Patents Assigned to Topcon Corporation
  • Publication number: 20220248953
    Abstract: A slit lamp microscope of an aspect example includes a scanner, a controller, and an image set creation processor. The scanner is configured to scan an anterior segment of a subject's eye with slit light to collect an image group. The controller is configured to control the scanner to apply two or more scans to the anterior segment. The image set creation processor is configured to create an image set by selecting a series of images corresponding to a scan area from two or more image groups collected by the scanner in the two or more scans.
    Type: Application
    Filed: June 1, 2020
    Publication date: August 11, 2022
    Applicant: Topcon Corporation
    Inventors: Hitoshi SHIMIZU, Kazuhiro OMORI, Hisashi TSUKADA
  • Publication number: 20220254107
    Abstract: The data set receiving unit 13 of the information processing apparatus 1 of an aspect example receives a data set that includes at least BIM data. The route setting processor 151 sets a route, which is arranged inside and/or outside a virtual building represented by the BIM data, based on the data set received. The virtual image set generating processor 152 generates a virtual image set of the virtual building along the route, based on the received data set and the set route. The inference model creating processor 153 creates an inference model by applying machine learning with training data that includes at least the generated virtual image set to a neural network. The inference model created is used to identify data of a building material from data acquired by measuring a building.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 11, 2022
    Applicant: Topcon Corporation
    Inventors: Yasufumi FUKUMA, Satoshi YANOBE
  • Publication number: 20220248947
    Abstract: Provided are an ophthalmologic device and a method of controlling the same capable of accurately and reliably acquiring ocular characteristics of a subject eye. The ophthalmologic device includes: a face supporting unit configured to support a face of an examinee; an anterior ocular segment image acquiring unit configured to repeatedly acquire an anterior ocular segment image of the subject eye of the face supported by the face supporting unit; a pupil image detecting unit configured to detect a pupil image of the subject eye for each anterior ocular segment image based on the anterior ocular segment image repeatedly acquired by the anterior ocular segment image acquiring unit; and a determining unit configured to determine whether or not the face is properly supported by the face supporting unit based on a result of detection of the pupil image for each anterior ocular segment image by the pupil image detecting unit.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 11, 2022
    Applicant: Topcon Corporation
    Inventors: Takaaki SHIRATORI, Takuya OKI, Hiroyuki AOKI, Yusuke ONO
  • Publication number: 20220248950
    Abstract: An ophthalmologic apparatus includes: an objective lens 18 configured to face a subject's eye E; an illumination optical system 1c configured to irradiate the subject's eye E with illumination light L1; a measurement optical system 1 b configured to take an interference image of corneal reflection light R1, which is a reflection of the illumination light L1, through the objective lens 18; an observation optical system 1a configured to image an anterior segment of the subject's eye E through the objective lens 18; a control unit 2 configured to process information on imaging by the measurement optical system 1b and the observation optical system 1 a; and the control unit 2 configured to simultaneously output, to a single output unit 3, tear film information calculated from the interference image by the measurement optical system 1 b, and information on the anterior segment E imaged by the observation optical system 1a.
    Type: Application
    Filed: June 10, 2020
    Publication date: August 11, 2022
    Applicant: Topcon Corporation
    Inventors: Zhenguo WANG, Zaixing MAO, Jongsik KIM, Bin CAO, Makoto FUJINO, Kazuhiro OOMORI, Eiichi YANAGI, Ying DONG, Song MEI, Kinpui CHAN
  • Patent number: 11402204
    Abstract: Provided is a surveying instrument including a measuring unit including a tilt sensor configured to acquire tilt angle data of the instrument, and an environment sensor to acquire environment data correlating with a leveling time and leveling accuracy, a leveling unit including a leveling drive unit and configured to level the instrument, an arithmetic control unit configured to control the measuring unit and the leveling unit, and a storage unit configured to store the environment data, leveling result data of the leveling unit, and information on leveling operation conditions. The storage unit has surveying instrument-specific information.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: August 2, 2022
    Assignee: TOPCON CORPORATION
    Inventor: Daisuke Ito
  • Patent number: 11402206
    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: Grant
    Filed: September 16, 2019
    Date of Patent: August 2, 2022
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Ikuo Ishinabe, Kaoru Kumagai
  • Patent number: 11402506
    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: Grant
    Filed: September 17, 2018
    Date of Patent: August 2, 2022
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Kaoru Kumagai, Ken-ichiro Yoshino
  • Patent number: 11402207
    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: Grant
    Filed: December 11, 2018
    Date of Patent: August 2, 2022
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Tetsuji Anai, Kaoru Kumagai
  • Patent number: 11403826
    Abstract: A management system includes a measuring device including a communication unit and a coordinate measuring unit, an eyewear device including a communication unit, a display, a relative position detection sensor, and a relative direction detection sensor, a storage unit configured to store CAD design data of a management site, and an arithmetic processing unit including a synchronous measuring unit configured to synchronize coordinate spaces of the measuring device, the eyewear device, and the CAD design data, wherein the synchronous measuring unit acquires information of a wire frame viewed from a point at the position in the direction of the eyewear device from the CAD design data, and the eyewear device displays the information of the wire frame that the eyewear device received on the display by superimposing the information on an actual construction product.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: August 2, 2022
    Assignee: TOPCON CORPORATION
    Inventor: Takeshi Kikuchi
  • Patent number: 11395585
