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公开(公告)号：US20210123734A1
公开(公告)日：2021-04-29
申请号：US17062879
申请日：2020-10-05
Applicant: TOPCON Corporation
Inventor： Taichi Yuasa
IPC: G01C15/00 , G01S7/481 , G01S17/10 , G01S7/4865
Abstract: A surveying instrument including a light projecting optical system which projects the distance measuring light, a light receiving optical system which receives the reflected distance measuring light from an object, a frame unit 5 which horizontally rotates around a horizontal rotation shaft, a scanning mirror which is provided in the frame unit, vertically rotates, a horizontal angle detector which detects a horizontal angle of the frame unit, a vertical angle detector which detects a vertical angle of the scanning mirror and an arithmetic control module which calculates the three-dimensional coordinates of the object, in which the light receiving optical system has a reflecting mirror having a reflecting surface which is an off-axis paraboloidal surface or an off-axis free-form surface, and the reflected distance measuring light is configured to be led to a light receiving module by the reflecting mirror while being condensed.
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公开(公告)号：US20210096252A1
公开(公告)日：2021-04-01
申请号：US17023416
申请日：2020-09-17
Applicant: Topcon Corporation
Inventor： You SASAKI
IPC: G01S17/50 , G06T17/00 , G01S17/894 , E21B47/09 , E21B47/04
Abstract: A technique enables easy quantitative evaluation for drilling operations. A civil engineering work data processing device includes a positioning data receiving unit, a three-dimensional model estimating unit, and a drilled depth calculator. The positioning data receiving unit receives positioning data obtained by performing positioning using laser light, on a drilling rod. The three-dimensional model estimating unit estimates a three-dimensional model of the drilling rod, on the basis of the positioning data. The drilled depth calculator calculates a depth of a hole generated in a civil engineering work target by the drilling rod, on the basis of the estimated three-dimensional model.
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公开(公告)号：US20210093191A1
公开(公告)日：2021-04-01
申请号：US16608209
申请日：2018-02-07
Applicant: TOPCON CORPORATION
Inventor： Hirokazu ONJI
Abstract: In an ophthalmological device, a memory stores a three dimensional data set acquired by applying OCT to a subject's eye. A fourth color coding unit assigns color information according to a depth position to the three dimensional data set. A fourth layer region identifying unit identifies layer regions by applying segmentation to the three dimensional data set, A fourth blood vessel region extracting unit extracts a blood vessel region from each of the layer regions identified. A fourth front image constructing unit constructs a front image based on each of the blood vessel regions extracted. A fourth image composing unit composes at least two of the front images constructed based on the color information, to construct a composite front image.
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114.发明申请公开(公告)号：US20210080577A1
公开(公告)日：2021-03-18
申请号：US17017719
申请日：2020-09-11
Applicant: Topcon Corporation
Inventor： Tadayuki ITO , Yoshihiro NISHI , Motohiro MIYAJIMA
Abstract: A three-dimensional survey apparatus includes a collimating ranging unit, a scanner unit, and a control calculation portion. The control calculation portion executes control to acquire, based on a survey result of the collimating ranging unit, three-dimensional data related to a characteristic portion of the measurement object which is present between a plurality of pieces of three-dimensional data that are included in point cloud data having been acquired by the scanner unit and of which the three-dimensional data has not been acquired by the scanner unit, and to add the three-dimensional data related to the characteristic portion of the measurement object having been acquired based on a survey result of the collimating ranging unit to the point cloud data having been acquired by the scanner unit.
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公开(公告)号：US20210068654A1
公开(公告)日：2021-03-11
申请号：US16642052
申请日：2018-08-28
Applicant: Topcon Corporation
Inventor： Yasufumi FUKUMA , Kazuhiro OOMORI
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.
