Patents Assigned to Keyence Corporation
  • Patent number: 10739130
    Abstract: Provided is a measuring device that can easily perform high-accuracy measurement at low cost. A stage is held on an installation part. A head unit including a light projecting unit and a light receiving unit, and the installation part are fixedly coupled together by a stand. A light shielding mechanism is attached to the stand in order to block ambient light. The light shielding mechanism includes a front cover member that covers a space on the stage from above. Point cloud data representing the three-dimensional shape of the measuring object is generated based on the light reception signal. Designation of a point to be measured in the measuring object is received, and a measurement value at the designated point is calculated based on the obtained point cloud data.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 11, 2020
    Assignee: KEYENCE CORPORATION
    Inventors: Shigeto Murakami, Masaki Fujiwara, Takashi Nakatsukasa
  • Patent number: 10739126
    Abstract: To provide a three-dimensional coordinate measuring device capable of measuring coordinates over a wide, range with high accuracy and high reliability. A reference stand 10 is provided on an installation surface. A reference camera 110 is fixed to the reference stand 10. A movable camera 120 and a reference member 190 having plurality of markers are rotatably supported on the reference stand 10. The reference camera 110, the movable camera 120, and the reference member 190 are accommodated in a casing 90. The movable camera 120 captures a probe that makes contact with a measurement target and the reference camera 110 captures the plurality of markers of the reference member 190. The coordinates of a point at which the probe makes contact with the measurement target are calculated based on the image data obtained by the capturing.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 11, 2020
    Assignee: KEYENCE CORPORATION
    Inventor: Masayasu Ikebuchi
  • Publication number: 20200250801
    Abstract: To suppress erroneous input in inputting a non-defective product image and a defective product image, thereby increasing accuracy of distinguishing between a non-defective product image and a defective product image. An additional image that is added with an attribute as either one of a non-defective product and a defective product by a user is plotted in a feature space, and the probability that the attribute of the additional image is wrong is estimated. In the case in which the additional image is expected to have a wrong attribute, this result is notified. Result of selection whether to correct the attribute of the additional image by a user who receives the notification is received. A classifier generator 22 determines the attribute of the additional image on the basis of the result of selection and corrects a classification boundary in accordance with the determined attribute.
    Type: Application
    Filed: December 30, 2019
    Publication date: August 6, 2020
    Applicant: Keyence Corporation
    Inventor: Di HE
  • Patent number: 10732018
    Abstract: To provide a clamp-on type ultrasonic flow sensor capable of preventing deterioration in measurement accuracy of a flow rate due to deformation of a pipe. Elastic couplants CP1 and CP2 formed to surround the outer circumferential surface of a pipe are fixed while being pressed on the pipe P by fixing inner surfaces FS of two clamp members 131 and 132. An ultrasonic wave is propagated through the elastic couplants CP1 and CP2 and fluid in the pipe between a first ultrasonic element 101 and a second ultrasonic element 102. A cross section of the fixing inner surfaces FS of the clamp members 131 and 132 has a shape of a regular even-numbered polygonal shape centering on the axis of the pipe.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: August 4, 2020
    Assignee: KEYENCE CORPORATION
    Inventors: Shinichi Tsukigi, Yasunori Kawaguchi
  • Patent number: 10724850
    Abstract: To enable measurement of a displacement at a predetermined position in the case in which a measurement object remains stationary and also in the case in which the measurement object moves. A light projector and a scanning part are controlled to cause measurement light to sequentially irradiate different positions of the measurement object in a case in which a scanning mode is selected. On the other hand, the light projector and the scanning part are controlled to cause the measurement light to irradiate the same positions of the measurement object in a case in which a line mode is selected. The displacement of the measurement object is measured on the basis of a received-light quantity distribution output from a light receiver.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: July 28, 2020
    Assignee: Keyence Corporation
    Inventor: Kaoru Fujiwara
  • Patent number: 10724849
    Abstract: To enable measuring a displacement at a predetermined position of a measurement object for a short time at a high accuracy. While a scanning mirror is moved in a first scanning range to cause measurement light to irradiate a measurement position, a first irradiation angle of the scanning mirror at the time the measurement light is emitted to the measurement position is obtained. While a scanning mirror is moved in a second scanning range that covers the first irradiation angle and that is narrower than the first scanning range, and a second irradiation angle at the time the measurement light is emitted to the measurement position is obtained. A light receiver outputs a received-light quantity distribution, and a displacement at the measurement position is measured on the basis of the second irradiation angle and the position in a second direction of the measurement position.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: July 28, 2020
    Assignee: Keyence Corporation
    Inventor: Masakazu Nishiki
  • Patent number: 10704899
    Abstract: A shape measuring device includes a stereoscopic-shape-data generating section 212 configured to generate stereoscopic shape data indicating a shape of the measurement object with a pattern projection method, a measurement-setting automatically adjusting section 217 configured to automatically adjust measurement setting for the partial regions on the basis of at least one of stereoscopic shape data of the partial regions and light reception data acquired in the partial regions when the stereoscopic shape data is generated, and a stereoscopic-shape-data coupling section 219 configured to couple, according to the measurement setting for the partial regions adjusted by a measurement setting adjusting section, the stereoscopic shape data of the partial regions generated again by the stereoscopic-shape-data generating section 212 and generate coupled stereoscopic shape data corresponding to the coupled region.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: July 7, 2020
    Assignee: KEYENCE CORPORATION
    Inventor: Shinya Takahashi
  • Publication number: 20200209522
    Abstract: A laser processing apparatus includes a laser light output section, a first scanner and a second scanner, a distance measurement light emitting section, a reference member which is arranged at a position which is the other end of a correction optical path formed with the distance measurement light emitting section as one end of the correction optical path and is arranged such that an optical path length of the correction optical path is a predetermined reference distance, a distance measurement light receiving section which receives distance measurement light reflected by the workpiece or the reference member, a distance measuring section which measures a distance to the workpiece or the reference member, and a distance correcting section which compares a measurement result of the distance to the reference member with the reference distance stored in advance to correct the measurement result obtained by the distance measuring section.