    Abstract: An ophthalmologic apparatus includes an input portion configured to receive an ID that identifies at least one of an examiner or a subject; a storage portion configured to store examiner data with regard to a rotational position of a supporting arm member (support portion) about a vertical axis and a horizontal axis, the examiner data being predetermined to correspond to the ID; and a drive control portion configured to select the examiner data stored in the storage portion based on the ID received by the input portion, and to control a drive portion based on the examiner data and a detection result of the position detection portion so that the rotational position of the supporting arm member about the vertical axis and the horizontal axis coincides with a predetermined rotational position.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 26, 2022
    Assignee: TOPCON CORPORATION
    Inventor: Naoki Inuzuka
  • Patent number: 11393169
    Abstract: The data set receiving unit 13 of the information processing apparatus 1 of an aspect example receives a data set that includes at least BIM data. The route setting processor 151 sets a route, which is arranged inside and/or outside a virtual building represented by the BIM data, based on the data set received. The virtual image set generating processor 152 generates a virtual image set of the virtual building along the route, based on the received data set and the set route. The inference model creating processor 153 creates an inference model by applying machine learning with training data that includes at least the generated virtual image set to a neural network. The inference model created is used to identify data of a building material from data acquired by measuring a building.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: July 19, 2022
    Assignee: TOPCON CORPORATION
    Inventors: Yasufumi Fukuma, Satoshi Yanobe
  • Patent number: 11385052
    Abstract: There is provided a surveying instrument including a tripod which is installed on an installation surface and a surveying instrument main body which is provided on the tripod and laterally rotatable around a longitudinal axis, wherein the tripod includes a reference leg has a known relationship between a lower end of the reference leg and a machine reference point which is a machine center of the surveying instrument main body, and two auxiliary legs, the reference leg is installed in such a manner that a lower end of the reference leg coincides with a reference point, wherein the surveying instrument main body calculates a position of the machine reference point with respect to the reference point based on the positional relationship between the lower end of the reference leg and the machine reference point.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: July 12, 2022
    Assignee: TOPCON Corporation
    Inventors: Nobuyuki Nishita, Fumio Ohtomo
  • Patent number: 11382498
    Abstract: An ophthalmologic apparatus includes a measurement optical system to acquire information of an eye, an image obtaining part to obtain an anterior ocular segment image of the eye on an optical axis of the measurement optical system, a display to display the anterior ocular segment image, cameras to each capture an image of an anterior ocular segment of the eye from a different direction, a driving mechanism to move the measurement optical system in a vertical direction and a horizontal direction, and a controller. The controller is configured to acquire three-dimensional position information of the eye based on the images captured by the cameras and calculate moving amounts in the vertical and horizontal directions of the measurement optical system based on the three-dimensional position information. The controller is configured to display the anterior ocular segment image on the display while positioning the measurement optical system with the driving mechanism.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: July 12, 2022
    Assignee: TOPCON CORPORATION
    Inventor: Kazuo Kitamura
  • Patent number: 11385337
    Abstract: A method for calibrating unevenness of a plurality of measuring elements in an apparatus for evaluating road surface property having a plurality of measuring elements repeats steps of computing separation quantities from a calibration reference plane on a reference area regarding all measuring elements; determining a measuring element where the separation quantity is maximum from among all the measuring element to calibrate the measuring element such that a difference between point cloud data produced from a measurement value of the measuring element where the separation quantity is maximum and the calibration reference plane becomes equal or less than a predetermined value, producing a new calibration reference plane from the measurement values of the measuring elements including the calibrated measuring element, until RMS of point cloud data does not change.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: July 12, 2022
    Assignee: Topcon Corporation
    Inventors: You Sasaki, Tadayuki Ito
  • Patent number: 11375892
    Abstract: An exemplary aspect is a method of processing data acquired by applying an optical coherence tomography (OCT) scan to a sample. The method includes preparing a three dimensional data set acquired from a sample, creating a two dimensional map based on representative intensity values of a plurality of pieces of A-scan data included in the three dimensional data set, placing the three dimensional data set based on the two dimensional map, and executing a process based on at least a partial data set of the three dimensional data set on which placement based on the two dimensional map has been performed.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: July 5, 2022
    Assignee: TOPCON CORPORATION
    Inventors: Hisashi Tsukada, Atsushi Kubota, Yasufumi Fukuma
  • Publication number: 20220206164
    Abstract: An optical interference measurement device includes: a light source having a wavelength-swept light source that changes a wavelength of emitted light periodically; a light splitter configured to split light emitted from the light source into measurement light and reference light; a measurement section configured to emit the measurement light onto a measurement target; an interference section configured to couple the measurement light reflected or scattered by the measurement target and the reference light together to produce interfering light; a light detector configured to detect the interfering light; and an analyzer configured to analyze an interference signal detected by the light detector. The optical interference measurement device has an optical element in the measurement section, and the optical element is configured to cause an optical loss that makes an amount of light received inversely proportional to a square of a propagation distance.
