Patents by Inventor Norimasa Satake

Norimasa Satake 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).

  • Publication number: 20220039650
    Abstract: A fundus imaging apparatus includes an OCT optical system for acquiring OCT data based on measurement light irradiated on a fundus of a subject eye and reference light, and a front imaging optical system for capturing a front image of the fundus of the subject eye by scanning light on the fundus. The scanning light scanned on the fundus of the subject eye in the front imaging optical system has a wavelength, which is longer than ?=850 nm, in a wavelength region in which a scanning light is unlikely to be visible for the subject eye.
    Type: Application
    Filed: August 2, 2021
    Publication date: February 10, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Shinya IWATA, Junpei NISHIYAMA, Norimasa SATAKE
  • Patent number: 11071452
    Abstract: The present disclosure relates to an optical coherence tomography (OCT) including: an OCT device, an OCT calculation method, and an OCT calculation program, enabling correlation between images to be easily performed; more specifically it relates to a case where a functional OCT image such as a motion contrast is acquired by using the OCT; acquiring the functional OCT image through a calculation process of an OCT signal is a time-consuming process, for this reason, a long time elapses until the point that a functional OCT image can be observed after OCT imaging is completed, and thus this causes stress to a subject and an examiner; the present disclosure provides an OCT device, an OCT calculation method, and an OCT calculation program, enabling a functional OCT image to be rapidly acquired and enables an examiner to easily perform diagnosis.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: July 27, 2021
    Assignee: NIDEK CO., LTD.
    Inventors: Norimasa Satake, Yukihiro Higuchi, Yuji Murase, Yasuhiro Furuuchi, Hajime Namiki, Naoki Isogai, Masaaki Hanebuchi, Naoki Takeno
  • Patent number: 10674909
    Abstract: An ophthalmic analysis apparatus for analyzing OCT motion contrast (MC) image data of a subject's eye acquired using an OCT apparatus for ophthalmology includes analysis process means for analyzing the OCT MC image data, in which the analysis process means generates OCT blood vessel change data including temporal change information in relation to a blood vessel region of the subject's eye based on first OCT MC image data and second OCT MC image data acquired at mutually different times.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: June 9, 2020
    Assignee: NIDEK CO., LTD.
    Inventors: Tetsuya Kano, Norimasa Satake, Yukihiro Higuchi, Yasuhiro Furuuchi
  • Patent number: 10582850
    Abstract: An OCT motion contrast data acquisition method using an optical coherence tomography device includes: controlling an optical scanner for scanning measurement light on a test subject; performing a first scanning control for obtaining a first OCT signal group including at least four temporally different OCT signals at a same scanning position; performing a second scanning control for obtaining a second OCT signal group including at least four temporally different OCT signals at the same scanning position; obtaining first motion contrast data based on the first OCT signal group obtained in the first scanning control; obtaining second motion contrast data based on the second OCT signal group obtained in the second scanning control; and obtaining third motion contrast data based on the first motion contrast data and the second motion contrast data.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: March 10, 2020
    Assignee: NIDEK CO., LTD.
