Patents by Inventor Gyokubu Cho

Gyokubu Cho 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: 10102631
    Abstract: A distance in a scanning direction between a first set of edges which face each other and exhibit an opposite change between light and dark is measured by an image measuring machine, and a bias correction value is calculated based on a difference between a measured value and a true value. Using the bias correction value, detection point correction values, which are correction values in various directions of edge detection points detected by a scan of a measured object using the image measuring machine, are calculated; a correction amount used in correction of the edge detection points is specified based on the detection point correction value in each direction; and the edge detection points are corrected using the correction amount.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: October 16, 2018
    Assignee: MITUTOYO CORPORATION
    Inventors: Hiroyuki Yoshida, Akira Takada, Makoto Kaieda, Gyokubu Cho, Koichi Komatsu, Hidemitsu Asano, Takashi Hanamura, Takuho Maeda, Isao Tokuhara
  • Patent number: 10027885
    Abstract: An image measuring apparatus is configured such that an image of a measured object placed on a stage is captured by a camera, the captured image is displayed on, a captured image display screen, and determination results based on results of a measurement are displayed in an overview list separately from the captured image of the measured object. The image measuring apparatus includes an individual determination results display region displaying individual determination results for each measurement position; and an overall determination results display region displaying overall determination results for the measured object as a unit. The image measuring apparatus is configured to display the individual determination results and the overall determination results together.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: July 17, 2018
    Assignee: MITUTOYO CORPORATION
    Inventors: Gyokubu Cho, Akira Takada, Takashi Hanamura, Takuho Maeda
  • Publication number: 20170285318
    Abstract: An imaging system includes: an image forming device that obtains image information of an object with the focal length to the object being changed by a variable focal length lens in an optical system, so as to form an all-focused image of the object; a sensor device that detects variations in the surface level of the object in a focus direction; and a position adjustment device that adjusts the position of the object in the focus direction in accordance with the surface level variations of the object detected by the sensor device. The position adjustment device adjusts the position of the object in the focus direction in such a manner that the surface level of the object becomes closer to the center of a variable focal length range of the variable focal length lens.
    Type: Application
    Filed: March 10, 2017
    Publication date: October 5, 2017
    Applicant: MITUTOYO CORPORATION
    Inventors: Gyokubu CHO, Tatsuya NAGAHAMA, Takahisa OOTAKE, Kazuki KITAGAWA
  • Patent number: 9726473
    Abstract: A light interference measuring device comprises: a light source 20 that outputs light; a beam splitter 222 that causes the light output from the light source to diverge into a reference optical path and a measurement optical path and that outputs a combined wave in which reflection light that has passed through the reference optical path and reflection light that has passed through a measuring object arranged in the measurement optical path are combined; a reference mirror 231 that is arranged in the reference optical path and that reflects light which is diverged into the reference optical path by the beam splitter 222; a stage 12 that is arranged in the measurement optical path and that has the work W placed thereon; an imaging part 25 that images an image in which the combined wave is formed; a reference mirror adjustment mechanism (234, 238, 239) that adjusts a posture of the reference mirror 231; and a control part that controls the reference mirror adjustment mechanism such that a reflecting surface of
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: August 8, 2017
    Assignee: MITUTOYO CORPORATION
    Inventors: Kenji Okabe, Gyokubu Cho, Tatsuya Nagahama
  • Publication number: 20170178315
    Abstract: An image measuring method performed with an image measuring device measuring a dimension of a measured object from an image of the measured object captured by an image capturer. The method executes a standard reference object measurement measuring a dimension of the standard reference object with the image measuring device; a standard reference dimension input inputting a dimension of the standard reference object specified by a device other than the image measuring device; a preset value calculation calculating a preset value from the dimension of the measured standard reference object and from a dimension of the standard reference object measured by a predetermined measurement tool; a measurement measuring a dimension of a measured object other than the standard reference object using the image measuring device; and a correction correcting the dimension of the measured object other than the standard reference object measured by the image measuring device.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 22, 2017
    Applicant: MITUTOYO CORPORATION
    Inventors: Gyokubu CHO, Koichi KOMATSU, Akira TAKADA, Hiroyuki YOSHIDA, Takashi HANAMURA, Takuho MAEDA, Makoto KAIEDA, Isao TOKUHARA
  • Publication number: 20160375640
    Abstract: A 3D printer includes: an object-forming unit for forming an object by laminating an object material at an object-forming point based on a design data; an image capturing unit for capturing an image of the object formed by the object-forming unit; and a shape measurement unit for measuring a cross section of the object based on the image captured by the image capturing unit while the object is under formation by the object-forming unit.