    Type: Application
    Filed: December 18, 2021
    Publication date: June 30, 2022
    Applicant: Topcon Corporation
    Inventor: Akira TAKADA
  • Publication number: 20220192488
    Abstract: An ophthalmic apparatus includes an illumination optical system, an imaging optical system, and a controller. The illumination optical system is configured to generate illumination light using light from a light source, and to illuminate a changeable illumination region on a predetermined site of a subject's eye with the illumination light having a light intensity corresponding to a size of the illumination region. The imaging optical system is configured to guide returning light of the illumination light from the subject's eye to a light receiving surface of an image sensor. The controller is configured to control the image sensor to set an opening range so as to overlap an illumination range of the returning light on the light receiving surface corresponding to the illumination region and to capture a light receiving result obtained by a light receiving element in the set opening range.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Applicant: Topcon Corporation
    Inventors: Toshihiro MINO, Jongsik KIM, Dawei LI, Zhenguo WANG, Kinpui CHAN
  • Patent number: 11363948
    Abstract: An ophthalmologic device includes: a visual target presenting unit configured to present a common visual target to be viewed with both subject's eyes; a presenting distance changing unit configured to change a presenting distance of the visual target presented by the visual target presenting unit from a predetermined far vision distance to a predetermined near vision distance; an ocular characteristic acquiring unit configured to objectively acquire an optical characteristic of the subject's eyes; an addition power adding unit configured to add the addition power to the both subject's eyes; and a control unit configured to cause the presenting distance changing unit to change the presenting distance and the ocular characteristic acquiring unit to continuously acquire the optical characteristic, in a state in which an addition power is added to the both subject's eyes by the addition power adding unit.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: June 21, 2022
    Assignees: OSAKA UNIVERSITY, TOPCON CORPORATION
    Inventors: Takashi Fujikado, Yoko Hirohara, Makoto Saika, Suguru Miyagawa
  • Patent number: 11361481
    Abstract: Shadows caused by opacities and obstructions (such as blood vessels) can block detection of structural information of objects below the shadow-causing structure, affecting visualization and analysis of those deeper structures. An image processing method for removing these shadows includes applying a low pass filter to an energy profile of an image to remove high frequency fluctuations in energy, thereby effectively recovering lower energy inside shadow regions and removing high frequency speckle. The image is then adjusted, for example by linear scaling, based on the filtered energy profile. Two dimensional filters may also be applied for volumes.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: June 14, 2022
    Assignee: TOPCON CORPORATION
    Inventors: Song Mei, Zaixing Mao, Ying Dong, Zhenguo Wang, Kinpui Chan
  • Publication number: 20220175247
    Abstract: An ophthalmologic apparatus includes: an objective lens that faces a subject's eye; an alignment light emitting unit that irradiates the subject's eye with alignment light to perform measurement of alignment between the objective lens and the subject's eye; an alignment reflection light receiving unit that receives alignment reflection light, which is a reflection of the alignment light from the subject's eye; an anterior segment camera that receives corneal reflection light; and a holder positioned between the anterior segment camera and the objective lens to hold the anterior segment camera, wherein the holder includes an imaging transmissive portion that transmits the corneal reflection light to the anterior segment camera, a first light-transmissive portion that transmits the alignment light from the alignment light emitting unit, and a second light-transmissive portion that transmits the alignment reflection light from the subject's eye.
    Type: Application
    Filed: April 24, 2020
    Publication date: June 9, 2022
    Applicant: Topcon Corporation
    Inventors: Zhenguo WANG, Zaixing MAO, Kazuhiro OOMORI, Makoto FUJINO