    Type: Application
    Filed: November 25, 2019
    Publication date: July 2, 2020
    Applicant: Keyence Corporation
    Inventors: Hideki YAMAKAWA, Kazuma NEHASHI, Yu TAKABATAKE
  • Publication number: 20200209027
    Abstract: To provide an apparatus for monitoring a fluid flow rate, which is capable of performing monitoring without a data deficit, and displays information on a trend of a past history. A monitoring apparatus accepts, from the flow meter, integrated flow amount data for every day-and-time section, and a current flow rate, and graphically displays, on the basis of the integrated flow amount data for every day-and-time section, an integrated flow amount corresponding to each day-and-time section, on the basis of the integrated flow amount data for every day-and-time section including the current day-and-time and for every another plurality of continuous day-and-time sections.
    Type: Application
    Filed: September 18, 2019
    Publication date: July 2, 2020
    Applicant: Keyence Corporation
    Inventor: Kentaro YAMAZAKI
  • Publication number: 20200209026
    Abstract: In a temporally continued plurality of day-and-time sections, history data included in the past day-and-time section is graphically displayed on the basis of the integrated flow amount data stored in the storage unit, as an integrated flow amount in each day-and-time section. In the day-and-time section including the current day-and-time, the integrated flow amount in the day-and-time section based on the current integrated flow amount data is successively updated and graphically displayed.
    Type: Application
    Filed: September 18, 2019
    Publication date: July 2, 2020
    Applicant: Keyence Corporation
    Inventors: Yohei HASHIMOTO, Kentaro YAMAZAKI
  • Publication number: 20200209523
    Abstract: A laser processing apparatus includes a laser light output section, a laser light scanning section, a distance measurement light emitting section which emits distance measurement light, a pair of light receiving elements which receives the distance measurement light emitted from the distance measurement light emitting section and reflected by the workpiece, optical axes of the pair of light receiving elements being arranged inside the housing so as to sandwich an optical axis of the distance measurement light emitting section, a distance measuring section which measures a distance to the surface of the workpiece, and a light receiving lens which is arranged such that each of the optical axes of the pair of light receiving elements passes through the light receiving lens, and condenses the distance measurement light that has been reflected by the workpiece on respective light receiving surfaces of the pair of light receiving elements.
    Type: Application
    Filed: November 25, 2019
    Publication date: July 2, 2020
    Applicant: Keyence Corporation
    Inventors: Kazuma NEHASHI, Hideki YAMAKAWA, Kosuke MATANO
  • Publication number: 20200209028
    Abstract: A clamp-on type ultrasonic flowmeter which is detachably attached to an outer wall of cylindrical piping is provided. An ultrasonic signal is transmitted to the piping from one of the first and the second ultrasonic devices, a plate wave corresponding to the ultrasonic signal is generated, and an ultrasonic signal corresponding to the plate wave is received by the other ultrasonic device. A pipe wall thickness of the piping and a frequency of the ultrasonic signal are in a state in which a plate wave of a low order asymmetric mode is significantly excited in the piping. A flow rate is calculated corresponding to phase velocity characteristics of the low order asymmetric mode.
    Type: Application
    Filed: September 18, 2019
    Publication date: July 2, 2020
    Applicant: Keyence Corporation
    Inventors: Hiroki MATSUI, Masaki WADA
  • Patent number: 10677584
    Abstract: To enable short-time measurement of a displacement at a predetermined position of a measurement object even when the position or the posture of the measurement object is changed. During operation of a displacement measuring apparatus, the position and the posture of a measurement object are determined by using position correction information, and a measurement position is corrected. The corrected measurement position is irradiated with measurement light. The measurement light that is emitted to and is reflected back from the measurement position is received by a light receiver. The light receiver outputs a received-light quantity distribution for displacement measurement, and a displacement at the measurement position is measured on the basis of the received-light quantity distribution.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: June 9, 2020
    Assignee: KEYENCE CORPORATION
    Inventor: Kaoru Fujiwara
  • Publication number: 20200174240
    Abstract: A magnifying observation apparatus obtains a plurality of first luminance images by controlling an illumination section so as to illuminate an observation target with illumination light from a first illumination direction and controlling a change section and an imaging section so as to image the observation target, obtains a plurality of second luminance images by controlling the illumination section so as to illuminate the observation target with illumination light from a second illumination direction symmetric with the first illumination direction about an optical axis and controlling the change section and the imaging section so as to image the observation target in a plurality of different focal positions, and generates a roughness enhancement image that enhances roughness on the surface of the observation target by applying depth synthesis and roughness enhancement.
