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公开(公告)号：US12201359B2
公开(公告)日：2025-01-21
申请号：US17707305
申请日：2022-03-29
Applicant: NIDEK CO., LTD.
Inventor： Hirofumi Yogo
Abstract: An OCT apparatus has a wavelength sweep light source changing a sweep frequency between a first sweep frequency and a second sweep frequency, an OCT optical system, an image processor, an FPN generation optical system generating a first FPN and a second FPN generated at a position separated from a zero delay position with respect to the first FPN, a detector, and a controller. The controller acquires first correction information based on the first FPN detected in a case of the first sweep frequency, and second correction information based on the second FPN detected in a case of the second sweep frequency. The controller applies the first correction information to an arithmetic process on a spectral interference signal obtained in the case of the first sweep frequency, and the second correction information to the arithmetic process on the spectral interference signal obtained in the case of the second sweep frequency.
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2.发明授权公开(公告)号：US11992265B2
公开(公告)日：2024-05-28
申请号：US17366809
申请日：2021-07-02
Applicant: NIDEK CO., LTD.
Inventor： Ryosuke Shiba , Tetsuya Kano , Yukihiro Higuchi
CPC classification number: A61B3/102 , A61B3/0058 , G06T7/0012 , G06T2207/10101 , G06T2207/30041
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.
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3.发明公开公开(公告)号：US20240169528A1
公开(公告)日：2024-05-23
申请号：US18403357
申请日：2024-01-03
Applicant: NIDEK CO., LTD.
Inventor： Ryosuke SHIBA , Tomohiro SASAKI
CPC classification number: G06T7/0012 , G06N20/00 , G16H30/20 , G16H30/40 , G06T2207/10072 , G06T2207/30041
Abstract: A medical image processing device processes tomographic image data of a living tissue. The medical image processing device includes a control unit that includes at least one processor and at least one memory storing computer program code. The computer program code, when executed by the at least one processor, causes the at least one processor to: acquire a tomographic image in which a layer of the living tissue appears; perform a tilt-reduction process on the acquired tomographic image to reduce a tilt of the layer of the living tissue with respect to a main direction; and acquire medical data by inputting, into a mathematical model, a tilt-reduced image that is the tomographic image on which the tilt-reduction process was performed.
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公开(公告)号：US20240016472A1
公开(公告)日：2024-01-18
申请号：US18477861
申请日：2023-09-29
Applicant: NIDEK CO., LTD.
Inventor： Tsutomu UEMURA , Kazunari SHIMIZU , Koji HAMAGUCHI
Abstract: An ultrasonic tonometer for measuring intraocular pressure of a subject eye by using an ultrasonic wave. The ultrasonic tonometer includes an irradiation unit configured to irradiate the subject eye with a focused ultrasonic wave, and a Z-alignment detection unit configured to detect an alignment state in a working distance direction with respect to the subject eye. An appropriate Z-alignment position is set to a position that is farther from the irradiation unit than is a geometric focal position of the irradiation unit. The appropriate Z-alignment position is detected by the Z-alignment detection unit.
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公开(公告)号：US11871992B2
公开(公告)日：2024-01-16
申请号：US17484762
申请日：2021-09-24
Applicant: NIDEK CO., LTD.
Inventor： Taeko Horino , Hirohisa Terabe , Jouji Seko
IPC: A61B3/036
CPC classification number: A61B3/036
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.
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Patent Agency Ranking
公开(公告)号：US20230233080A1
公开(公告)日：2023-07-27
申请号：US18192078
申请日：2023-03-29
Applicant: NIDEK CO., LTD.