    Inventors: Norimasa Satake, Yukihiro Higuchi
  • Patent number: 10492682
    Abstract: An ophthalmic analysis device for analyzing OCT motion contrast data including blood vessel information of a subject eye acquired by an ophthalmic OCT, includes: a processor; and memory storing computer readable program, when executed by the processor, causing the ophthalmic analysis device to execute: an analysis process of analyzing the OCT motion contrast data to acquire a measurement result related to a capillary area of the subject eye. The analysis process executes an alleviating process for alleviating the influence of great blood vessels having blood vessel diameters larger than those of capillaries on the measurement result to acquire the measurement result related to the capillary area.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: December 3, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Ryosuke Shiba, Norimasa Satake, Tetsuya Kano, Yasuhiro Furuuchi, Yuki Kuno, Ai Takaya, Naoki Takeno, Yukihiro Higuchi, Hajime Namiki
  • Patent number: 10285581
    Abstract: An ophthalmologic information processing apparatus for performing follow-up of a subject eye based on plural pieces of OCT data obtained at different dates includes: a processor; and memory storing computer readable instructions, when executed by the processor, causing the ophthalmologic information processing apparatus to execute: a first acquisition process of acquiring plural pieces of layer thickness information regarding a fundus, the plural pieces of layer thickness information being a processing result of the plural pieces of OCT data of the subject eye; a matching process of matching the pieces of layer thickness information based on the plural pieces of OCT data to each other in consideration of a difference in acquisition condition among the pieces of OCT data; and a display control process of displaying results of the matching of the pieces of layer thickness information on a monitor.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: May 14, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Hisanari Torii, Norimasa Satake
  • Patent number: 10251551
    Abstract: A fundus analysis device includes: a first database which stores layer thickness information of fundus relating to a plurality of eyes having respective long ocular axial lengths; a processor; and memory storing non-transitory computer readable instructions, when executed by the processor, causing the fundus analysis device to execute: an acquisition instruction of acquiring a tomographic image of a fundus of an examinee's eye by an optical coherence tomography device; and an analysis processing instruction of acquiring analysis information relating to layer thickness information of the fundus of the examinee's eye by referring to the first database.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: April 9, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Ai Yamakawa, Hisanari Torii, Norimasa Satake, Tetsuya Kano, Ryoichi Aihara
  • Patent number: 10238281
    Abstract: An optical coherence tomography device includes an OCT optical system that irradiates a tissue of the subject's eye with measurement light from a light source, and detects interference between reference light and the measurement light reflected from the tissue by using a detector, and a processor, in which the processor performs a generation process of acquiring A-scan data based on a signal output from the detector in a cycle of 300 kilohertz or more and generating three-dimensional OCT data at any time based on the acquired A-scan data, and performs an analysis process on each piece of the three-dimensional OCT data generated at any time through the generation process, so as to output a real-time analysis result of the three-dimensional OCT data which is generated at any time.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: March 26, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Naoki Isogai, Hideki Aono, Yukihiro Higuchi, Yuji Murase, Norimasa Satake, Keiji Murata
  • Publication number: 20180360304
    Abstract: An ophthalmologic information processing device includes a processor and a memory that stores computer-readable instructions. The computer-readable instructions, when executed by the processor, cause the ophthalmologic information processing device to perform processes that include setting a target position on an ocular fundus of a patient's eye, determining a position of one of a ganglion cell corresponding to a photoreceptor cell present at the target position and a photoreceptor cell corresponding to a ganglion cell present at the target position, and obtaining a first analysis result of a retina at the determined position based on one of a second analysis result and a third analysis result. The second analysis result includes an analysis result of the retina at a center point of the determined position and an analysis result of the retina at an auxiliary point. The third analysis result includes an analysis result of the retina in an analysis region.
    Type: Application
    Filed: August 23, 2018
    Publication date: December 20, 2018
    Applicant: NIDEK CO., LTD.
    Inventors: Tetsuya KANO, Norimasa SATAKE, Hisanari TORII, Ryosuke SHIBA
  • Patent number: 10070780
    Abstract: An ophthalmologic photographing apparatus includes: a photographing optical system that includes a scanning unit for scanning an examinee's eye with measurement light to obtain a tomographic image of the examinee's eye; an observing optical system that includes a light-receiving device for receiving reflected light from the examinee's eye to obtain a moving image of a front image of the examinee's eye based on a light-receiving signal from the light-receiving device; a display controller for displaying the front image acquired by the observing optical system in a still state on a monitor as well as enabling setting of a capturing position of the tomographic image, the setting using the front image; and a drive controller for controlling the scanning unit to acquire the tomographic image in accordance with the capturing position.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: September 11, 2018
    Assignee: NIDEK CO., LTD.
