Patents by Inventor Yasufumi Fukuma

Yasufumi Fukuma 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: 11302006
    Abstract: A machine learning model is trained to identify the texture difference between the different layers of a multilayer object. By training with data in full 3D space, the resulting model is capable of predicting the probability that each pixel in a 3D image belongs to a certain layer. With the resulting probability map, comparing probabilities allows one to determine boundaries between layers, and/or other properties and useful information such as volume data.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: April 12, 2022
    Assignee: Topcon Corporation
    Inventors: Zaixing Mao, Zhenguo Wang, Kinpui Chan, Yasufumi Fukuma
  • Publication number: 20220031159
    Abstract: The object of the present invention is to develop an ophthalmologic microscope of a new method that increases the degree of freedom in the optical design in the Galilean ophthalmologic microscope provided with an OCT optical system. The present invention provides an ophthalmologic microscope, wherein an observation optical system, an objective lens, and an OCT optical system are placed in such a way that the optical axis of the OCT optical system does not penetrate through objective lens, and the optical axis of the observation optical system and the optical axis of the OCT optical system are non-coaxial, and wherein the ophthalmologic microscope further comprises a SLO optical system that scans a light ray which is a visible ray, a near infrared ray, or an infrared ray and guides the light to the subject's eye so as to become substantially coaxial with the optical axis of the OCT optical system.
    Type: Application
    Filed: October 5, 2021
    Publication date: February 3, 2022
    Applicant: Topcon Corporation
    Inventors: Yasufumi FUKUMA, Kazuhiro OOMORI
  • Patent number: 11229355
    Abstract: An OCT imaging method of some exemplary aspects includes acquiring a first three dimensional data set by applying an OCT scan targeting a first three dimensional region of a sample, creating a first two dimensional map based on representative intensity values respectively of a plurality of pieces of A-scan data included in the first three dimensional data set, designating a second three dimensional region of the sample based on the first two dimensional map, acquiring a second three dimensional data set by applying an OCT scan targeting the second three dimensional region, and generating image data from at least part of the second three dimensional data set.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: January 25, 2022
    Assignee: TOPCON CORPORATION
    Inventors: Hisashi Tsukada, Atsushi Kubota, Yasufumi Fukuma
  • Patent number: 11166631
    Abstract: The object of the present invention is to develop an ophthalmologic microscope of a new method that increases the degree of freedom in the optical design in the Galilean ophthalmologic microscope provided with an OCT optical system. The present invention provides an ophthalmologic microscope, wherein an observation optical system, an objective lens, and an OCT optical system are placed in such a way that the optical axis of the OCT optical system does not penetrate through objective lens, and the optical axis of the observation optical system and the optical axis of the OCT optical system are non-coaxial, and wherein the ophthalmologic microscope further comprises a SLO optical system that scans a light ray which is a visible ray, a near infrared ray, or an infrared ray and guides the light to the subject's eye so as to become substantially coaxial with the optical axis of the OCT optical system.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: November 9, 2021
    Assignee: Topcon Corporation
    Inventors: Yasufumi Fukuma, Kazuhiro Oomori
  • Publication number: 20210338076
    Abstract: An ophthalmic apparatus includes an acquiring unit, an OCT unit, an analyzer, and a calculator. The acquiring unit is configured to acquire a dioptric power in a first region including a fovea of a subject's eye. The OCT unit is configured to acquire OCT data of a fundus of the subject's eye using optical coherence tomography. The analyzer is configured to specify a shape of the fundus by analyzing the OCT data. The calculator is configured to calculate a dioptric power in a peripheral region of the first region of the fundus based on the dioptric power in the first region and the shape of the fundus.
    Type: Application
    Filed: July 14, 2021
    Publication date: November 4, 2021
    Applicant: Topcon Corporation
    Inventors: Masashi NAKAJIMA, Jonathan LIU, Yasufumi FUKUMA
  • Publication number: 20210279960
    Abstract: The data set receiving unit 13 of the information processing apparatus 1 of an aspect example receives a data set that includes at least BIM data. The route setting processor 151 sets a route, which is arranged inside and/or outside a virtual building represented by the BIM data, based on the data set received. The virtual image set generating processor 152 generates a virtual image set of the virtual building along the route, based on the received data set and the set route. The inference model creating processor 153 creates an inference model by applying machine learning with training data that includes at least the generated virtual image set to a neural network. The inference model created is used to identify data of a building material from data acquired by measuring a building.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: Topcon Corporation
    Inventors: Yasufumi FUKUMA, Satoshi YANOBE
  • Publication number: 20210256679
    Abstract: The system 1 of an aspect example is used for building photogrammetry. The design data 141 includes virtual material information, which includes virtual material position information, on attributes for each virtual material of a virtual building. The physical material data 142, which includes physical material position data, is generated based on measured data of a physical building constructed based on the design data 141, relates to the attributes for each physical material. The material associating processor 151 generates pairs of virtual and physical materials by determining an association between the virtual and physical materials based on the virtual material position information and the physical material position data. For each of the pairs, the attribute associating processor 152 determines an association between the virtual material information and the physical material data in accordance with the attributes.
