Patents Assigned to Nidek Co., Ltd.
  • Publication number: 20220284577
    Abstract: A processor of a fundus image processing device acquires a fundus image 50 photographed by a fundus image photographing device. The processor acquires blood vessel images 60A and 60B that indicate at least one of an arteriole and a venule in the fundus image 50 by inputting the fundus image 50 into a mathematical model trained by a machine learning algorithm. The processor acquires a blood vessel area that is an area of at least one of the arteriole and the venule in the whole of the blood vessel images 60A and 60B.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NIDEK CO., LTD.
    Inventors: Michiyuki SAITO, Kousuke NODA, Kanae FUKUTSU, Susumu ISHIDA, Ryosuke SHIBA, Yoshiki KUMAGAI
  • Patent number: 11412925
    Abstract: An ophthalmic imaging apparatus includes an OCT optical system that detects an interference signal between measurement light with which a subject eye is irradiated and reference light, and acquires OCT data of the subject eye by processing the interference signal, a scanner that scans with the measurement light on a scanning line on the subject eye, and a processor. The processor determines whether or not the OCT data acquired on the scanning line is proper, controls the scanner based on a determination result to change the scanning line for the measurement light to the next scanning line, and interpolates an alternative to OCT data determined not to be proper, based on OCT data corresponding to scanning lines around a scanning line on which the OCT data determined not to be proper is acquired.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: August 16, 2022
    Assignee: NIDEK CO., LTD.
    Inventor: Akira Kataoka
  • Patent number: 11395586
    Abstract: A subjective optometry apparatus subjectively measures optical characteristics of a subject eye. The subjective optometry apparatus includes a light projecting optical system, an optical path switching portion that switches between a first optical path having a first examination distance and a second optical path having a second examination distance, and an examination distance changing portion that optically changes the first examination distance or the second examination distance. Based on examination distance information, the examination distance changing unit causes the optical path switching portion to set an optical path to either the first optical path or the second optical path, and drives a distance changing optical member in the set optical path to optically change the examination distance to an examination distance different from the first examination distance and the second examination distance.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: July 26, 2022
    Assignee: NIDEK CO., LTD.
    Inventor: Yukito Hirayama
  • Publication number: 20220225877
    Abstract: A control section of an ophthalmologic image processing apparatus acquires an ophthalmologic image captured by an ophthalmologic image capturing apparatus. The control section acquires, for the acquired ophthalmologic image, evaluation information indicating an appropriateness for acquiring medical data including at least any of an analysis result relating to a disease of a subject eye, an analysis result relating to the structure of the subject eye, and an image converted from the acquired ophthalmologic image. The control section acquires the medical data based on the acquired ophthalmologic image. The control section changes a medical data acquisition method according to whether or not the evaluation information on the ophthalmologic image satisfies a criterion.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 21, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Ryosuke SHIBA, Sohei MIYAZAKI, Yoshiki KUMAGAI
  • Patent number: 11389055
    Abstract: A computer displays a part or the entirety of a first image, which is one of the plurality of registered images, in a first display region on a monitor, receives a switching instruction to switch an image displayed in the first display region, in a state where the first image is displayed in the first display region, from the first image to a second image which is one of the plurality of registered images and is different from the first image, and displays a part or the entirety of the second image adjusted based on the displacement information to match a region on the subject eye indicated in the first display region with the first image, in the first display region based on the switching instruction.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: July 19, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Haruka Uemura, Riccardo Ferraris de Gaspare
  • Publication number: 20220220011
    Abstract: A grinding water treatment device for eyeglasses lens processing includes a centrifugal separator, a scraping unit, an opening, and a filter. The centrifugal separator includes a dehydration tank into which grinding water used in a processing device of an eyeglasses lens is introduced, and separates the grinding water into water and processing chips by rotation of the dehydration tank. The scraping unit scrapes out the processing chips accumulated on a side wall inside the dehydration tank. The opening is provided in the dehydration tank and through which the processing chips scraped out by the scraping unit are ejected to an outside of the dehydration tank. The filter is provided in an outer region of the opening, and through which the water separated from the grinding water by rotation of the dehydration tank passes to allow the processing chips to be present inside the dehydration tank.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 14, 2022
    Applicant: NIDEK CO., LTD.
