Patents Assigned to Nidek Co., Ltd.
  • Publication number: 20190313894
    Abstract: An OCT motion contrast data analysis apparatus includes: a processor; and memory storing computer readable instructions, when executed by the processor, causing the OCT motion contrast data analysis apparatus to execute: acquiring OCT motion contrast data of a subject by an optical coherence tomography; and performing an analysis process with respect to the OCT motion contrast data based on an analysis chart set on image data different from the OCT motion contrast data.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Applicant: NIDEK CO., LTD.
    Inventors: Tetsuya Kano, Ryosuke Shiba, Kazuki Okada
  • Publication number: 20190282091
    Abstract: An observation system includes an observation optical system, an imaging device, an observation focus adjustment unit, a detector, and a processor. The observation optical system guides an observation luminous flux from a biological object being an observation target. The imaging device captures an observation image of the biological object, by receiving the observation luminous flux guided by the observation optical system. The observation focus adjustment unit adjusts a focus of the observation optical system. The detector detects at least one of a direction of a line of sight of the user, voice generated by the user, or a gesture of the user. The processor causes the observation image to be displayed on a display, and adjusts a focus of a target region concentrated on by the user in the observation image, by driving the observation focus adjustment unit based on a detection result by the detector.
    Type: Application
    Filed: June 5, 2019
    Publication date: September 19, 2019
    Applicant: NIDEK CO., LTD.
    Inventor: Go MATSUNOBU
  • Publication number: 20190274541
    Abstract: An OCT data processing device includes a processor that performs acquiring three-dimensional OCT data. The three-dimensional OCT data is OCT data of a tissue of a subject's eye acquired by an OCT device and is obtained by irradiating measurement light on a two-dimensional measurement region. The two-dimensional measurement region extends in a direction intersecting an optical axis of the measurement light. The processor further preforms setting a line pattern, from among a plurality of types of line pattern, with respect to the two-dimensional measurement region for which the three-dimensional OCT data is obtained, at least one of an arrangement, a number, or a shape of one or more lines being different for the plurality of types of line pattern, and extracting, from the three-dimensional OCT data, a two-dimensional tomographic image of a cross section intersecting each of the one or more lines of the set line pattern.
    Type: Application
    Filed: February 21, 2019
    Publication date: September 12, 2019
    Applicant: NIDEK CO., LTD.
    Inventors: Yukihiro HIGUCHI, Tetsuya KANO, Ryosuke SHIBA
  • Patent number: 10405741
    Abstract: In an optometry apparatus controller provided in an electric optometry apparatus including an optical element disposed in front of an examinee's eye and a switch mechanism that electrically switches the optical element, for instructing the switching of the optical element, the controller includes a touchscreen configured to display an operation screen for operating the electric optometry apparatus main body, displays, as the operation screen, a graphic image of a manual optometry apparatus as viewed from an operator side, the manual optometry apparatus including a plurality of operating units and being configured to switch the optical element disposed in front of the eye by an operation with respect to the operating units, and outputs a control signal to the electric optometry apparatus main body based on a touch input with respect to the graphic image on the touchscreen.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: September 10, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Tomoyuki Sugiura, Yuichiro Kanazawa
  • Publication number: 20190269318
    Abstract: A subjective optometry apparatus includes a light projecting optical system that has a visual target presenting portion for emitting a target light flux and projects a target light flux emitted from the visual target presenting portion toward a subject eye, a calibration portion that is disposed in an optical path of the light projecting optical system and changes optical characteristics of the target light flux, an acquisition portion that acquires a near distance objective eye refractive power that is an eye refractive power of the subject eye objectively measured in a near distance viewing state, and a control portion that controls an operation for acquiring a near distance subjective eye refractive power that is a subjective eye refractive power of the subject eye measured in a near distance viewing state, based on the near distance objective eye refractive power.
    Type: Application
    Filed: February 22, 2019
    Publication date: September 5, 2019
    Applicant: NIDEK CO., LTD.