    Inventors: Yuji Murase, Yukihiro Higuchi, Norimasa Satake
  • Patent number: 10064546
    Abstract: An ophthalmic analysis apparatus is the ophthalmic analysis apparatus for obtaining analysis results of tomography images of a subject eye acquired at different dates by ophthalmic optical coherence tomography and outputting statistical information formed based on time-series data of the analysis results, and includes instruction receiving means for receiving selection instructions to select an analytical region on a subject eye from an examiner, and control means for respectively acquiring analysis results in the analytical region selected by the instruction receiving means with respect to tomography images acquired at the different dates and outputting the statistical information.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: September 4, 2018
    Assignee: NIDEK CO., LTD.
    Inventors: Ai Yamakawa, Norimasa Satake, Tetsuya Kano, Hisanori Torii
  • Patent number: 9962074
    Abstract: An ophthalmic imaging device that captures an image of a test eye, the device includes: an OCT optical system configured to acquire an OCT signal by scanning a tissue of the test eye with measurement light, the ophthalmic imaging device configured to execute: receiving a designation of a wide area which is wider than a unit area which is an acquisition unit for acquiring motion contrast data indicating a motion of the tissue; acquiring a plurality of OCT signals for the same position at different timing in each of a plurality of unit areas, the plurality of unit areas being positioned in the designated wide area and being not completely overlapped with each other; and acquiring the motion contrast data of each of the plurality of unit areas by processing the plurality of OCT signals acquired for the same position.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: May 8, 2018
    Assignee: NIDEK CO., LTD.
    Inventors: Norimasa Satake, Ai Takaya
  • Publication number: 20180064336
    Abstract: An ophthalmic analysis apparatus for analyzing OCT motion contrast (MC) image data of a subject's eye acquired using an OCT apparatus for ophthalmology includes analysis process means for analyzing the OCT MC image data, in which the analysis process means generates OCT blood vessel change data including temporal change information in relation to a blood vessel region of the subject's eye based on first OCT MC image data and second OCT MC image data acquired at mutually different times.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 8, 2018
    Applicant: NIDEK CO., LTD.
    Inventors: Tetsuya KANO, Norimasa SATAKE, Yukihiro HIGUCHI, Yasuhiro FURUUCHI
  • Publication number: 20170360294
    Abstract: An OCT motion contrast data acquisition method using an optical coherence tomography device includes: controlling an optical scanner for scanning measurement light on a test subject; performing a first scanning control for obtaining a first OCT signal group including at least four temporally different OCT signals at a same scanning position; performing a second scanning control for obtaining a second OCT signal group including at least four temporally different OCT signals at the same scanning position; obtaining first motion contrast data based on the first OCT signal group obtained in the first scanning control; obtaining second motion contrast data based on the second OCT signal group obtained in the second scanning control; and obtaining third motion contrast data based on the first motion contrast data and the second motion contrast data.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Applicant: NIDEK CO., LTD.
    Inventors: Norimasa SATAKE, Yukihiro HIGUCHI
  • Patent number: 9795291
    Abstract: An optical coherence tomography device includes: an OCT optical system configured to obtain a OCT signal; a front observation optical system configured to obtain a front image of the test substance; and a controller is configured to: control the OCT optical system to obtain first temporally different OCT signals with respect to the test substance; control the front observation optical system to obtain a first front image of the test substance at the time the first OCT signals are obtained; control the front observation optical system to obtain a second front image of the test substance after that; determine whether or not the plurality of first OCT signals are good based on a positional deviation between the first and second front images; and obtain motion contrast data of the test substance when it is determined that the plurality of first OCT signals are good.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: October 24, 2017
    Assignee: NIDEK CO., LTD.