    Type: Application
    Filed: October 8, 2019
    Publication date: June 4, 2020
    Applicant: Keyence Corporation
    Inventors: Woobum KANG, Hayato OHBA
  • Publication number: 20200160014
    Abstract: The optical code reader includes a light-receiving region limiting optical member 122. The light-receiving region limiting optical member 122 is disposed between a transparent window 8 and an image sensor 102 and includes an imaging lens 100 for imaging reflected light received through the transparent window 8, on a light receiving surface 108 of the image sensor 102. The light-receiving region limiting optical member 122 forms an image Im(1) of an optical code Co in a first light receiving region 108(1) of the light receiving surface 108 and forms an image Im(2) of an optical code Co in a second light receiving region 108 (2) that is different from the first light receiving region 108(1). The image sensor 102 is disposed obliquely to a direction orthogonal to an optical axis Oax of the imaging lens 100.
    Type: Application
    Filed: October 22, 2019
    Publication date: May 21, 2020
    Applicant: Keyence Corporation
    Inventors: Taichi TAJIKA, Hideaki MIYOSHI
  • Publication number: 20200149875
    Abstract: To enable scanning using measurement light with a small-sized displacement measuring apparatus. The displacement measuring apparatus includes a MEMS mirror for scanning using measurement light that is output from a light projection lens. The light projection lens has a focus position, at which the measurement light is condensed, at the MEMS mirror or in the vicinity of the MEMS mirror on an optical axis of the measurement light. The measurement light that is reflected at the MEMS mirror spreads in a strip-shaped manner as the measurement light comes close to a measurement region.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 14, 2020
    Applicant: Keyence Corporation
    Inventors: Noriyoshi YAMANE, Yuichiro HAMA
  • Publication number: 20200149874
    Abstract: To enable measurement of a displacement at a predetermined position in the case in which a measurement object remains stationary and also in the case in which the measurement object moves. Alight projector and a scanning part are controlled to cause measurement light to sequentially irradiate different positions of the measurement object in a case in which a scanning mode is selected. On the other hand, the light projector and the scanning part are controlled to cause the measurement light to irradiate the same positions of the measurement object in a case in which a line mode is selected. The displacement of the measurement object is measured on the basis of a received-light quantity distribution output from a light receiver.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 14, 2020
    Applicant: Keyence Corporation
    Inventor: Kaoru FUJIWARA
  • Publication number: 20200149872
    Abstract: To enable short-time measurement of a displacement at a predetermined position of a measurement object even when the position or the posture of the measurement object is changed. During operation of a displacement measuring apparatus, the position and the posture of a measurement object are determined by using position correction information, and a measurement position is corrected. The corrected measurement position is irradiated with measurement light. The measurement light that is emitted to and is reflected back from the measurement position is received by a light receiver. The light receiver outputs a received-light quantity distribution for displacement measurement, and a displacement at the measurement position is measured on the basis of the received-light quantity distribution.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 14, 2020
    Applicant: Keyence Corporation
    Inventor: Kaoru FUJIWARA
  • Publication number: 20200149873
    Abstract: To enable measuring a displacement at a predetermined position of a measurement object for a short time at a high accuracy. While a scanning mirror is moved in a first scanning range to cause measurement light to irradiate a measurement position, a first irradiation angle of the scanning mirror at the time the measurement light is emitted to the measurement position is obtained. While a scanning mirror is moved in a second scanning range that covers the first irradiation angle and that is narrower than the first scanning range, and a second irradiation angle at the time the measurement light is emitted to the measurement position is obtained. A light receiver outputs a received-light quantity distribution, and a displacement at the measurement position is measured on the basis of the second irradiation angle and the position in a second direction of the measurement position.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 14, 2020
    Applicant: Keyence Corporation
    Inventor: Masakazu NISHIKI
  • Publication number: 20200149880
    Abstract: A displacement measuring apparatus acquires, based on a principle of triangulation and corresponding to an incident position of the reflected light in the light receiving section, a profile that is an aggregate of heights of reflection positions of the planar measurement light in the measurement object. The displacement measuring apparatus drives the light guiding optical system such that a plurality of reflection positions arranged in a line along a first direction on a surface of the measurement object are minutely displaced in a second direction different from the first direction by reflecting the planar measurement light on the surface of the measurement object. The displacement measuring apparatus acquires one profile by statistically processing a plurality of sub-profiles acquired by minutely displacing the light guiding optical system.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 14, 2020
    Applicant: Keyence Corporation
    Inventor: Masakazu NISHIKI