[Solution] There is provided an ophthalmic microscope including an observation optical system having a first focal point in front of a subject eye; an objective auxiliary lens capable of being set in a position on the subject eye side of an objective lens in the observation optical system or capable of being released from the position, a focal point at a time when the objective auxiliary lens is set being set to a second focal point which is an anterior ocular segment position of the subject eye; and a front lens capable of being set in a position further toward the subject eye side than the first focal point or capable of being released from the position, a focal point through the crystalline lens of the subject eye at a time when the front lens is set being set to a third focal point which is a posterior ocular segment position of the subject eye, the objective auxiliary lens being set and the front lens being released during anterior ocular segment observation, and the front lens being set and the objective auxiliary lens being released during posterior ocular segment observation, without changing a positional relationship between the objective lens and the subject eye.-
Patent Agency Ranking
公开(公告)号：US10914454B2
公开(公告)日：2021-02-09
申请号：US16817098
申请日：2020-03-12
Applicant: TOPCON CORPORATION
Inventor： Akinobu Sugiura
Abstract: A guide light irradiation device to irradiate guide light to indicate a direction to a survey operator, includes a plurality of irradiators configured to each irradiate guide light differing in pattern between the left and the right of an irradiation direction as a center, the plurality of irradiators are juxtaposed in a left-right direction, and irradiation units of the plurality of irradiators are disposed so that the irradiation units match in the horizontal direction, and optical axes of the plurality of irradiators make a predetermined angle with each other in the vertical direction. Synthetic light of the respective guide lights has brightness obtained by summing brightnesses of the light sources of the respective irradiators, and has a fan shape extending in the vertical direction. A distance at which the light is visually recognized is long, and the guide light is easily found even at a location with level differences.
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公开(公告)号：US10905325B2
公开(公告)日：2021-02-02
申请号：US16200687
申请日：2018-11-27
Applicant: Topcon Corporation
Inventor： Yasufumi Fukuma , Hideharu Suzuki , Zhenguo Wang , Kazuhiro Oomori , Makoto Fujino
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. A controller controls a display device to display an observation interference image that is at least part of an interference image acquired by the interference photographing system and an anterior eye segment image acquired by the anterior eye segment photographing system together with each other, and controls the display device to display observation location information indicating a location of the observation interference image in the anterior eye segment image.
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公开(公告)号：US20210025707A1
公开(公告)日：2021-01-28
申请号：US16935359
申请日：2020-07-22
Applicant: TOPCON Corporation
Inventor： Nobuyuki Nishita
Abstract: A surveying system includes a distance measuring unit for performing the distance measurement based on the distance measuring light, an optical axis deflector configured to enable two-dimensionally deflecting the optical axis of the distance measuring light, a projecting direction detecting module for performing the angle measurement of the optical axis of the distance measuring light, and an arithmetic control module performs captures the pole by a scan pattern having a predetermined shape, acquires the point cloud data of at least two positions where the scan pattern crosses the pole, calculates an axis of the pole, calculates a direction vector, performs a linear scan along the direction vector, determines as a measuring point a point where an intersection of the optical axis of the distance measuring light and the direction vector coincides or substantially coincides with a measurement result, and calculates the three-dimensional coordinates of the measuring point.
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公开(公告)号：US10893796B2
公开(公告)日：2021-01-19
申请号：US16252818
申请日：2019-01-21
Applicant: Topcon Corporation
Inventor： Zhenguo Wang , Zaixing Mao , Kinpui Chan
Abstract: A method for measuring layer thicknesses of a multi-layer structure includes generating first and second 2D images of the structure, each image being generated by measuring an intensity of a reflection of incident lights, from different discrete narrow spectral bands, on the structure. Thicknesses for at least one layer of the structure are then determined based on the measured reflection intensities at those locations.
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公开(公告)号：US20210004971A1
公开(公告)日：2021-01-07
申请号：US16917925
申请日：2020-07-01
Applicant: TOPCON CORPORATION
Inventor： Yasufumi FUKUMA , Hisashi TSUKADA , Atsushi KUBOTA
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.
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