公开(公告)号：US11896307B2

公开(公告)日：2024-02-13

申请号：US16937607

申请日：2020-07-24

Applicant: TOPCON CORPORATION

Inventor： Yoko Tatara ,  Michiko Nakanishi ,  Shunichi Morishima

IPC: A61B3/10 ,  A61B3/103 ,  A61B3/12

CPC classification number: A61B3/102 ,  A61B3/103 ,  A61B3/12

Abstract: An ophthalmologic apparatus includes a refractive power measurement optical system, a fixation projection system, an inspection optical system, and a controller. The refractive power measurement optical system includes a first focusing element capable of changing a focal position, and is configured to project first light onto a subject's eye and to detect returning light of the first light from the subject's eye via the first focusing element. The fixation projection system is configured to project fixation light target onto the subject's eye. The inspection optical system includes a second focusing element capable of changing a focal position in conjunction with the first focusing element, and is used for a predetermined inspection in which second light is projected onto at least the subject's eye via the second focusing element. The controller is configured to control the first focusing element and the second focusing element based on a detection result of the returning light, and to perform refractive power measurement using the first light in a state of promoting a fogging of the subject's eye by controlling the fixation projection system after performing the predetermined inspection by inspection optical system.

公开(公告)号：US20240041323A1

公开(公告)日：2024-02-08

申请号：US17882600

申请日：2022-08-08

Applicant: Topcon Corporation

Inventor： Tatsuo YAMAGUCHI ,  Ryo BANDO

IPC: A61B3/14 ,  A61B3/00 ,  G06T7/00

CPC classification number: A61B3/14 ,  A61B3/0008 ,  A61B3/0025 ,  G06T7/0014 ,  G06T2207/30041

Abstract: An ophthalmic apparatus according to an embodiment includes an illumination system configured to project illumination light onto a subject's eye, and a photography system configured to perform photography of the subject's eye. The illumination system and the photography system are configured to satisfy a Scheimpflug condition. The illumination system includes a light source unit configured to output slit illumination light, and an illumination polarizer configured to extract an illumination polarization component from the slit illumination light. The illumination system is further configured to project the illumination polarization component onto the subject's eye. The photography system includes a photography polarizer configured to extract a photography polarization component from return light from the subject's eye with the slit illumination light projected, and an image sensor configured to detect the photography polarization component.

公开(公告)号：US11868325B2

公开(公告)日：2024-01-09

申请号：US17794599

申请日：2021-02-15

Applicant: TOPCON CORPORATION

Inventor： Atsushi Doji ,  Toshio Yamada ,  Nobuyuki Nishita ,  Satoshi Yanobe

IPC: G06F16/21

CPC classification number: G06F16/212

Abstract: A management system of the present invention includes a design database storing member identification information, member coordinates, and member shapes of construction members constituting a construction object, a management member selecting unit configured to select a management member to be managed among the construction members stored in the design database, a related member selecting unit configured to select a related member adjacent to the management member from the design database, a boundary information creating unit configured to select an adjacent portion between the management member and the related member, and with respect to the adjacent portion, as boundary information, associate identification information, adjacent portion coordinates, an adjacent portion shape of the adjacent portion, member identification information of the management member, and member identification information of the related member with each other, and a comparison result database configured to store information associated by the boundary information creating unit.

公开(公告)号：US20230397810A1

公开(公告)日：2023-12-14

申请号：US18033821

申请日：2020-12-09

Applicant: Topcon Corporation

Inventor： Kazuhiro YAMADA ,  Kazuhiro OOMORI ,  Yasufumi FUKUMA

IPC: A61B3/13 ,  G06T7/00 ,  G02B21/00 ,  G02B21/36 ,  A61B3/14

CPC classification number: A61B3/13 ,  G06T7/0012 ,  G02B21/0012 ,  G02B21/365 ,  A61B3/14 ,  G06T2207/10056 ,  G06T2207/30041 ,  G06T2207/10016

Abstract: An ophthalmic observation apparatus according to an embodiment example includes a moving image generating unit, an analyzing processor, and a display controller. The moving image generating unit is configured to generate a moving image by photographing a subject's eye into which an artificial object has been inserted. The analyzing processor is configured to analyze a still image included in the moving image to identify a first site image corresponding to a predetermined site of the subject's eye and a second site image corresponding to a predetermined site of the artificial object. The display controller is configured to display, on a display device, the moving image, first position information that represents a position of the first site image, and second position information that represents a position of the second site image.

公开(公告)号：US20230380680A1

公开(公告)日：2023-11-30

申请号：US18031904

申请日：2021-10-11

Applicant: Topcon Corporation

Inventor： Yusuke ONO

IPC: A61B3/10 ,  A61B3/00 ,  A61B3/117 ,  G06T7/60

CPC classification number: A61B3/102 ,  A61B3/0091 ,  A61B3/117 ,  G06T7/60 ,  G06T2207/30041

Abstract: The ophthalmic device 1 according to an exemplary embodiment of the present invention comprises an LCD 39, an OCT unit 250, an inclination information generation unit 231, and a control unit 210. The LCD 39 presents a fixation target to an eye E under examination. The OCT unit 250 applies an OCT scan to an anterior eye part Ea of the eye E under examination, and constructs an image. The inclination information generation unit 231 generates inclination information indicating the inclination state of the anterior eye part Ea that has been drawn in the image constructed by the OCT unit 250. On the basis of the inclination information generated by the inclination information generation unit 231, the control unit 210 controls the LCD 39 to move the fixation target.