    Inventors: Michihiro TAKII, Hirohisa TERABE
  • Publication number: 20190269319
    Abstract: An ophthalmological image processing apparatus includes an image obtaining portion for obtaining ophthalmological image data, which is captured by an imaging unit, of a subject eye, and an image processing portion for processing the ophthalmological image data. The image processing portion uses a first front image of the subject eye in a first depth region to correct a second front image of the subject eye captured in a second depth region which is different from the first depth region. The first front image and the second front image are constructed based on the ophthalmological image data. The ophthalmological image processing apparatus can reduce an artifact which is generated in an ophthalmological image.
    Type: Application
    Filed: February 22, 2019
    Publication date: September 5, 2019
    Applicant: NIDEK Co., Ltd.
    Inventors: Ryosuke Shiba, Tetsuya Kano, Naoki Takeno
  • Patent number: 10377011
    Abstract: There is provided an eyeglass lens processing apparatus including a first rotational shaft which holds and rotates an eyeglass lens, a finishing tool, a chamfering tool which performs chamfering on an angular portion of an edge of the eyeglass lens, a second rotational shaft to which the chamfering tool is attached, an adjustment unit which adjusts a relative positional relationship between the first rotational shaft and the second rotational shaft, a chamfering angle setting portion which sets a chamfering angle formed between a rotational center axis of the first rotational shaft and a processing tool surface, an edge information acquisition portion which acquires information regarding an edge surface shape of the eyeglass lens, an angle correction portion which corrects the chamfering angle based on the information regarding the edge surface shape, and a control portion which controls the adjustment unit and performs chamfering based on the corrected chamfering angle.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: August 13, 2019
    Assignee: NIDEK CO., LTD.
    Inventor: Hirokatsu Obayashi
  • Patent number: 10368736
    Abstract: An OCT motion contrast data analysis apparatus includes: a processor; and memory storing computer readable instructions, when executed by the processor, causing the OCT motion contrast data analysis apparatus to execute: acquiring OCT motion contrast data of a subject by an optical coherence tomography; and performing an analysis process with respect to the OCT motion contrast data based on an analysis chart set on image data different from the OCT motion contrast data.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 6, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Tetsuya Kano, Ryosuke Shiba, Kazuki Okada
  • Patent number: 10363172
    Abstract: An ophthalmic laser treatment apparatus includes: an aiming optical system configured to irradiate an aiming beam to a patient's eye; a laser irradiation optical system configured to irradiate a laser beam for treatment to the patient's eye; a shift unit configured to make a shift of a focus shift position corresponding to a focus position of the laser beam to a posterior or anterior position with respect to a focus position of the aiming beam; a selection receiving unit configured to receive an instruction to select any one of a plurality of treatment modes; and a control unit configured to control operations of the ophthalmic laser treatment apparatus. The control unit sets a value of a parameter related to irradiation of the laser beam, the parameter including a parameter related to the shift of the focus shift position, according to the treatment mode selected with the selection receiving unit.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: July 30, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Masato Kawai, Seiki Tomita
  • Patent number: 10357397
    Abstract: A laser treatment apparatus configured to emit laser light onto a tissue of a patient's eye, the laser treatment apparatus includes: a laser scanner configured to scan laser light emitted from a laser light source and switch a position of the tissue onto which laser light is emitted; a processor; and memory storing computer readable instructions, which are executed by the processor, causing the laser treatment apparatus to: (a) emit the laser light onto a first spot; (b) stop emitting the laser light onto the first spot for a stop time; (c) emit the laser light onto at least one second spot other than the first spot during the stop time; (d) emit the laser light onto the first spot again after the stop time elapses; and repeat (b), (c) and (d) several times to execute intermittent irradiation treatment onto a plurality of spots multiple times.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: July 23, 2019
    Assignee: NIDEK CO., LTD.
