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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US2020081266A1
Surveying Instrument
Publication/Patent Number: US2020081266A1 Publication Date: 2020-03-12 Application Number: 16/565,708 Filing Date: 2019-09-10 Inventor: Ohtomo, Fumio   Kumagai, Kaoru   Anai, Tetsuji   Assignee: TOPCON Corporation   IPC: G02B27/64 Abstract: A surveying instrument comprises a distance measuring unit configured to measure a distance to an object to be measured, an optical axis deflector configured to deflect a distance measuring light, a measuring direction image pickup module configured to acquires an observation image and an arithmetic control module, wherein the arithmetic control module is configured to continuously cut out sighting images around a tracking point set in the observation image, to set a first cutout sighting image as a reference sighting image, to calculate a movement amount of the sighting image with respect to the reference sighting image by an image matching of the reference sighting image and the sighting image and to control the optical axis deflector based on a calculation result in such a manner that the tracking point is positioned at a center of the sighting image.
2 US2020077889A1
Ophthalmologic Microscope And Function Expansion Unit
Publication/Patent Number: US2020077889A1 Publication Date: 2020-03-12 Application Number: 16/616,564 Filing Date: 2018-05-25 Inventor: Fukuma, Yasufumi   Oomori, Kazuhiro   Assignee: Topcon Corporation   IPC: A61B3/135 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 1, wherein an observation optical system 400, an objective lens 2, and an OCT optical system 500 are placed in such a way that the optical axis of the OCT optical system O-500 does not penetrate through objective lens 2, and the optical axis of the observation optical system O-400 and the optical axis of the OCT optical system O-500 are non-coaxial, and wherein the ophthalmologic microscope further comprises a SLO optical system 1500 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 O-500.
3 US2020196856A1
METHOD AND APPARATUS FOR LOW COHERENCE INTERFEROMETRY
Publication/Patent Number: US2020196856A1 Publication Date: 2020-06-25 Application Number: 16/719,305 Filing Date: 2019-12-18 Inventor: Kim, Jongsik   Dong, Ying   Mei, Song   Chan, Kinpui   Wang, Zhenguo   Mao, Zaixing   Assignee: Topcon Corporation   IPC: A61B3/10 Abstract: A low coherence imaging method comprises acquiring image data of an object with an interferometric imaging system, where the image data is from a location of the object at first and second times; determining a first depth profile from the image data from the location at the first time and a second depth profile from the image data of the location at the second time; determining a change with respect to depth between the first and second depth profiles; and determining a property, or identifying a location, of at least one dynamic particle in the object based on the change between the first and second depth profiles. The method is able to identify, analyze, and/or visualize dynamic particles with features comparable to at least fluorescein angiography, indocyanine green angiography, confocal scanning laser fluorescein angiography, confocal scanning laser indocyanine green angiography, and fluorescence microscopy images, without the use of a dye.
4 US2020163548A1
OPHTHALMOLOGIC APPARATUS
Publication/Patent Number: US2020163548A1 Publication Date: 2020-05-28 Application Number: 16/200,687 Filing Date: 2018-11-27 Inventor: Fukuma, Yasufumi   Suzuki, Hideharu   Wang, Zhenguo   Oomori, Kazuhiro   Fujino, Makoto   Assignee: Topcon Corporation   IPC: A61B3/15 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.
5 US2020163545A1
OPHTHALMOLOGIC APPARATUS
Publication/Patent Number: US2020163545A1 Publication Date: 2020-05-28 Application Number: 16/200,676 Filing Date: 2018-11-27 Inventor: Fukuma, Yasufumi   Suzuki, Hideharu   Wang, Zhenguo   Oomori, Kazuhiro   Fujino, Makoto   Assignee: Topcon Corporation   IPC: A61B3/10 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. The controller controls a display device to display an interference image acquired by the interference photographing system, over an anterior eye segment image acquired by the anterior eye segment photographing system.
6 US2020141729A1
Target Instrument And Surveying System
Publication/Patent Number: US2020141729A1 Publication Date: 2020-05-07 Application Number: 16/558,574 Filing Date: 2019-09-03 Inventor: Nishita, Nobuyuki   Assignee: TOPCON Corporation   IPC: G01C15/00 Abstract: A surveying system comprises a laser scanner for scanning a distance measuring light and for acquiring point cloud data and a target instrument having a target for reflecting the distance measuring light, wherein the target is a sphere having a known diameter, the laser scanner comprises a distance measuring module for projecting the distance measuring light, for receiving a reflected distance measuring light and for performing a distance measurement, an optical axis deflector which enables to two-dimensionally deflect the distance measuring light, and an arithmetic control module for controlling the optical axis deflector, and wherein the arithmetic control module is configured to perform a circular scan on a surface of the target by the optical axis deflector, to obtain a center of the target based on the point cloud data acquired by the circular scan and the diameter, and to measure a distance of the center of the target.
