair of disk prisms individually, and a projecting direction detecting module for detecting a rotation angle of each of the disk prisms.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 23, 2019
    Inventors: Fumio Ohtomo, Ikuo Ishinabe, Kaoru Kumagai
  • Patent number: 10281580
    Abstract: The invention provides a surveying system, which comprises a surveying instrument, wherein the surveying instrument comprises a measuring unit for performing a distance measurement by projecting a distance measuring light toward an object to be measured and by receiving a reflected distance measuring light from the object to be measured, an image pickup unit having an image pickup optical axis running in parallel to a projection optical axis of the distance measuring light and for picking up an image including the object to be measured, an attitude detecting unit provided integrally with the measuring unit and for detecting a tilt angle with respect to the horizontal of the measuring unit, a coordinates acquiring unit for detecting a position of the surveying instrument and an arithmetic processing unit, wherein a first image of the object to be measured is acquired by the image pickup unit from a first position where coordinates of the first position are acquired by the coordinates acquiring unit, a second i
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: May 7, 2019
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Hitoshi Otani, Tetsuji Anai
  • Patent number: 10264221
    Abstract: To provide a measurement system in which a desired reflection target is properly identified. The system 1 includes a prism 4, and a total station 3 which, for conducting distance measurement based on reflected distance-measuring rays which are output to the prism 4 and reflected therefrom. The prism 4 is equipped with specific identification information such that the total station 3 sets up the identification information 6, and incorporates the specific identification information 6 of the prism 4 for checking the above specific identification information 6 and the setup identification information 6.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: April 16, 2019
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Kaoru Kumagai, Nobuyuki Nishita, Jumpei Kochi
  • Patent number: 10262435
    Abstract: To provide a surveying instrument capable of evaluating tracking performance without using a device other than the surveying instrument. In order to attain the object described above, a surveying instrument includes a tracking section that detects a position of a target from a shot image, a virtual target position calculating section, a virtual tracking section that converts a position of a virtual target as if it was captured by the tracking section, a tracking arithmetic section that handles an output of the virtual tracking section the same as an output of the tracking section and determines rotational movements of a horizontal shaft and a vertical shaft, a motor control section, motors that rotate the horizontal shaft and the vertical shaft, and encoders that detect rotation amounts of the horizontal shaft and the vertical shaft.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: April 16, 2019
    Assignee: TOPCON CORPORATION
    Inventors: Satoshi Yanobe, Kaoru Kumagai
  • Publication number: 20190094363
    Abstract: A laser measuring instrument comprises a light emitter, a driver, a scanning unit, a light receiving signal processing module for detecting a reciprocating time per pulsed light of a distance measuring light and performing a distance measurement, and a timing generating circuit for issuing a timing signal, wherein the timing generating circuit is configured to issue a timing signal for making the light emitter pulse-emit in a short cycle and a timing signal for pausing a light emission, the driver is configured to make the light emitter pulse-emit according to the timing signals, a light emission time interval in the short cycle is set such that a measuring point is multiply irradiated with the pulsed light by two or more times within a time when the pulsed light passes the measuring point, and the light receiving signal processing module is configured to integrate acquired light receiving signals and to carry out the distance measurement.
    Type: Application
    Filed: September 17, 2018
    Publication date: March 28, 2019
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Ken-ichiro Yoshino
  • Publication number: 20190063922
    Abstract: A surveying system comprising a rover having an illuminating lamp for emitting an illumination light, a second azimuth indicator for detecting an azimuth angle of an optical axis of the illumination light, a surveying instrument comprises a surveying instrument main body and a rotary driving unit capable of rotating the surveying instrument main body in at least a left-and-right direction, wherein the surveying instrument main body comprises a first azimuth indicator for detecting an azimuth angle of a reference optical axis, and as arithmetic control module, and wherein the arithmetic control module is configured to calculate the azimuth angle of the reference optical axis which is in parallel or approximately parallel with the optical axis of the illumination light based on the azimuth angle of the optical axis of the illumination light received from the rover and the azimuth angle of the reference optical axis.