    Inventor: Hitoshi Abe
  • Patent number: 10299672
    Abstract: A subjective optometric apparatus includes: a projection optical system that includes a target presenting unit configured to emit a target light flux, the projection optical system being configured to project, onto an examinee's eye, the target light flux emitted from the target presenting unit; a housing configured to accommodate the projection optical system; a presentation window configured to project the target light flux onto the examinee's eye by transmitting the target light flux emitted from the projection optical system and outputting the target light flux from an inside of the housing to an outside of the housing; and an observation unit configured to observe, via the presentation window, a positional relationship between the examinee's eye and an eye refractivity measuring unit configured to change an optical property of the target light flux output from the inside of the housing to the outside of the housing.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 28, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Kazunori Shibata, Ryoji Suzuki, Yukito Hirayama, Hidenori Kanda
  • Publication number: 20190150735
    Abstract: An ophthalmic apparatus to examine an examinee's eye includes: a first optometry unit to perform a first examination of the examinee's eye; a second optometry unit to perform a second examination of the examinee's eye; a drive unit to cause relative movement of the first and second optometry units in three-dimensional manner relative to the examinee's eye; a controller to control the drive unit; a selection receiving unit to receive a selection signal representing at least one selected from the first second examinations; and a face photographing unit to photograph a face image including at least one of examinee's right and left eyes. The controller switches, according to the selection signal, between a first path for alignment of the first optometry unit with the eye detected from the face image and a second path for alignment of the second optometry unit with the eye detected from the face image.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 23, 2019
    Applicant: NIDEK CO., LTD.
    Inventors: Kazunari SHIMIZU, Kenji NAKAMURA, Toru ARIKAWA
  • Publication number: 20190150726
    Abstract: The method of creating and processing a color image of an iridocorneal region of an eye includes the preliminary step of calibrating a pair of a color image detector device and a color illuminator device; and the examination steps of: detecting the color image through the detector device including a bi-dimensional array of pixels, wherein the color image is in a color space defined by three color dimensions, selecting a sub-image within the detected image corresponding to a region of interest, computing a statistic parameter of the selected sub-image, wherein the statistic parameter is selected from the group including an average value, a variance value, a minimum value, a maximum value, a skewness value, a kurtosis index value, a distribution, and a distribution gradient of a color component, determining an indicator based on the statistic parameter through a statistical classifier, and providing the indicator as an examination result.
    Type: Application
    Filed: April 27, 2017
    Publication date: May 23, 2019
    Applicants: Nidek Technologies S.r.l., Nidek Co., Ltd.
    Inventors: Andrea DE GIUSTI, Simone PAJARO
  • Patent number: 10285581
    Abstract: An ophthalmologic information processing apparatus for performing follow-up of a subject eye based on plural pieces of OCT data obtained at different dates includes: a processor; and memory storing computer readable instructions, when executed by the processor, causing the ophthalmologic information processing apparatus to execute: a first acquisition process of acquiring plural pieces of layer thickness information regarding a fundus, the plural pieces of layer thickness information being a processing result of the plural pieces of OCT data of the subject eye; a matching process of matching the pieces of layer thickness information based on the plural pieces of OCT data to each other in consideration of a difference in acquisition condition among the pieces of OCT data; and a display control process of displaying results of the matching of the pieces of layer thickness information on a monitor.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: May 14, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Hisanari Torii, Norimasa Satake
  • Publication number: 20190125178
    Abstract: An ophthalmic imaging device includes a first optical system, a second optical system, and a wavelength splitting member. The first optical system irradiates light whose center wavelength is a first wavelength region being an infrared region. The first optical system includes an optical coherence tomography unit and an imaging element. The second optical system irradiates light whose center wavelength is in a second wavelength region. A wavelength of the second wavelength region is shorter than a wavelength of the first wavelength region. The second optical system includes a fixation light source and a short wavelength optical system. The wavelength splitting member is disposed on a common optical path of the measuring light, an anterior ocular segment photographing light, a fixation light, and a short wavelength light. The wavelength splitting member divides the common optical path into a first optical path and a second optical path.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 2, 2019
    Applicant: NIDEK CO., LTD.