7 US2020313124A1
Battery Holder
Publication/Patent Number: US2020313124A1 Publication Date: 2020-10-01 Application Number: 16/819,611 Filing Date: 2020-03-16 Inventor: Kaneko, Shinsuke   Assignee: TOPCON Corporation   IPC: H01M2/10 Abstract: In a battery holder for mounting a battery in a surveying instrument, the battery comprises contacts on a front end surface and attachment grooves formed on both side surfaces along a lower surface thereof, wherein the battery holder comprises a flange part and a battery case which extends from the flange part, wherein the battery case comprises locking pieces which are formed like a cantilever at positions corresponding to the attachment grooves on both side surfaces respectively, wherein, by fitting the battery in the battery case, the locking pieces engage with the attachment grooves through an elastic displacement, and the locking pieces hold the battery in the battery case, and wherein, by inserting the battery holder into a power supply unit storage of the surveying instrument, the locking pieces abut on a member on the power supply unit storage side, and the elastic displacement of the locking pieces is restrained.
8 US10687462B2
Fertilization amount information management device, method for controlling fertilization amount information management device, and fertilization amount information management program
Publication/Patent Number: US10687462B2 Publication Date: 2020-06-23 Application Number: 15/705,554 Filing Date: 2017-09-15 Inventor: Tomizawa, Ryosuke   Hanya, Issei   Shu, Shinkai   Assignee: Topcon Corporation   IPC: A01C21/00 Abstract: A fertilization amount information management device and the like are provided with which a manager of a farm field or the like can be free of cumbersome operation of drafting fertilization amount plans for entire farm fields and with which a dedicated fertilization amount plan tailored for an actual condition of each farm field can be drafted. A fertilization amount information management device 10 includes a display unit. Fertilization amount plan information 56 on each of farm field portions that are portions of a farm field is generated based on measured growth information 24 that is growth information on a measured plant and is displayed on the display unit 16. Corrected fertilization amount plan information 65 indicating correction needed for each of the farm field portions is able to be input based on the fertilization amount plan information for each farm field displayed on the display unit.
9 EP3616601A1
OPHTHALMOLOGICAL DEVICE
Publication/Patent Number: EP3616601A1 Publication Date: 2020-03-04 Application Number: 18791207.6 Filing Date: 2018-02-07 Inventor: Onji, Hirokazu   Assignee: Topcon Corporation   IPC: A61B3/10 Abstract: Provided is an ophthalmological device with which it is possible to clearly detect the three-dimensional distribution of blood vessels in an eye. In an ophthalmological device of an exemplary embodiment, a storage unit stores a three-dimensional data set acquired by applying optical coherence tomography to a subject's eye. A first blood vessel region extraction unit extracts a blood vessel region from the three-dimensional data set. A first layer region specification unit applies segmentation to the three-dimensional data set and specifies a plurality of layer regions. A first common region specification unit specifies common regions between each of the layer regions and the blood vessel region. A first en face image formation unit forms en face images on the basis of each of the common regions. A first color coding unit assigns different color information to the plurality of en face images formed by the first en face image formation unit. A first image compositing unit forms a composite en face image by compositing at least two of the plurality of en face images whereto the color information is assigned.
10 EP3588446A3
POINT CLOUD COLORIZATION WITH OCCLUSION DETECTION
Publication/Patent Number: EP3588446A3 Publication Date: 2020-04-08 Application Number: 19175933.1 Filing Date: 2019-05-22 Inventor: Morikawa, Naoki   Assignee: Topcon Corporation   IPC: G06T17/00 Abstract: Systems and methods are described for colorizing a point cloud comprising a set of point cloud data points associated with a particular object using a plurality of candidate images. For each respective data point in the set of point cloud data points, an image is selected, from a subset of the plurality of candidate images that include an un-occluded point of the particular object corresponding to the respective data point, that has a shortest subject distance to the un-occluded point of the particular object. The respective data point is colorized based on a color in the selected image of the un-occluded point of the particular object corresponding to the respective data point.