    Type: Application
    Filed: July 25, 2018
    Publication date: February 28, 2019
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Satoshi Yanobe
  • Patent number: 10211387
    Abstract: Provided is a method for controlling an ultrasonic motor to reduce noise sounding during low-speed rotation in a surveying instrument adopting the ultrasonic motor for a rotary shaft, and a surveying instrument for the same. In a method for controlling an ultrasonic motor according to an aspect of the present invention, in a low-speed rotation range of an ultrasonic motor, a ratio of an acceleration period as a time of application of the drive signal in a control cycle is controlled, and a time to start the acceleration period is randomly shifted for each control cycle. In a method for controlling an ultrasonic motor according to another aspect, a time to start the acceleration period is regularly shifted for each control cycle. In a method for controlling an ultrasonic motor according to still another aspect, second-half acceleration control and first-half acceleration control are alternately repeated.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: February 19, 2019
    Assignee: TOPCON CORPORATION
    Inventors: Kaoru Kumagai, Satoshi Yanobe, Tetsutaro Kouji
  • Patent number: 10185026
    Abstract: The invention provides a measuring instrument, which comprises a light emitting element, a distance measuring light projecting unit, a light receiving unit, a distance measuring unit for performing a distance measurement, a first optical axis deflecting unit for deflecting an optical axis of a distance measuring light, a second optical axis deflecting unit for deflecting a reflected distance measuring light, a projecting direction detecting unit for detecting a deflection angle and a deflecting direction, and a control unit, wherein the distance measuring light is projected through the first optical axis deflecting unit, the reflected distance measuring light is received by a light receiving element through the second optical axis deflecting unit, and the control unit acquires three-dimensional data of a measuring point based on a result of the distance measurement of the distance measuring unit and on a detection result of the projecting direction detecting unit.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: January 22, 2019
    Assignee: TOPCON Corporation
    Inventors: Kaoru Kumagai, Fumio Ohtomo
  • Publication number: 20190017929
    Abstract: To provide a method of measuring a state of concrete capable of easily determining or measuring deterioration of the concrete without using a spectroscopy while maintaining the estimation accuracy. The method of the present disclosure emits an irradiation light to the concrete, the irradiation light including a wavelength range of near infrared light related to concrete measurement; and receives a reflection light of the irradiation light P reflected on the concrete. The method determines 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, and estimates a degree of neutralization of the concrete caused by calcium hydroxide and a concentration of chloride ion.
    Type: Application
    Filed: December 21, 2016
    Publication date: January 17, 2019
    Inventors: Kaoru KUMAGAI, Shugo AKIYAMA, Issei HANYA, Peng ZHAO, Masashi FUNAHASHI, Yoshimitsu NAKAJIMA, Yuji SHIRANE
  • Publication number: 20190011536
    Abstract: A laser scanner comprising a distance measuring light projecting unit for emitting at least two distance measuring lights at a known deflection angle with respect to a projecting optical axis, a distance measuring unit for receiving at least two reflected distance measuring lights and performing a distance measurement, respectively, an optical axis deflector for deflecting optical axes of the distance measuring lights and the reflected distance measuring lights at the same deflection angle in the same direction, a projecting direction detecting module for deflecting a deflection angle and a deflecting direction by the optical axis deflector, and an arithmetic control module, wherein the arithmetic control module performs a two-dimensional scanning with the distance measuring lights, draws at least two loci on a plane to be measured, and measures the plane to be measured along at least the two loci substantially at the same time by the distance measuring unit.
    Type: Application
    Filed: June 19, 2018
    Publication date: January 10, 2019
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Publication number: 20180372492
    Abstract: The invention provides a surveying instrument, which comprises a light emitting element for emitting a distance measuring light, a distance measuring light projecting unit for projecting the distance measuring light, a light receiving unit for receiving a reflected distance measuring light, a photodetection element for receiving the reflected distance measuring light and for producing a photodetection signal and a distance measuring unit for performing a distance measurement based on a light receiving result from the photodetection element, further comprises a first optical axis deflecting unit disposed on a projection optical axis of the distance measuring light for deflecting an optical axis of the distance measuring light at a deflection angle as required and in a direction as required, a second optical axis deflecting unit disposed on a light receiving optical axis for deflecting the reflected distance measuring light at the same deflection angle and in the same direction as the first optical axis deflect
    Type: Application
    Filed: August 29, 2018
    Publication date: December 27, 2018
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Publication number: 20180328728
    Abstract: A deflecting device and surveying instrument comprising a holding member having a ring shape; ring gears disposed on both sides of the holding member with the holding member interposed the ring gears, the ring gears being concentric with the holding member; bearings disposed between the holding member and the ring gears on both sides of the holding member, the bearings being concentric with the holding member; optical deflecting members disposed at central portions of the ring gears and integrated with the ring gears; deflection motors corresponding to the respective ring gears; and a drive transmitting member configured to transmit rotary force of the deflection motors to the ring gears.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 15, 2018
    Applicant: TOPCON CORPORATION
    Inventors: Hideyuki MATSUMOTO, Fumio OHTOMO, Kaoru KUMAGAI
  • Publication number: 20180329040
    Abstract: A target instrument has an illuminating lamp, wherein a total station has an optical axis deflector capable of deflecting a distance measuring optical axis, a projecting direction detecting module for performing an angle measurement of the distance measuring optical axis, an image pickup unit, and an arithmetic control module for controlling a deflecting action of the optical axis deflector and a distance measuring action of a distance measuring unit, wherein the arithmetic control module is configured to detect an illumination light from an image acquired by the image pickup unit, to acquire a direction of the illuminating lamp based on a detection result, to make the optical axis deflector to scan with a distance measuring light around the acquired direction and to perform a distance measurement and an angle measurement along a scanning path.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 15, 2018
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Tetsuji Anai