    Inventor: Ryuma SAKUDA
  • Patent number: 11357399
    Abstract: An OCT apparatus includes an OCT optical system that has a light splitter splitting light from an OCT light source to light travelling to a measurement light path and light travelling to a reference light path and a detector detecting a spectrum interference signal of measurement light guided to a subject eye through the measurement light path and reference light from the reference light path, and a processing unit that processes the spectrum interference signal to generate OCT data. The processing unit performs at least complementary processing on an overlapping region of a real image and a virtual image in OCT data based on a plurality of OCT data obtained with different optical path lengths when detecting the spectrum interference signal, and generates OCT data subjected to the complementary processing.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: June 14, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Ryosuke Shiba, Masaaki Hanebuchi, Naoki Takeno, Yoshiki Kumagai
  • Patent number: 11357398
    Abstract: An image processing device processes an image of a subject eye. The image processing device includes an image acquisition unit that acquires an image of the subject eye, a diagnosis unit that obtains a diagnosis result of the subject eye based on the image acquired by the image acquisition unit, and a display control unit that changes a display mode of a display unit based on the diagnosis result.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: June 14, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Yoshiki Kumagai, Tomohiro Miyagi, Sohei Miyazaki, Ryosuke Shiba
  • Publication number: 20220164949
    Abstract: An ophthalmic image processing device processes an ophthalmic image of a subject eye. The ophthalmic image processing device includes a controller which acquires an ophthalmic image including a tomographic image of a plurality of tomographic planes in a subject eye, acquires a probability distribution for identifying two or more tissues included in a plurality of tissues in the tomographic image, by inputting the ophthalmic image into a mathematical model trained with using a machine learning algorithm, generates a structural abnormality degree map showing a two-dimensional distribution of a degree of abnormality of a structure in the tissue, for each of the two or more tissues, based on the probability distribution, and simultaneously displays two or more structural abnormality degree maps generated for each of the two or more tissues side by side on a display device.
    Type: Application
    Filed: November 17, 2021
    Publication date: May 26, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Ryosuke SHIBA, Yoshiki KUMAGAI
  • Publication number: 20220161587
    Abstract: A dye-deposited base body manufacturing apparatus manufactures a dye-deposited base body. The dye-deposited base body is used in a dyeing step of dyeing a resin body. A dye to be transferred to the resin body is deposited to a base body. The dye-deposited base body manufacturing apparatus is provided with a printing device, a conveyance device, and a base body movement device. The printing device prints a dye for dyeing the resin body on the base body. The conveyance device conveys a dyeing tray on which the dye-deposited resin body on which the dye is printed by the printing device is placed. The base body movement device moves the dye-deposited base body from a printing position by the printing device to a side of the conveyance device.
    Type: Application
    Filed: November 24, 2021
    Publication date: May 26, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Ryoji SHIBATA, Minoru INUZUKA, Koji ABE, Motoshi TANAKA
  • Patent number: 11330978
    Abstract: A subjective optometry apparatus includes: a subjective measurer which has a corrective optical system disposed on an optical path of a light projecting optical system configured to project a target light flux toward an examinee's eye and configured to change an optical characteristic of the target light flux and which is configured to subjectively measure an optical characteristic of the examinee's eye; an acquisitor configured to acquire position information on at least one of examinee's right and left eyes; a determiner configured to determine, based on the position information acquired by the acquisitor, whether or not subjective measurement can be implemented in a binocular open state of the examinee's right and left eyes, thereby acquiring determination information; and a determination information output unit configured to output the determination information acquired by the determiner.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: May 17, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Taeko Horino, Michihiro Takii, Noriji Kawai
  • Publication number: 20220142475
    Abstract: An ophthalmic apparatus that examines an examinee's eye while an examination axis coincides with the examinee's eye, the ophthalmic apparatus including: a housing: an examination-purpose protrusion protruding along the examination axis toward the examinee's eye from an examinee's eye facing surface being a surface of the housing that faces the examinee's eye; an anterior segment imaging optical system configured to capture an image of the anterior segment of the examinee's eye; and a processor, wherein the processor executes: an anterior segment image acquisition step of acquiring the anterior segment image captured by the anterior segment imaging optical system; and a pupil position detection step of processing the acquired anterior segment image and detecting the position of the pupil of the examinee's eye while the influence of the shadow of the examination-purpose protrusion that appears in the anterior segment image is removed.
