Patents by Inventor Hajime Namiki

Hajime Namiki 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: 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
  • Publication number: 20210033718
    Abstract: To detect an object present in the vicinity.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 4, 2021
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Hiroyuki KOBAYASHI, Taishi KAGIMOTO, Tadataka WAKABISHI, Sadao MATSUSHIMA, Hajime NAMIKI, Jun MIURA, Tomoki KAWAMURA, Noriyuki SHOJI
  • Publication number: 20200301006
    Abstract: Provided is a radar device including: a transmission circuit that transmits a first transmission signal and a second transmission signal which have frequencies different from each other; a reception circuit that receives the first transmission signal and the second transmission signal which are reflected by one or a plurality of objects as a first reception signal and a second reception signal, a processor, and a memory that stores a command group executable by the processor.
    Type: Application
    Filed: June 4, 2020
    Publication date: September 24, 2020
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Hajime NAMIKI, Hiroyuki KOBAYASHI, Eisuke OTANI
  • Patent number: 10718601
    Abstract: An optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 21, 2020
    Assignee: NIDEK CO., LTD.
    Inventors: Naoki Takeno, Masaaki Hanebuchi, Yasuhiro Furuuchi, Hajime Namiki
  • Publication number: 20190380588
    Abstract: An OCT signal processing device has an acquisition unit for acquiring three or more OCT signals being temporally different from each other with respect to the same position on a subject, from an OCT device that detects an OCT signal based on reflection light of measurement light applied to a subject and reference light corresponding to the measurement light, and a calculation unit for calculating motion contrast based on a plurality of OCT signals. The calculation unit selects two or more sets of OCT signals having different time interval between the OCT signals among sets obtained by extracting a plurality of OCT signals out of the three or more OCT signals, and calculates motion contrast for each of the selected two or more sets.
    Type: Application
    Filed: January 5, 2017
    Publication date: December 19, 2019
    Applicant: NIDEK CO., LTD.
    Inventors: Naoki TAKENO, Masaaki HANEBUCHI, Yasuhiro FURUUCHI, Hajime NAMIKI
  • 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: 10213100
    Abstract: An optical coherence tomography apparatus includes an OCT optical system configured to detect an OCT signal based on measurement light scanned on scan positions of a subject including a blood vessel network by a scanning unit and reference light. The optical coherence tomography apparatus is configured to execute: a signal processing instruction of processing OCT signals which are temporally different from each other with respect to a same position on the subject and generating a motion contrast image which images distribution of a moving object in a depth direction at each of the scan positions based on the OCT signals; and a detecting instruction of analyzing a profile in the depth direction of the motion contrast image generated by the signal processing unit and detecting a change resulting from the blood vessel to detect the blood vessel network included in the subject.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: February 26, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Naoki Takeno, Yasuhiro Furuuchi, Hajime Namiki
  • Publication number: 20180172426
    Abstract: An optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.
    Type: Application
    Filed: February 20, 2018
    Publication date: June 21, 2018
    Applicant: NIDEK CO., LTD.
    Inventors: Naoki TAKENO, Masaaki HANEBUCHI, Yasuhiro FURUUCHI, Hajime NAMIKI
  • Patent number: 9933246
    Abstract: There is provided an optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 3, 2018
    Assignee: NIDEK CO., LTD.
    Inventors: Naoki Takeno, Masaaki Hanebuchi, Yasuhiro Furuuchi, Hajime Namiki
  • Patent number: 9687147
    Abstract: An optical coherence tomography device includes an OCT optical system; a processor. The processor executes: an image generation processing of processing first OCT signals, and generating, based on the first OCT signals, a three-dimensional motion contrast image which is obtained by imaging a moving object in the scanning position; a Doppler shift detection processing of detecting Doppler shift in a scanning position specified on the three-dimensional motion contrast image, the plurality of second OCT signals being detected at timings different from the timings when the plurality of first OCT signals are detected; and a velocity obtaining processing of obtaining an absolute velocity of the moving object based on the Doppler shift detected by the Doppler shift detection processing and a three-dimensional structure of the test subject obtained from the three-dimensional motion contrast image generated by the image generation processing.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: June 27, 2017
    Assignee: NIDEK CO., LTD.