    Type: Application
    Filed: February 18, 2021
    Publication date: August 19, 2021
    Applicant: Topcon Corporation
    Inventors: Yasufumi FUKUMA, Mao ZAIXING, Satoshi YANOBE, Toshio YAMADA
  • Publication number: 20210153735
    Abstract: In an ophthalmic system of some embodiments, ophthalmic imaging apparatuses include slit lamp microscopes, and information processing system is connected to each ophthalmic imaging apparatus via a communication path. Each ophthalmic imaging apparatus is configured to acquire a three dimensional image by photographing a subject's eye, and transmit the three dimensional image to the information processing system. The information processing system is configured to receive the three dimensional image, store three dimensional images received, perform machine learning and/or data mining based on the three dimensional images, store knowledge acquired by the machine learning and/or data mining, and generate diagnosis support information by performing inference based on a three dimensional image of a subject's eye transmitted from one of the slit lamp microscopes knowledge stored in the knowledge storage.
    Type: Application
    Filed: February 7, 2018
    Publication date: May 27, 2021
    Applicant: TOPCON CORPORATION
    Inventors: Hisashi TSUKADA, Yasufumi FUKUMA
  • Publication number: 20210153740
    Abstract: A slit lamp microscope of some embodiment examples includes an illumination system, photography system, and movement mechanism. The illumination system projects slit light onto an anterior segment of an eye. The photography system includes an optical system and image sensor. The optical system directs light coming from the anterior segment onto which the slit light is being projected. The image sensor includes a light detecting plane that receives the light directed by the optical system. The movement mechanism moves the illumination and photography systems. The subject plane along the optical axis of the illumination system, the optical system, and the light detecting plane satisfy the Scheimpflug condition. The photography system acquires a plurality of images of the anterior segment by performing repetitive photography in parallel with movement of the illumination and photography systems performed by the movement mechanism.
    Type: Application
    Filed: June 12, 2019
    Publication date: May 27, 2021
    Applicant: Topcon Corporation
    Inventors: Kazuhiro OOMORI, Yasufumi FUKUMA, Hitoshi SHIMIZU
  • Patent number: 11013401
    Abstract: An ophthalmologic apparatus of some exemplary embodiments includes an illumination system, interference photographing system, anterior eye segment photographing system, first optical path coupling element, and controller. The illumination system projects illumination light output from a light source, onto the anterior eye segment of a subject's eye. The interference photographing system performs photographing of an interference pattern formed on the cornea by the illumination light. The anterior eye segment photographing system performs photographing of the anterior eye segment onto which the illumination light is being projected. The first optical path coupling element couples the optical path of the interference photographing system and the optical path of the anterior eye segment photographing system with one another.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: May 25, 2021
    Assignee: TOPCON CORPORATION
    Inventors: Yasufumi Fukuma, Hideharu Suzuki, Zhenguo Wang, Kazuhiro Oomori, Makoto Fujino
  • Publication number: 20210113081
    Abstract: [Problem] The object of the present invention is to provide a microscope including a function expansion optical system in addition to an observation optical system for observing an observation target.
    Type: Application
    Filed: July 9, 2018
    Publication date: April 22, 2021
    Applicant: Topcon Corporation
    Inventors: Yasufumi FUKUMA, Kazuhiro OOMORI, Hisashi TSUKADA
  • Publication number: 20210082116
    Abstract: A machine learning model is trained to identify the texture difference between the different layers of a multilayer object. By training with data in full 3D space, the resulting model is capable of predicting the probability that each pixel in a 3D image belongs to a certain layer. With the resulting probability map, comparing probabilities allows one to determine boundaries between layers, and/or other properties and useful information such as volume data.
    Type: Application
    Filed: November 24, 2020
    Publication date: March 18, 2021
    Inventors: Zaixing Mao, Zhenguo Wang, Kinpui Chan, Yasufumi Fukuma
  • Publication number: 20210068654
    Abstract: [Problem] An object of the present invention is to provide an ophthalmic microscope capable of observing, and acquiring a tomographic image of, an anterior ocular segment and a posterior ocular segment without changing a positional relationship between an objective lens and a subject eye. Another object of the invention is to provide a function expansion unit capable of incorporating, into an ophthalmic microscope of existing specifications, a function capable of observing, and acquiring a tomographic image of, an anterior ocular segment and a posterior ocular segment without changing a positional relationship between an objective lens and a subject eye.
    Type: Application
    Filed: August 28, 2018
    Publication date: March 11, 2021
    Applicant: Topcon Corporation
    Inventors: Yasufumi FUKUMA, Kazuhiro OOMORI
  • Publication number: 20210038076
    Abstract: A slit lamp microscope of an aspect example includes an illumination system, first photographing system, fixation system, movement mechanism, and controller. The illumination system projects slit light onto an anterior segment of a subject's eye from a first direction. The first photographing system photographs the anterior segment onto which the slit light is being projected, from a second direction different from the first direction. The fixation system outputs fixation light for fixation of the subject's eye. The movement mechanism moves the illumination system and the first photographing system. the controller performs a first control for the movement mechanism to move at least the illumination system and a second control for the first photographing system to photograph the anterior segment a plurality of times in parallel with each other while causing the fixation system to output the fixation light.