    Type: Application
    Filed: November 2, 2021
    Publication date: May 12, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Shinichi HASHIMOTO, Tomofumi FURUKAWA
  • Publication number: 20220095908
    Abstract: A first information processing device acquires an instruction signal for instructing an operation of a subjective optometry device, and transmits a drive signal for causing the subjective optometry device to operate as instructed by the acquired instruction signal to the subjective optometry device. When the first information processing device is remote-accessed by a second information processing device, the first information processing device can acquire the instruction signal input to the second information processing device by a user via a network. The first information processing device can further acquire a response input by an examinee who visually recognizes a presented target, and can further generate an instruction signal instructing the operation of the subjective optometry device based on the acquired response.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 31, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Hirohisa Terabe, Taeko Horino
  • Publication number: 20220095910
    Abstract: A subjective optometry system includes a plurality of subjective optometry devices and a database which stores at least any data of objective measurement data and previous glass data in association with each identifier. Each of the subjective optometry devices includes a calibration optical system, an information processor, and a reader which is connected to the information processor, reads an identifier prepared for each examinee, and outputs information about the read identifier to the information processor. The information processor acquires at least one of the objective measurement data and the previous glass data corresponding to the identifier from the database based on the identifier received from the reader, and sets an initial value of the calibration optical system used on an occasion of subjectively measuring optical characteristics of a subject eye based on at least one of the objective measurement data and the previous glass data.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 31, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Taeko HORINO, Hirohisa TERABE, Jouji SEKO
  • 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: 11226196
    Abstract: An eyeglass frame shape measurement device measures a shape of an eyeglass frame. The eyeglass frame shape measurement device includes a light projecting optical system that has a light source and emits measurement light from the light source toward a groove of a rim of an eyeglass frame, a light receiving optical system that has a detector and causes the detector to receive reflected light of the measurement light emitted toward the groove in the rim of the eyeglass frame by the light projecting optical system and reflected by the groove of the rim of the eyeglass frame, an acquisition section that acquires a cross-sectional shape of the groove of the rim of the eyeglass frame on the basis of the reflected light received by the detector, and a luminance control section that controls a luminance level of the reflected light to be received by the detector.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: January 18, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Michihiro Takii, Kunihito Mizukoshi, Tomoya Ishii, Kyoji Takeichi
  • Patent number: 11219362
    Abstract: A fundus imaging apparatus acquires a fundus image based on a signal from a light receiving element that receives fundus reflection light of illumination light with which a fundus of a subject eye is irradiated through an objective lens. The fundus imaging apparatus includes an information acquisition unit that acquires information relating to a refractive power of a subject eye, and a process that executes an artifact suppressing process for suppressing occurrence of an artifact due to reflection of the illumination light at the objective lens. The processor switches an imaging mode based on the refractive power between an invalid mode in which the artifact suppressing process is not executed and a valid mode in which the artifact suppressing process is executed.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: January 11, 2022
    Assignee: NIDEK CO., LTD.
    Inventor: Masayuki Yoshino
  • Publication number: 20220000361
    Abstract: There are provided an ophthalmologic information analysis apparatus and an ophthalmologic information analysis program capable of efficiently performing follow-up observation of a subject eye. There is provided: a central processing unit configured to: acquire first analysis data obtained by analyzing an analysis region of the subject eye in first OCT data including the analysis region; acquire second OCT data captured on a day different from that of the first OCT data; perform an analysis comprising: specifying the analysis region corresponding to the first analysis data from the second OCT data; and acquiring second analysis data obtained by analyzing the analysis region in the second OCT data; and control a display to display the first analysis data and the second analysis data in a comparable manner.
    Type: Application
    Filed: July 2, 2021
    Publication date: January 6, 2022
    Applicant: NIDEK CO., LTD.
    Inventors: Ryosuke SHIBA, Tetsuya KANO, Yukihiro HIGUCHI
  • Patent number: RE49023
    Abstract: A fundus observation apparatus that is capable of assisting an examiner in judging the presence or absence of abnormality in an examinee's eye based on a fundus tomographic image. The fundus observation apparatus includes an optical coherence tomography device that has an optical scanner for setting an image pickup position on a fundus of an examinee's eye, and is arranged to obtain a tomographic image of the fundus, and an information display unit that is arranged to display on a monitor the tomographic image obtained by the optical coherence tomography device and assisting information for assisting an examiner in performing judgment on the tomographic image, and the information display unit is arranged to change the assisting information based on image pickup information on the tomographic image.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: April 12, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Naoki Isogai, Toshio Murata
  • Patent number: RE49024
    Abstract: A fundus observation apparatus that is capable of assisting an examiner in judging the presence or absence of abnormality in an examinee's eye based on a fundus tomographic image. The fundus observation apparatus includes an optical coherence tomography device that has an optical scanner for setting an image pickup position on a fundus of an examinee's eye, and is arranged to obtain a tomographic image of the fundus, and an information display unit that is arranged to display on a monitor the tomographic image obtained by the optical coherence tomography device and assisting information for assisting an examiner in performing judgment on the tomographic image, and the information display unit is arranged to change the assisting information based on image pickup information on the tomographic image.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: April 12, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Naoki Isogai, Toshio Murata