11 EP3683766A1
OPHTHALMOLOGIC INFORMATION PROCESSING APPARATUS, OPHTHALMOLOGIC APPARATUS, OPHTHALMOLOGIC INFORMATION PROCESSING METHOD, AND PROGRAM
Publication/Patent Number: EP3683766A1 Publication Date: 2020-07-22 Application Number: 19219987.5 Filing Date: 2019-12-30 Inventor: Mino, Toshihiro   Liu, Jonathan   Assignee: Topcon Corporation   IPC: G06T7/00 Abstract: An ophthalmologic information processing apparatus includes an acquisition unit, a tissue specifying unit, and a specifying unit. The acquisition unit is configured to acquire a tomographic image of a subject's eye formed based on scan data acquired using an optical system for performing optical coherence tomography on the subject's eye. The tissue specifying unit is configured to acquire first shape data representing shape of a tissue of the subject's eye by performing segmentation processing on the tomographic image. The specifying unit is configured to specify a low sensitivity component having a small variation with respect to a change in a position of the optical system with respect to the subject's eye from the first shape data, and to obtain second shape data representing shape of the tissue based on the specified low sensitivity component.
12 EP3671110A1
METHOD AND APPARATUS FOR LOW COHERENCE INTERFEROMETRY
Publication/Patent Number: EP3671110A1 Publication Date: 2020-06-24 Application Number: 19218145.1 Filing Date: 2019-12-19 Inventor: Kim, Jongsik   Dong, Ying   Mei, Song   Chan, Kinpui   Wang, Zhenguo   Mao, Zaixing   Assignee: Topcon Corporation   IPC: G01B9/02 Abstract: A low coherence imaging method comprises acquiring image data of an object with an interferometric imaging system, where the image data is from a location of the object at first and second times; determining a first depth profile from the image data from the location at the first time and a second depth profile from the image data of the location at the second time; determining a change with respect to depth between the first and second depth profiles; and determining a property, or identifying a location, of at least one dynamic particle in the object based on the change between the first and second depth profiles. The method is able to identify, analyze, and/or visualize dynamic particles with features comparable to at least fluorescein angiography, indocyanine green angiography, confocal scanning laser fluorescein angiography, confocal scanning laser indocyanine green angiography, and fluorescence microscopy images, without the use of a dye.
13 EP3692891A1
OPHTHALMOLOGIC APPARATUS
Publication/Patent Number: EP3692891A1 Publication Date: 2020-08-12 Application Number: 20155606.5 Filing Date: 2020-02-05 Inventor: Yukimori, Takafumi   Okikawa, Shigeru   Assignee: Topcon Corporation   IPC: A61B3/11 Abstract: An ophthalmologic apparatus (10) comprises eye information obtaining portions (21), each of the eye information obtaining portions (21) corresponding to each of subject eyes (E) of a subject and configured to obtain information on each of the subject eyes (E); imaging portions (27), each of the imaging portions (27) corresponding to each of the eye information obtaining portions (21) and configured to capture a subject eye image (IE) of each of the subject eyes (E); a reference calculator (28b) configured to obtain a three-dimensional reference position (Pb) in each of the subject eye images (IE) captured by each of the imaging portions (27); an inclination calculator (28c) configured to obtain inclination information (Is) indicating inclination of relative positions of the subject eyes (E) from the obtained three-dimensional reference positions (Pb) in the subject eye images (IE); and a notification portion (35) configured to notify the obtained inclination information (Is).
14 US202003558A1
SURVEY SYSTEM AND METHOD FOR IDENTIFYING TARGET
Publication/Patent Number: US202003558A1 Publication Date: 2020-01-02 Application Number: 20/191,645 Filing Date: 2019-06-26 Inventor: Nishita, Nobuyuki   Assignee: Topcon Corporation   IPC: G01C15/00 Abstract: A survey system includes a survey device and a target. The survey device includes a main body rotatable around a vertical axis, a telescope supported by the main body and rotatable around a horizontal axis, a wide angle imaging unit having a second angle of view wider than a first angle of view of the telescope, and a target identification unit configured to identify a target image. The target image is identified based on a differential image between a first image captured by the wide angle imaging unit during an on-period with laser light emitted from an emission unit and a second image captured during an off-period in which laser light is not emitted from the emission unit. The target image is quickly identified even when the target is significantly separated in the horizontal direction from a position directly in front of the survey device.
15 EP3530176B1
3D QUANTITATIVE ANALYSIS OF RETINAL LAYERS WITH DEEP LEARNING
Publication/Patent Number: EP3530176B1 Publication Date: 2020-11-04 Application Number: 19158556.1 Filing Date: 2019-02-21 Inventor: Zaixing, Mao   Zhenguo, Wang   Kinpui, Chan   Yasufumi, Fukuma   Assignee: Topcon Corporation   IPC: A61B3/10
16 US2020363530A1
MEASUREMENT SYSTEM, MEASUREMENT METHOD, AND MEASUREMENT PROGRAM
Publication/Patent Number: US2020363530A1 Publication Date: 2020-11-19 Application Number: 15/930,462 Filing Date: 2020-05-13 Inventor: Nishita, Nobuyuki   Anai, Tetsuji   Assignee: Topcon Corporation   IPC: G01S17/89 Abstract: A measurement system includes: a storage configured to store design information including at least a dimension and a designed position of each of building components at a construction site; a component identifier configured to identify at least one of the building components constructed at the construction site as an identified building component, based on the designed position stored in the storage; a scanner configured to measure a distance and/or angle from the identified building component identified by the component identifier; a point cloud data generator configured to generate three-dimensional point cloud data, based on a result of the distance and/or angle measured by the scanner; and an actually measured position calculator configured to calculate an actually measured position of the identified building component, based on the three-dimensional point cloud data.
