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公开(公告)号：US10966862B2
公开(公告)日：2021-04-06
申请号：US15389924
申请日：2016-12-23
Applicant: NIDEK CO., LTD.
Inventor： Hitoshi Abe , Seiki Tomita , Masato Kawai
Abstract: An ophthalmic laser treatment apparatus for generating plasma by focusing a treatment laser beam to treat a treatment target portion of a patient's eye with the plasma includes: an irradiation optical system configured to irradiate the treatment laser beam to the patient's eye; a position adjusting unit configured to adjust a focusing position of the treatment laser beam in an optical axis direction with respect to a predetermined focusing reference position; an energy adjusting unit configured to adjust irradiation energy of the treatment laser beam; a storage unit configured to store evaluation information to evaluate a permissible combination of the focusing position and the irradiation energy with respect to the focusing position; and an evaluation unit configured to evaluate a combination of the focusing position adjusted by the position adjusting unit and the irradiation energy adjusted by the energy adjusting unit based on the evaluation information.
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公开(公告)号：US20210093187A1
公开(公告)日：2021-04-01
申请号：US17035910
申请日：2020-09-29
Applicant: NIDEK CO., LTD.
Inventor： Koichi ITO
Abstract: An ophthalmologic imaging apparatus includes: an OCT optical system for acquiring OCT data of a tissue of a subject eye based on a spectral interference signal of measurement light emitted to the tissue and reference light; a second optical system for acquiring a front image of the tissue; an optical element having asymmetry and being arranged on a common optical path of the OCT optical system and the second optical system; and arithmetic controller configured to associate an OCT data acquisition position with coordinates of the front image while taking at least a difference in distortion caused by the optical element between the OCT optical system and the second optical system into consideration.
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公开(公告)号：US20210093186A1
公开(公告)日：2021-04-01
申请号：US17034742
申请日：2020-09-28
Applicant: NIDEK CO., LTD.
Inventor： Ryosuke Shiba , Yukihiro Higuchi , Shinya Iwata , Junpei Nishiyama , Hideki Aono , Hirofumi Yogo
Abstract: Provided are ophthalmologic image processing method, including an acquisition step of acquiring OCT data of an eye to be examined based on a spectral interference signal output from an OCT optical system, a setting step of setting a depth region including an image position of a tissue as an extraction region for data on one-direction side from a zero delay position in the OCT data, and a display control step of extracting extracted OCT data corresponding to the extraction region from the OCT data and displaying the extracted OCT data in a display region set in advance on a monitor, and an OCT apparatus that executes the method.
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公开(公告)号：US20210068656A1
公开(公告)日：2021-03-11
申请号：US17043317
申请日：2019-03-26
Applicant: NIDEK CO., LTD.
Inventor： Tetsuyuki MIWA , Kazunari SHIMIZU , Shirohisa KOBAYASHI , Tsutomu UEMURA , Kenji NAKAMURA
IPC: A61B3/16
Abstract: A non-contact ultrasonic tonometer for measuring the eye pressure of an examinee's eye by use of ultrasound includes a Langevin transducer. The Langevin transducer applies ultrasound to the examinee's eye to measure the eye pressure of the examinee's eye. Further, A non-contact ultrasonic tonometer for measuring the eye pressure of an examinee's eye by use of ultrasound includes: ultrasonic generating means for generating ultrasound; a support base supporting the ultrasonic generating means; and attaching means for attaching the ultrasonic generating means to the support base.
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公开(公告)号：US20200288974A1
公开(公告)日：2020-09-17
申请号：US16780123
申请日：2020-02-03
Applicant: NIDEK CO., LTD.
Inventor： Shinya Iwata , Megumi Tsuchiya , Yukihiro Higuchi
Abstract: A fundus imaging apparatus includes an imaging optical system that irradiates a fundus of a subject eye with light through an objective lens system, and enables to capture a fundus image of the subject eye based on return light from the subject eye, and a diopter correction unit that includes an optical element disposed on an optical path of the imaging optical system and a drive unit driving the optical element, and performs a diopter correction with a diopter value corresponding to a drive amount of the optical element. A drive range of the optical element in the diopter correction unit is set to avoid a specific range being a range in which an artifact caused by reflection light in the objective lens system is maximized.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20200245858A1
公开(公告)日：2020-08-06
申请号：US16778257
申请日：2020-01-31
Applicant: NIDEK CO., LTD.
Inventor： Naoki Takeno , Ryosuke Shiba , Sohei Miyazaki , Yusuke Sakashita , Yoshiki Kumagai
Abstract: A processor of an ophthalmologic image processing device acquires an ophthalmologic image photographed by an ophthalmologic image photographing device. The processor inputs the ophthalmologic image into a mathematical model trained by a machine learning algorithm to acquire a result of an analysis relating to at least one of a specific disease and a specific structure of a subject eye. The processor acquires information of a distribution of weight relating to an analysis by a mathematical model, as supplemental distribution information, for which an image area of the ophthalmologic image input into the mathematical model is set as a variable. The processor sets a part of the image area of the ophthalmologic image, as an attention area, based on the supplemental distribution information. The processor acquires an image of a tissue including the attention area among a tissue of the subject eye and displays the image on a display unit.
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公开(公告)号：US10674905B2
公开(公告)日：2020-06-09
申请号：US15941902
申请日：2018-03-30
Applicant: NIDEK CO., LTD.
Inventor： Keiji Murata , Yusuke Ando , Sasagu Tachibana
Abstract: An OCT apparatus includes an OCT optical system guiding measurement light to a region including a central portion and a peripheral portion of a fundus, and an image processor processing a spectral interference signal output from the OCT optical system to acquire OCT data of an examinee's eye. The OCT optical system includes a first reference optical path having a path length for obtaining OCT data including the central portion and a second reference optical path having a path length for obtaining OCT data including the peripheral portion. The image processor obtains OCT data including the central portion based on an interference signal between measurement light guided to the central portion and reference light from the first reference optical path, and obtains OCT data including the peripheral portion based on an interference signal between measurement light guided to the peripheral portion and reference light from the second reference optical path.
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公开(公告)号：US20200069175A1
公开(公告)日：2020-03-05
申请号：US16482443
申请日：2018-01-30
Applicant: NIDEK CO., LTD.
Inventor： Yoshiki KUMAGAI , Tomohiro MIYAGI , Sohei MIYAZAKI , Ryosuke SHIBA
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.
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公开(公告)号：US20200037872A1
公开(公告)日：2020-02-06
申请号：US16527527
申请日：2019-07-31
Applicant: NIDEK CO., LTD.
Inventor： Ryosuke SHIBA , Masaaki HANEBUCHI , Naoki TAKENO , Yoshiki KUMAGAI
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.
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公开(公告)号：US20200037869A1
公开(公告)日：2020-02-06
申请号：US16527494
申请日：2019-07-31
Applicant: NIDEK CO., LTD.
Inventor： Yukito HIRAYAMA
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.
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