公开(公告)号：US11815399B2

公开(公告)日：2023-11-14

申请号：US17653645

申请日：2022-03-05

Applicant: Topcon Corporation

Inventor： Akira Takada

IPC: G01J3/45 ,  G01J3/02

CPC classification number: G01J3/45 ,  G01J3/021 ,  G01J3/0208

Abstract: A wavelength-swept light source is configured to generate light to be measured that is wavelength-swept coherent light with a wavelength periodically changed. The light to be measured is separated into a measurement section and a reference section that have different optical path lengths, and is then coupled in an interference section to generate interfering light. An analyzer performs a Fourier transform of interference signals of the interfering light, and acquires an actual measured noise floor value for each of the optical path length differences based on a point spread function. An estimated coherence time is determined so that an actual measured amplitude value of the noise floor value and a calculated amplitude value coincide with each other. Linewidth of the light emitted from the coherent light source is measured based on the estimated coherence time.

公开(公告)号：US20230314135A1

公开(公告)日：2023-10-05

申请号：US18125609

申请日：2023-03-23

Applicant: TOPCON CORPORATION

Inventor： Masaho KIKUCHI ,  Akinobu SUGIURA

IPC: G01C15/00 ,  G01C5/00

CPC classification number: G01C15/006 ,  G01C5/00

Abstract: A surveying instrument capable of irradiating a spotlight as visible light for centering toward a position below a vertical axis of a surveying instrument main body is configured such that that an irradiation shape of the spotlight is a toric shape. When visible light for centering which passes through a center point of the surveying instrument and is projected on a position right below the surveying instrument is projected in a toric shape having a hole opened at a center like a donut shape, both of an inner circle and an outer circle can be recognized, so that many guides are provided, and it is easier for a worker to align the toric shape with the target point than a point shape, so that the burden of a centering work on the worker is reduced.

公开(公告)号：US20230314133A1

公开(公告)日：2023-10-05

申请号：US18186971

申请日：2023-03-21

Applicant: TOPCON CORPORATION

Inventor： You SASAKI

IPC: G01C15/00 ,  E02F3/84

CPC classification number: G01C15/002 ,  E02F3/847

Abstract: Construction management and control of construction machines are efficiently performed at civil engineering sites. A laser scanning method includes a first laser scanning and a second laser scanning. The first laser scanning is performed on a blade of a construction machine by a laser scanning apparatus. The second laser scanning is performed on an area in which the construction machine has operated, by the laser scanning apparatus. The first laser scanning is performed at a frequency higher than a frequency of the second laser scanning.

公开(公告)号：US20230314131A1

公开(公告)日：2023-10-05

申请号：US18125601

申请日：2023-03-23

Applicant: TOPCON CORPORATION

Inventor： Masaho KIKUCHI

IPC: G01C5/00 ,  G01C15/00 ,  G01C15/06

CPC classification number: G01C5/00 ,  G01C15/006 ,  G01C15/06

Abstract: In a surveying instrument including an instrument height measuring unit configured to make a distance measurement by emitting distance-measuring light to a distance-measuring object below a vertical axis of a surveying instrument main body, and an arithmetic unit configured to calculate a distance to the distance-measuring object by analyzing light being the distance-measuring light that has returned by being reflected by the distance-measuring object, and calculate an instrument height, the instrument height measuring unit is configured to make a distance measurement by irradiating the distance-measuring light toward a predetermined region of the distance-measuring object centered on a point below the vertical axis of the surveying instrument main body, and the arithmetic unit is configured to calculate the instrument height by operating an average value of distance-measurement values in the region. By calculating an average value of results of distance measurements of a predetermined region, the measurement accuracy can be improved.

公开(公告)号：US20230306568A1

公开(公告)日：2023-09-28

申请号：US18012667

申请日：2021-06-22

Applicant: Osaka University ,  Topcon Corporation

Inventor： Kohji NISHIDA ,  Kazuichi MARUYAMA ,  Atsuya MIKI ,  Ryo KAWASAKI ,  Hirokazu SAKAGUCHI ,  Chikako HARA ,  Song MEI ,  Yasufumi FUKUMA ,  Zaixing MAO ,  Zhenguo WANG ,  Kinpui CHAN

IPC: G06T5/50 ,  G06T7/11 ,  G06T7/00 ,  G06T7/60 ,  G06T7/30 ,  A61B3/10 ,  A61B3/12

CPC classification number: G06T5/50 ,  A61B3/102 ,  A61B3/1225 ,  G06T7/0014 ,  G06T7/11 ,  G06T7/30 ,  G06T7/60 ,  G06T2200/04 ,  G06T2207/10101 ,  G06T2207/20036 ,  G06T2207/20212 ,  G06T2207/30041 ,  G06T2207/30096 ,  G06T2207/30101 ,  G06T2207/30242

Abstract: A medical diagnostic apparatus includes a receiver circuit that receives three-dimensional volumetric data of a subject’s eye, and a processor configured to separate portions of the three-dimensional volumetric data into separate segments, perform processing differently on each of the separate segments, and combine the separately processed segments to produce an enhanced three-dimensional volumetric data set. The processor is further configured to generate at least one diagnostic metric from the enhanced three-dimensional volumetric data set, and the processor is further configured to evaluate a pathological condition based on the at least one diagnostic metric. Related methods and computer readable media are also disclosed.