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).
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Patent number: 11547294Abstract: An ophthalmic apparatus of an exemplary aspect performs the first and second OCT scans on a subject's eye. The first OCT scan is performed on the first region including the first site of the subject's eye, and the second OCT scan is performed on the second region including the second site. The ophthalmic apparatus acquires the first deviation information of the subject's eye prior to the first OCT scan and performs alignment, and also acquires the second deviation information of the subject's eye prior to the second OCT scan and performs alignment. The ophthalmic apparatus calculates the distance between the first site and the second site based on the first data acquired through the first OCT scan and second data acquired through the second OCT scan.Type: GrantFiled: September 12, 2019Date of Patent: January 10, 2023Assignee: TOPCON CORPORATIONInventors: Yasufumi Fukuma, Takefumi Hayashi, Yoko Tatara
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Publication number: 20230000342Abstract: An ophthalmic apparatus of an exemplary aspect performs the first and second OCT scans on a subject's eye. The first OCT scan is performed on the first region including the first site of the subject's eye, and the second OCT scan is performed on the second region including the second site. The ophthalmic apparatus acquires the first deviation information of the subject's eye prior to the first OCT scan and performs alignment, and also acquires the second deviation information of the subject's eye prior to the second OCT scan and performs alignment. The ophthalmic apparatus calculates the distance between the first site and the second site based on the first data acquired through the first OCT scan and second data acquired through the second OCT scan.Type: ApplicationFiled: September 16, 2022Publication date: January 5, 2023Applicant: TOPCON CORPORATIONInventors: Yasufumi FUKUMA, Takefumi HAYASHI, Yoko TATARA
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Publication number: 20220395175Abstract: In an ophthalmologic apparatus, including: an objective lens that faces a subject's eye; an illumination optical system that irradiates a cornea of the subject's eye with illumination light through the objective lens; and a corneal measurement optical system including an interference image capturing camera that takes an image of a corneal reflection light, which is a reflection of the illumination light reflected from the cornea, through the objective lens, a numerical aperture G of the illumination optical system is larger than a numerical aperture g of the corneal measurement optical system.Type: ApplicationFiled: April 24, 2020Publication date: December 15, 2022Applicant: Topcon CorporationInventors: Yasufumi FUKUMA, Zhenguo WANG, Zaixing MAO, Kazuhiro OOMORI, Makoto FUJINO
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Patent number: 11503996Abstract: 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 1 comprising; an illuminating optical system 300, an observation optical system 400; an objective lens 2; and an OCT optical system 500, characterized in that the optical axis O-500 of the OCT optical system does not penetrate through the objective lens 2, it comprises objective lens for OCT 507 through which the optical axis O-500 of the OCT optical system penetrates, and deflection optical elements 503a, 503b for scanning of the OCT optical system and the objective lens for OCT 507 are in a substantially optically conjugate positional relation.Type: GrantFiled: May 2, 2018Date of Patent: November 22, 2022Assignee: Topcon CorporationInventors: Yasufumi Fukuma, Kazuhiro Oomori
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Publication number: 20220254107Abstract: 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: ApplicationFiled: April 25, 2022Publication date: August 11, 2022Applicant: Topcon CorporationInventors: Yasufumi FUKUMA, Satoshi YANOBE
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Patent number: 11393169Abstract: 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: GrantFiled: March 4, 2021Date of Patent: July 19, 2022Assignee: TOPCON CORPORATIONInventors: Yasufumi Fukuma, Satoshi Yanobe
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Patent number: 11375892Abstract: 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: GrantFiled: June 30, 2020Date of Patent: July 5, 2022Assignee: TOPCON CORPORATIONInventors: Hisashi Tsukada, Atsushi Kubota, Yasufumi Fukuma
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Patent number: 11302006Abstract: 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: GrantFiled: November 24, 2020Date of Patent: April 12, 2022Assignee: Topcon CorporationInventors: Zaixing Mao, Zhenguo Wang, Kinpui Chan, Yasufumi Fukuma
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Publication number: 20220031159Abstract: 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: ApplicationFiled: October 5, 2021Publication date: February 3, 2022Applicant: Topcon CorporationInventors: Yasufumi FUKUMA, Kazuhiro OOMORI
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Patent number: 11229355Abstract: 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: GrantFiled: July 1, 2020Date of Patent: January 25, 2022Assignee: TOPCON CORPORATIONInventors: Hisashi Tsukada, Atsushi Kubota, Yasufumi Fukuma
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Patent number: 11166631Abstract: 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: GrantFiled: May 25, 2018Date of Patent: November 9, 2021Assignee: Topcon CorporationInventors: Yasufumi Fukuma, Kazuhiro Oomori
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Publication number: 20210338076Abstract: 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: ApplicationFiled: July 14, 2021Publication date: November 4, 2021Applicant: Topcon CorporationInventors: Masashi NAKAJIMA, Jonathan LIU, Yasufumi FUKUMA
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Publication number: 20210279960Abstract: 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: ApplicationFiled: March 4, 2021Publication date: September 9, 2021Applicant: Topcon CorporationInventors: Yasufumi FUKUMA, Satoshi YANOBE
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Publication number: 20210256679Abstract: 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: ApplicationFiled: February 18, 2021Publication date: August 19, 2021Applicant: Topcon CorporationInventors: Yasufumi FUKUMA, Mao ZAIXING, Satoshi YANOBE, Toshio YAMADA
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Publication number: 20210153740Abstract: 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: ApplicationFiled: June 12, 2019Publication date: May 27, 2021Applicant: Topcon CorporationInventors: Kazuhiro OOMORI, Yasufumi FUKUMA, Hitoshi SHIMIZU
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Publication number: 20210153735Abstract: 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: ApplicationFiled: February 7, 2018Publication date: May 27, 2021Applicant: TOPCON CORPORATIONInventors: Hisashi TSUKADA, Yasufumi FUKUMA
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Patent number: 11013401Abstract: 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: GrantFiled: November 27, 2018Date of Patent: May 25, 2021Assignee: TOPCON CORPORATIONInventors: Yasufumi Fukuma, Hideharu Suzuki, Zhenguo Wang, Kazuhiro Oomori, Makoto Fujino
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Publication number: 20210113081Abstract: [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: ApplicationFiled: July 9, 2018Publication date: April 22, 2021Applicant: Topcon CorporationInventors: Yasufumi FUKUMA, Kazuhiro OOMORI, Hisashi TSUKADA
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Publication number: 20210082116Abstract: 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: ApplicationFiled: November 24, 2020Publication date: March 18, 2021Inventors: Zaixing Mao, Zhenguo Wang, Kinpui Chan, Yasufumi Fukuma
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Publication number: 20210068654Abstract: [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: ApplicationFiled: August 28, 2018Publication date: March 11, 2021Applicant: Topcon CorporationInventors: Yasufumi FUKUMA, Kazuhiro OOMORI