    Type: Application
    Filed: June 21, 2016
    Publication date: December 29, 2016
    Applicant: MITUTOYO CORPORATION
    Inventors: Gyokubu CHO, Hidemitsu ASANO, Masato KON
  • Publication number: 20160295207
    Abstract: A distance in a scanning direction between a first set of edges which face each other and exhibit an opposite change between light and dark is measured by an image measuring machine, and a bias correction value is calculated based on a difference between a measured value and a true value. Using the bias correction value, detection point correction values, which are correction values in various directions of edge detection points detected by a scan of a measured object using the image measuring machine, are calculated; a correction amount used in correction of the edge detection points is specified based on the detection point correction value in each direction; and the edge detection points are corrected using the correction amount.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 6, 2016
    Applicant: MITUTOYO CORPORATION
    Inventors: Hiroyuki YOSHIDA, Akira TAKADA, Makoto KAIEDA, Gyokubu CHO, Koichi KOMATSU, Hidemitsu ASANO, Takashi HANAMURA, Takuho MAEDA, Isao TOKUHARA
  • Publication number: 20160021306
    Abstract: An image measuring apparatus is configured such that an image of a measured object placed on a stage is captured by a camera, the captured image is displayed on, a captured image display screen, and determination results based on results of a measurement are displayed in an overview list separately from the captured image of the measured object. The image measuring apparatus includes an individual determination results display region displaying individual determination results for each measurement position; and an overall determination results display region displaying overall determination results for the measured object as a unit. The image measuring apparatus is configured to display the individual determination results and the overall determination results together.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 21, 2016
    Applicant: MITUTOYO CORPORATION
    Inventors: Gyokubu CHO, Akira TAKADA, Takashi HANAMURA, Takuho MAEDA
  • Publication number: 20160019687
    Abstract: An image measuring apparatus is configured such that an image of a measured object placed on a stage is captured by a camera, the captured image is displayed on a captured image display screen, and determination results based on results of a measurement are displayed in an overview list separately from the captured image of the measured object. The image measuring apparatus includes a selector selecting measurement results that include determination results on the list; and an emphasis displayer providing an emphasis display on the captured image display screen for a measurement position corresponding to the selected measurement results.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 21, 2016
    Applicant: MITUTOYO CORPORATION
    Inventors: Gyokubu CHO, Akira TAKADA, Takashi HANAMURA, Takuho MAEDA
  • Publication number: 20150176967
    Abstract: A light interference measuring device comprises: a light source 20 that outputs light; a beam splitter 222 that causes the light output from the light source to diverge into a reference optical path and a measurement optical path and that outputs a combined wave in which reflection light that has passed through the reference optical path and reflection light that has passed through a measuring object arranged in the measurement optical path are combined; a reference mirror 231 that is arranged in the reference optical path and that reflects light which is diverged into the reference optical path by the beam splitter 222; a stage 12 that is arranged in the measurement optical path and that has the work W placed thereon; an imaging part 25 that images an image in which the combined wave is formed; a reference mirror adjustment mechanism (234, 238, 239) that adjusts a posture of the reference mirror 231; and a control part that controls the reference mirror adjustment mechanism such that a reflecting surface of
    Type: Application
    Filed: December 15, 2014
    Publication date: June 25, 2015
    Inventors: Kenji Okabe, Gyokubu Cho, Tatsuya Nagahama
  • Patent number: 8957960
    Abstract: A machine vision system program editing environment includes near real time context generation. Rather than requiring execution of all preceding instructions of a part program in order to generate a realistic context for subsequent edits, surrogate data operations using previously saved data replace execution of certain sets of instructions. The surrogate data may be saved during the actual execution of operations that are recorded in a part program. An edit mode of execution substitutes that data as a surrogate for executing the operations that would otherwise generate that data. Significant time savings may be achieved for context generation, such that editing occurs within an operating context which may be repeatedly refreshed for accuracy in near real time. This supports convenient program modification by relatively unskilled users, using the native user interface of the machine vision system, rather than difficult to use text-based or graphical object-based editing environments.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: February 17, 2015
    Assignee: Mitutoyo Corporation
    Inventors: Barry Saylor, Dahai Yu, Ryan Northrup, Gyokubu Cho, Akira Takada
  • Publication number: 20130123945
    Abstract: A machine vision system program editing environment includes near real time context generation. Rather than requiring execution of all preceding instructions of a part program in order to generate a realistic context for subsequent edits, surrogate data operations using previously saved data replace execution of certain sets of instructions. The surrogate data may be saved during the actual execution of operations that are recorded in a part program. An edit mode of execution substitutes that data as a surrogate for executing the operations that would otherwise generate that data. Significant time savings may be achieved for context generation, such that editing occurs within an operating context which may be repeatedly refreshed for accuracy in near real time. This supports convenient program modification by relatively unskilled users, using the native user interface of the machine vision system, rather than difficult to use text-based or graphical object-based editing environments.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 16, 2013
    Applicant: MITUTOYO CORPORATION
    Inventors: Barry Saylor, Dahai Yu, Ryan Northrup, Gyokubu Cho, Akira Takada
  • Publication number: 20090303068
    Abstract: An optical measuring instrument captures an image of an object to be measured mounted on a table by moving an objective lens relative to the table and measures a dimension of the object based on the captured image of the object. The optical measuring instrument includes a reflective photoelectric sensor provided around the objective lens for detecting the approach of the object to the objective lens, and a collision avoidance unit for avoiding collision of the objective lens with the object when the reflective photoelectric sensor detects the approach of the objective lens to the object.
    Type: Application
    Filed: May 15, 2009
    Publication date: December 10, 2009
    Applicant: MITUTOYO CORPORATION
    Inventors: Masanori Arai, Gyokubu Cho, Tatsuya Nagahama