    Type: Application
    Filed: March 13, 2019
    Publication date: February 11, 2021
    Applicant: TopCon Corporation
    Inventors: Kazuhiro OHMORI, Yasufumi FUKUMA, Satoshi YAMAMOTO
  • Patent number: 10905325
    Abstract: An illumination system of an ophthalmologic apparatus of an exemplary embodiment projects illumination light from a light source onto the anterior eye segment of a subject's eye. An interference photographing system photographs an interference pattern formed on the cornea by the illumination light. An anterior eye segment photographing system photographs the anterior eye segment onto which the illumination light is being projected. A first optical path coupling element couples the optical path of the interference photographing system and the optical path of the anterior eye segment photographing system with one another.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: February 2, 2021
    Assignee: TOPCON CORPORATION
    Inventors: Yasufumi Fukuma, Hideharu Suzuki, Zhenguo Wang, Kazuhiro Oomori, Makoto Fujino
  • Publication number: 20210015363
    Abstract: A slit lamp microscope of some embodiment examples includes an illumination system, first photographing system, first movement mechanism, and controller. The illumination system includes a slit forming unit that forms a slit for generating slit light and projects the slit light onto an anterior segment of a subject's eye from a first direction. The first photographing system photographs the anterior segment onto which the slit light is being projected, from a second direction different from the first direction. The first movement mechanism moves a movable portion that includes at least the slit forming unit. The controller performs a first control for the first movement mechanism to move the movable portion and a second control for the first photographing system to photograph the anterior segment a plurality of times in parallel with each other.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 21, 2021
    Applicant: TOPCON CORPORATION
    Inventors: Kazuhiro OHMORI, Yasufumi FUKUMA, Satoshi YAMAMOTO
  • Publication number: 20210003383
    Abstract: An OCT imaging method of some exemplary aspects includes acquiring a first three dimensional data set by applying an OCT scan targeting a first three dimensional region of a sample, creating a first two dimensional map based on representative intensity values respectively of a plurality of pieces of A-scan data included in the first three dimensional data set, designating a second three dimensional region of the sample based on the first two dimensional map, acquiring a second three dimensional data set by applying an OCT scan targeting the second three dimensional region, and generating image data from at least part of the second three dimensional data set.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 7, 2021
    Applicant: TOPCON CORPORATION
    Inventors: Hisashi TSUKADA, Atsushi KUBOTA, Yasufumi FUKUMA
  • Publication number: 20210000338
    Abstract: An exemplary aspect is a method of processing data acquired by applying an optical coherence tomography (OCT) scan to a sample. The method includes preparing a three dimensional data set acquired from a sample, creating a two dimensional map based on representative intensity values of a plurality of pieces of A-scan data included in the three dimensional data set, placing the three dimensional data set based on the two dimensional map, and executing a process based on at least a partial data set of the three dimensional data set on which placement based on the two dimensional map has been performed.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Applicant: TOPCON CORPORATION
    Inventors: Hisashi TSUKADA, Atsushi KUBOTA, Yasufumi FUKUMA
  • Publication number: 20210004971
    Abstract: An OCT apparatus of an exemplary aspect includes an OCT scanner, image data generating unit, registration unit, and image data composing unit. The OCT scanner is configured to acquire three dimensional data sets by applying an OCT scan to mutually different three dimensional regions of a sample. The image data generating unit is configured to generate a plurality of pieces of image data from the three dimensional data sets. The registration unit is configured to perform a first registration between the plurality of pieces of image data by applying an image correlation calculation to each of overlap regions in the plurality of pieces of image data. The image data composing unit is configured to compose the plurality of pieces of image data based on a result of the first registration.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 7, 2021
    Applicant: TOPCON CORPORATION
    Inventors: Yasufumi FUKUMA, Hisashi TSUKADA, Atsushi KUBOTA
  • Patent number: 10881295
    Abstract: An ophthalmic system of an embodiment includes a slit lamp microscope and an information processing apparatus. The slit lamp microscope includes an image acquisition device that acquires a three dimensional image by photographing a subject's eye, and a first communication device that transmits the three dimensional image to the information processing apparatus. The information processing apparatus includes a second communication device that receives the three dimensional image transmitted by the first communication device, a display controller that displays a first image based on the three dimensional image on a display device, a partial region designation processor that designates a partial region of the first image, and a rendering processor that renders the three dimensional image based on the partial region to construct a second image. The display controller displays the second image on the display device.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 5, 2021
    Assignee: TOPCON CORPORATION
    Inventors: Hisashi Tsukada, Yasufumi Fukuma