    Inventors: Yasuhiro Furuuchi, Masaaki Hanebuchi, Masakazu Endo, Hajime Namiki, Naoki Takeno
  • 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
  • Publication number: 20160150954
    Abstract: An optical coherence tomography device includes an OCT optical system; a processor. The processor executes: an image generation processing of processing first OCT signals, and generating, based on the first OCT signals, a three-dimensional motion contrast image which is obtained by imaging a moving object in the scanning position; a Doppler shift detection processing of detecting Doppler shift in a scanning position specified on the three-dimensional motion contrast image, the plurality of second OCT signals being detected at timings different from the timings when the plurality of first OCT signals are detected; and a velocity obtaining processing of obtaining an absolute velocity of the moving object based on the Doppler shift detected by the Doppler shift detection processing and a three-dimensional structure of the test subject obtained from the three-dimensional motion contrast image generated by the image generation processing.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 2, 2016
    Applicant: NIDEK CO., LTD.
    Inventors: Yasuhiro FURUUCHI, Masaaki HANEBUCHI, Masakazu ENDO, Hajime NAMIKI, Naoki TAKENO
  • Publication number: 20150374228
    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: Application
    Filed: June 29, 2015
    Publication date: December 31, 2015
    Applicant: NIDEK CO., LTD.
    Inventors: Norimasa SATAKE, Yukihiro HIGUCHI, Yuji MURASE, Yasuhiro FURUUCHI, Hajime NAMIKI, Naoki ISOGAI, Masaaki HANEBUCHI, Naoki TAKENO
  • Publication number: 20150374227
    Abstract: An optical coherence tomography apparatus includes an OCT optical system configured to detect an OCT signal based on measurement light scanned on scan positions of a subject including a blood vessel network by a scanning unit and reference light. The optical coherence tomography apparatus is configured to execute: a signal processing instruction of processing OCT signals which are temporally different from each other with respect to a same position on the subject and generating a motion contrast image which images distribution of a moving object in a depth direction at each of the scan positions based on the OCT signals; and a detecting instruction of analyzing a profile in the depth direction of the motion contrast image generated by the signal processing unit and detecting a change resulting from the blood vessel to detect the blood vessel network included in the subject.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 31, 2015
    Applicant: NIDEK CO., LTD.
    Inventors: Naoki TAKENO, Yasuhiro FURUUCHI, Hajime NAMIKI
  • Publication number: 20150182111
    Abstract: An optical tomographic image photographing apparatus for acquiring information on a tissue inside a specimen, the apparatus includes: a synthesis unit configured to generate a interference beam by synthesizing a measuring beam reflected from the tissue and a reference beam; and a detector configured to detect the generated first interference beam as a first interference signal, the first interference beam being detected for each scanning position of the measuring beam. The optical tomographic image photographing apparatus acquires tomographic information for each scanning position of the specimen by using the detected first interference signal and acquiring tomographic image data of the specimen expressed by polar coordinates by using the tomographic information; and converts the tomographic image data of the specimen expressed by the acquired polar coordinates into image data expressed by rectangular coordinates.
    Type: Application
    Filed: December 1, 2014
    Publication date: July 2, 2015
    Applicant: NIDEK CO., LTD.
    Inventors: Hajime NAMIKI, Junpei NISHIYAMA, Natsuru MISAKI
  • Publication number: 20150168127
    Abstract: There is provided an optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 18, 2015
    Applicant: NIDEK CO., LTD.
    Inventors: Naoki TAKENO, Masaaki HANEBUCHI, Yasuhiro FURUUCHI, Hajime NAMIKI
  • Patent number: 9058652
    Abstract: A method for reducing noise in a tomographic image, includes: acquiring phase information of a noise component signal, the signal being provided as a signal corresponding to a noise component of the tomographic image and included in a spectrum interference signal output from a detector of a swept source optical coherence tomography device; acquiring a tomographic image in response to a spectrum interference signal with a corrected phase deviation based on the acquired phase information; and reducing the noise component of this tomographic image.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: June 16, 2015
    Assignee: NIDEK CO., LTD.
    Inventors: Masaaki Hanebuchi, Norimasa Satake, Yasuhiro Furuuchi, Hajime Namiki