17 EP3696721A3
OPHTHALMOLOGIC APPARATUS, METHOD OF CONTROLLING THE SAME, AND RECORDING MEDIUM
Publication/Patent Number: EP3696721A3 Publication Date: 2020-11-11 Application Number: 19219997.4 Filing Date: 2019-12-30 Inventor: Ono, Yusuke   Aoki, Hiroyuki   Assignee: Topcon Corporation   IPC: G06K9/00 Abstract: An ophthalmologic apparatus of an embodiment example includes a front image acquiring device, a first search processor, and a second search processor. The front image acquiring device is configured to acquire a front image of a fundus of a subject's eye. The first search processor is configured to search for an interested region corresponding to an interested site of the fundus based on a brightness variation in the front image. The second search processor is configured to search for the interested region by template matching between the front image and a template image in the event that the interested region has not been detected by the first search processor.
18 EP3715783A1
POINT CLOUD DATA PROCESSING METHOD AND POINT CLOUD DATA PROCESSING DEVICE
Publication/Patent Number: EP3715783A1 Publication Date: 2020-09-30 Application Number: 20162366.7 Filing Date: 2020-03-11 Inventor: Yasutomi, Satoshi   Assignee: Topcon Corporation   IPC: G01C7/04 Abstract: [Object] To provide a point cloud data processing method capable of easily extracting an analysis target from entire circumference point cloud data acquired by a measuring device that is moving along a measurement route. [Solution Means] A trajectory of a measuring device 20 is calculated based on measurement data acquired by the measuring device that is moving along a measurement route, and on a vertical plane orthogonal to the trajectory, a two-dimensional figure is identified by designating an extraction angle range around an intersection P of the trajectory and the vertical plane based on a perpendicular drawn down to a horizontal plane from the intersection and an extraction distance range based on the intersection P on the vertical plane, and a region obtained by extending the two-dimensional figure along the trajectory is set as an extraction region, and point cloud data in a region including a specific analysis target is extracted as extracted point cloud data from entire circumference point cloud data acquired by scanning the circumference of the measuring device and included in the measurement data.
19 EP3715909A1
LIGHT WAVE DISTANCE METER
Publication/Patent Number: EP3715909A1 Publication Date: 2020-09-30 Application Number: 20165270.8 Filing Date: 2020-03-24 Inventor: Shoji, Naoki   Assignee: Topcon Corporation   IPC: G01S7/4915 Abstract: A light wave distance meter according to the present invention includes: a light-emitting element that emits a distance measurement light; a light-receiving element that outputs a light-receiving signal; a frequency conversion unit that includes a bandpass filter; an arithmetic control unit that computes a distance value to a measurement object; a signal generator that generates a signal having a predetermined frequency; a waveform conversion unit that generates a waveform conversion signal ; pulse generators that generate pulse signals by pulsating the signal having a predetermined frequency so as to have a waveform profile of a signal constituted of desired frequency components on the basis of the signal output from the signal generator and the waveform conversion signal output from the waveform conversion unit; and a drive unit that emits the distance measurement light based on the pulse signals.
20 US10767991B2
Laser scanner
Publication/Patent Number: US10767991B2 Publication Date: 2020-09-08 Application Number: 15/784,563 Filing Date: 2017-10-16 Inventor: Ohtomo, Fumio   Kumagai, Kaoru   Assignee: TOPCON Corporation   IPC: G01C3/08 Abstract: A laser scanner includes a distance measuring unit which has a light emitting element for emitting a distance measuring light, a distance measuring light projecting unit, a light receiving unit and a photodetector for producing a light receiving signal, and which performs a distance measurement based on the light receiving signal, an optical axis deflecting unit provided on a distance measuring optical axis and for deflecting the distance measuring optical axis, a projecting direction detecting unit for detecting a deflection angle of the distance measuring optical axis and a control component for controlling the optical axis deflecting unit and the distance measuring unit, wherein the optical axis deflecting unit comprises a pair of optical prisms capable of rotating and motors for rotating the optical prisms, and wherein the control component is configured to control the optical axis deflecting unit, scan the distance measuring light and acquire scanning data under scanning conditions corresponding to a measurement range.