    Inventors: Norimasa Satake, Yukihiro Higuchi, Naoki Takeno
  • Patent number: 9743830
    Abstract: A fundus photography device includes: an OCT optical system configured to detect interference between a measurement light from a fundus of a subject's eye and a reference light from a reference optical path; a fundus photography optical system configured to detect a reflected light from the fundus; a controller configured to generate a tomographic image of the fundus and a first front image of the fundus based on an output signal from the OCT optical system, and generate a second front image of the fundus based on an output signal from the fundus photography optical system. The controller is configured to cause simultaneous display of the first front image and the second front image in different display regions on a monitor.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 29, 2017
    Assignee: NIDEK CO., LTD.
    Inventors: Norimasa Satake, Naoto Honda
  • Publication number: 20170238798
    Abstract: An optical coherence tomography device includes an OCT optical system that irradiates a tissue of the subject's eye with measurement light from a light source, and detects interference between reference light and the measurement light reflected from the tissue by using a detector, and a processor, in which the processor performs a generation process of acquiring A-scan data based on a signal output from the detector in a cycle of 300 kilohertz or more and generating three-dimensional OCT data at any time based on the acquired A-scan data, and performs an analysis process on each piece of the three-dimensional OCT data generated at any time through the generation process, so as to output a real-time analysis result of the three-dimensional OCT data which is generated at any time.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 24, 2017
    Applicant: NIDEK CO., LTD.
    Inventors: Naoki ISOGAI, Hideki AONO, Yukihiro HIGUCHI, Yuji MURASE, Norimasa SATAKE, Keiji MURATA
  • Patent number: 9687143
    Abstract: Disclosed is an ophthalmic photography device for capturing an eye including: a first photography optical system that captures a first image of the eye by capturing the eye by performing a first type of photography; a second photography optical system that captures a second image of the eye by capturing the eye by performing a second type of photography; a third photography optical system that captures a front image of the eye by capturing the eye using a third type of photography; and a controller for acquiring a first front image when the first image is acquired, and acquiring a second front image different from the first front image when the second image is acquired; and for detecting the amount of positional deviation between the first and second front images, and correlating the first image to the second image based on the amount of positional deviation.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: June 27, 2017
    Assignee: NIDEK CO., LTD.
    Inventors: Norimasa Satake, Tetsuya Kanou
  • Publication number: 20170172405
    Abstract: An ophthalmologic information processing apparatus for performing follow-up of a subject eye based on plural pieces of OCT data obtained at different dates includes: a processor; and memory storing computer readable instructions, when executed by the processor, causing the ophthalmologic information processing apparatus to execute: a first acquisition process of acquiring plural pieces of layer thickness information regarding a fundus, the plural pieces of layer thickness information being a processing result of the plural pieces of OCT data of the subject eye; a matching process of matching the pieces of layer thickness information based on the plural pieces of OCT data to each other in consideration of a difference in acquisition condition among the pieces of OCT data; and a display control process of displaying results of the matching of the pieces of layer thickness information on a monitor.
    Type: Application
    Filed: December 1, 2016
    Publication date: June 22, 2017
    Applicant: NIDEK CO., LTD.
    Inventors: Hisanari TORII, Norimasa SATAKE
  • Publication number: 20170112377
    Abstract: An ophthalmic analysis device for analyzing OCT motion contrast data including blood vessel information of a subject eye acquired by an ophthalmic OCT, includes: an analysis processing means configured to analyze the OCT motion contrast data to acquire a measurement result related to a capillary area of the subject eye, wherein the analysis processing means an alleviating process for alleviating the influence of great blood vessels having blood vessel diameters larger than those of capillaries on the measurement result to acquire the measurement result related to the capillary area.
    Type: Application
    Filed: October 19, 2016
    Publication date: April 27, 2017
    Applicant: NIDEK CO., LTD.
    Inventors: Ryosuke SHIBA, Norimasa SATAKE, Tetsuya KANO, Yasuhiro FURUUCHI, Yuki KUNO, Ai TAKAYA, Naoki TAKENO, Yukihiro HIGUCHI, Hajime NAMIKI