    Inventor: Keiji MURATA
  • Publication number: 20190118498
    Abstract: A spectacle lens processing device includes a drilling tool and a processor. The processor acquires a position of a hole formed in a lens and a pantoscopic angle. The pantoscopic angle is an angle in a vertical plane between a visual axis of a user and an optical axis of the lens when the user wears spectacles in which the lens after processing is mounted and faces forward. The processor determines, based on the acquired pantoscopic angle, a relative angle between the drilling tool and the lens when the hole is formed in the lens in the position of the hole.
    Type: Application
    Filed: December 14, 2018
    Publication date: April 25, 2019
    Applicant: NIDEK CO., LTD.
    Inventors: Yuji KANDA, Kyoji TAKEICHI, Hirohisa MIZUNO
  • Patent number: 10264967
    Abstract: A subjective optometry apparatus includes subjective measurement unit for subjectively measuring an optical characteristic of a subject eye, the subjective measurement unit including a calibration optical system that is disposed in an optical path of a light projecting optical system projecting a visual target luminous flux toward the subject eye and changes an optical characteristic of the visual target luminous flux. The subjective optometry apparatus includes objective measurement unit for objectively measuring the optical characteristic of the subject eye, the objective measurement unit including a measurement optical system that emits measurement light to a fundus of the subject eye and receives reflected light of the measurement light.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: April 23, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Michihiro Takii, Masaaki Hanebuchi, Noriji Kawai
  • Patent number: 10251551
    Abstract: A fundus analysis device includes: a first database which stores layer thickness information of fundus relating to a plurality of eyes having respective long ocular axial lengths; a processor; and memory storing non-transitory computer readable instructions, when executed by the processor, causing the fundus analysis device to execute: an acquisition instruction of acquiring a tomographic image of a fundus of an examinee's eye by an optical coherence tomography device; and an analysis processing instruction of acquiring analysis information relating to layer thickness information of the fundus of the examinee's eye by referring to the first database.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: April 9, 2019
    Assignee: NIDEK CO., LTD.
    Inventors: Ai Yamakawa, Hisanari Torii, Norimasa Satake, Tetsuya Kano, Ryoichi Aihara
  • Publication number: 20190099074
    Abstract: An OCT apparatus includes an OCT optical system that splits light from an OCT light source into a measurement optical path and a reference optical path and detects a spectral interference signal between measurement light and reference light, an image processor that processes the spectral interference signal to acquire OCT data of an examinee's eye, an optical scanner that deflects the measurement light and performs scanning on tissue of the examinee's eye, and a light guiding optical system that includes an objective optical system curving a concentrating plane such that the concentrating plane has a convex shape toward a side of a fundus, and forms the concentrating plane of the measurement light in an anterior chamber.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Applicant: NIDEK CO., LTD.
    Inventor: Keiji MURATA
  • Publication number: 20190099072
    Abstract: An ophthalmic device includes an anterior ocular segment photographing unit, a fixation target display unit, and a processor. The anterior ocular segment photographing unit captures an anterior ocular segment image of at least one of a left eye and a right eye of a subject. The fixation target display unit displays a fixation target with respect to the at least one of the left eye and the right eye of the subject. The processor measures an eye position of the at least one of the left eye and the right eye of the subject by processing the anterior ocular segment image captured by the anterior ocular segment photographing unit. The processor generates eye position state information, which indicates a state of the eye position of the subject, based on measurement results of the eye position at least two timings including a post-switch timing and a pre-switch timing.
    Type: Application
    Filed: September 25, 2018
    Publication date: April 4, 2019
    Applicant: NIDEK CO., LTD.
    Inventors: Michihiro TAKII, Sasagu TACHIBANA, Masaki TANAKA, Yujiro TOCHIKUBO