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: 11452452Abstract: 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: GrantFiled: January 5, 2017Date of Patent: September 27, 2022Assignee: NIDEK CO., LTD.Inventors: Naoki Takeno, Masaaki Hanebuchi, Yasuhiro Furuuchi, Hajime Namiki
-
Patent number: 11378684Abstract: 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: GrantFiled: June 4, 2020Date of Patent: July 5, 2022Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.Inventors: Hajime Namiki, Hiroyuki Kobayashi, Eisuke Otani
-
Patent number: 11071452Abstract: 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: GrantFiled: June 29, 2015Date of Patent: July 27, 2021Assignee: NIDEK CO., LTD.Inventors: Norimasa Satake, Yukihiro Higuchi, Yuji Murase, Yasuhiro Furuuchi, Hajime Namiki, Naoki Isogai, Masaaki Hanebuchi, Naoki Takeno
-
Publication number: 20210033718Abstract: To detect an object present in the vicinity.Type: ApplicationFiled: February 28, 2019Publication date: February 4, 2021Applicants: 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: 20200301006Abstract: 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: ApplicationFiled: June 4, 2020Publication date: September 24, 2020Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.Inventors: Hajime NAMIKI, Hiroyuki KOBAYASHI, Eisuke OTANI
-
Patent number: 10718601Abstract: 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: GrantFiled: February 20, 2018Date of Patent: July 21, 2020Assignee: NIDEK CO., LTD.Inventors: Naoki Takeno, Masaaki Hanebuchi, Yasuhiro Furuuchi, Hajime Namiki
-
Publication number: 20190380588Abstract: 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: ApplicationFiled: January 5, 2017Publication date: December 19, 2019Applicant: NIDEK CO., LTD.Inventors: Naoki TAKENO, Masaaki HANEBUCHI, Yasuhiro FURUUCHI, Hajime NAMIKI
-
Patent number: 10492682Abstract: 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: GrantFiled: October 19, 2016Date of Patent: December 3, 2019Assignee: NIDEK CO., LTD.Inventors: Ryosuke Shiba, Norimasa Satake, Tetsuya Kano, Yasuhiro Furuuchi, Yuki Kuno, Ai Takaya, Naoki Takeno, Yukihiro Higuchi, Hajime Namiki
-
Patent number: 10213100Abstract: 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: GrantFiled: June 29, 2015Date of Patent: February 26, 2019Assignee: NIDEK CO., LTD.Inventors: Naoki Takeno, Yasuhiro Furuuchi, Hajime Namiki
-
Publication number: 20180172426Abstract: 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: ApplicationFiled: February 20, 2018Publication date: June 21, 2018Applicant: NIDEK CO., LTD.Inventors: Naoki TAKENO, Masaaki HANEBUCHI, Yasuhiro FURUUCHI, Hajime NAMIKI
-
Patent number: 9933246Abstract: 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: GrantFiled: December 11, 2014Date of Patent: April 3, 2018Assignee: NIDEK CO., LTD.Inventors: Naoki Takeno, Masaaki Hanebuchi, Yasuhiro Furuuchi, Hajime Namiki
-
Patent number: 9687147Abstract: 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: GrantFiled: December 1, 2015Date of Patent: June 27, 2017Assignee: NIDEK CO., LTD.Inventors: Yasuhiro Furuuchi, Masaaki Hanebuchi, Masakazu Endo, Hajime Namiki, Naoki Takeno
-
Publication number: 20170112377Abstract: 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: ApplicationFiled: October 19, 2016Publication date: April 27, 2017Applicant: NIDEK CO., LTD.Inventors: Ryosuke SHIBA, Norimasa SATAKE, Tetsuya KANO, Yasuhiro FURUUCHI, Yuki KUNO, Ai TAKAYA, Naoki TAKENO, Yukihiro HIGUCHI, Hajime NAMIKI
-
Publication number: 20160150954Abstract: 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: ApplicationFiled: December 1, 2015Publication date: June 2, 2016Applicant: NIDEK CO., LTD.Inventors: Yasuhiro FURUUCHI, Masaaki HANEBUCHI, Masakazu ENDO, Hajime NAMIKI, Naoki TAKENO
-
Publication number: 20150374227Abstract: 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: ApplicationFiled: June 29, 2015Publication date: December 31, 2015Applicant: NIDEK CO., LTD.Inventors: Naoki TAKENO, Yasuhiro FURUUCHI, Hajime NAMIKI
-
Publication number: 20150374228Abstract: 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: ApplicationFiled: June 29, 2015Publication date: December 31, 2015Applicant: NIDEK CO., LTD.Inventors: Norimasa SATAKE, Yukihiro HIGUCHI, Yuji MURASE, Yasuhiro FURUUCHI, Hajime NAMIKI, Naoki ISOGAI, Masaaki HANEBUCHI, Naoki TAKENO
-
Publication number: 20150182111Abstract: 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: ApplicationFiled: December 1, 2014Publication date: July 2, 2015Applicant: NIDEK CO., LTD.Inventors: Hajime NAMIKI, Junpei NISHIYAMA, Natsuru MISAKI
-
Publication number: 20150168127Abstract: 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: ApplicationFiled: December 11, 2014Publication date: June 18, 2015Applicant: NIDEK CO., LTD.Inventors: Naoki TAKENO, Masaaki HANEBUCHI, Yasuhiro FURUUCHI, Hajime NAMIKI
-
Patent number: 9058652Abstract: 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: GrantFiled: January 30, 2013Date of Patent: June 16, 2015Assignee: NIDEK CO., LTD.Inventors: Masaaki Hanebuchi, Norimasa Satake, Yasuhiro Furuuchi, Hajime Namiki