Inventor： Naoki TAKENO , Yasuhiro FURUUCHI , Shinya MITO , Kouji HAMAGUCHI
CPC classification number: A61B3/185 , A61B3/0025 , A61B3/0075
Abstract: An ophthalmic system for examining a subject eye of an examinee includes a plurality of examination units, a robot mechanism, and a controller. The plurality of examination units have housings different from each other, perform examinations different from each other, and include at least a first examination unit and a second examination unit. The robot mechanism has a holding unit that holds and releases either the first examination unit or the second examination unit, and a moving unit that is connected to the holding unit and moves three-dimensionally. A controller controls driving of the robot mechanism to adjust a relative positional relationship between the subject eye and the first examination unit or the second examination unit held by the holding unit. The first examination unit or the second examination unit is replaced to be held by the holding unit for performing a different examination on the subject eye.
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公开(公告)号：US20230034573A1
公开(公告)日：2023-02-02
申请号：US17788946
申请日：2020-12-18
Applicant: NIDEK CO., LTD.
Inventor： Katsuyasu MIZUNO , Toshihiro KOBAYASHI , Yujiro TOCHIKUBO , Yuichi MATSUBARA
IPC: G01M11/02
Abstract: An eyeglasses lens measurement device measures an eyeglasses lens of eyeglasses. The eyeglasses lens measurement device includes a light source that emits a measurement light flux toward the eyeglasses lens, a transmissive display that transmits the measurement light flux from the light source and displays an index pattern formed by arranging a plurality of indexes, a detector that detects the measurement light flux passing through the eyeglasses lens and the transmissive display, and a controller. The controller is configured to control a display of the index pattern, acquire an optical characteristic of the eyeglasses lens, based on a detection result of the detector, and acquire lens information different from the optical characteristic of the eyeglasses lens, based on a detection result of the detector.
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公开(公告)号：US11534061B2
公开(公告)日：2022-12-27
申请号：US16585122
申请日：2019-09-27
Applicant: NIDEK CO., LTD.
Inventor： Michihiro Takii , Yukito Hirayama
Abstract: A subjective optometry apparatus includes an optometry unit having an optical member, being located in front of a subject eye, and changing optical characteristics of a target light flus with using the optical member, and a measurement optical system that has a light projecting optical system for applying measurement light emitted from a measurement light source to a fundus of the subject eye through the optometry unit, and a light receiving optical system in which a detector receives reflected light of the measurement light reflected on the fundus of the subject eye through the optometry unit, and that objectively measures the optical characteristics of the subject eye. An optical axis of the measurement optical system is set to be off-axis from an optical axis of the optical member in the optometry unit.
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公开(公告)号：US20220386864A1
公开(公告)日：2022-12-08
申请号：US17829815
申请日：2022-06-01
Applicant: NIDEK CO., LTD.
Inventor： Yukihiro HIGUCHI
Abstract: An OCT apparatus processes an OCT signal based on reference light and measurement light with which a subject eye is irradiated to capture a tomographic image of a tissue of the subject eye. The OCT apparatus includes a controller. The controller captures a three-dimensional tomographic image of the tissue by irradiating a two-dimensional measurement region, which expands in a direction intersecting an optical axis of the measurement light, with the measurement light. The controller extracts a two-dimensional tomographic image from the three-dimensional tomographic image to display the two-dimensional tomographic image on a display unit. The controller sets an additional imaging position of a tomographic image in a state where the two-dimensional tomographic image is displayed on the display unit. The controller performs additional capturing of a tomographic image by irradiating the set additional imaging position with the measurement light.
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公开(公告)号：US11508062B2
公开(公告)日：2022-11-22
申请号：US16830936
申请日：2020-03-26
Applicant: NIDEK CO., LTD.
Inventor： Ryosuke Shiba , Yoshiki Kumagai , Naoto Honda , Kenshiro Fujiu , Yuji Murase , Shohei Ito
Abstract: An ophthalmological image processing apparatus acquires a plurality of images of a subject eye photographed in a scanning-type imaging optical system, sets any one of the plurality of images as a template, sets corresponding points or corresponding regions between an image of the subject eye and the template at a plurality of positions of each of the image of the subject eye and the template, calculates a movement amount of each of the corresponding points or each of the corresponding regions, and corrects a distortion of the image of the subject eye with respect to the template based on the movement amount of each of the corresponding points or each of the corresponding regions.
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