公开(公告)号：US10277006B2

公开(公告)日：2019-04-30

申请号：US15570415

申请日：2016-04-28

Applicant: TOPCON CORPORATION

Inventor： Suguru Miyagawa ,  Yoshiaki Goto ,  Yoshikatsu Tokuda

IPC: H01S5/042 ,  G01S17/10 ,  G01S7/484 ,  H01S5/0683 ,  G01R15/22 ,  H01S3/00 ,  H04B10/50 ,  G01S7/497

Abstract: Provided is a technology for suppressing variations in the waveform of a light emission pulse caused by various factors in a light-emitting device. A light-emitting device is provided with: a light source 101 in which relaxation oscillation occurs immediately after energization; a light source drive circuit 104 which includes a differentiation circuit 102 having a resistor and a capacitor connected in parallel, and in which a switching element 103 for voltage application is connected in series with the differentiation circuit; a power supply circuit 105; a light-reception element 107 which detects pulsed light emitted from the light source 101; and a voltage control unit 109 which controls an output voltage from the power supply circuit 105 in correspondence with the waveform of the detected pulsed light.

公开(公告)号：US10959615B2

公开(公告)日：2021-03-30

申请号：US16085595

申请日：2017-02-20

Applicant: OSAKA UNIVERSITY ,  TOPCON CORPORATION

Inventor： Takashi Fujikado ,  Masakazu Hirota ,  Kohji Nishida ,  Makoto Saika ,  Tatsuo Yamaguchi ,  Suguru Miyagawa

IPC: A61B3/113 ,  A61B3/10 ,  A61B3/08 ,  A61B3/00

Abstract: An eye-fatigue examining device and an eye-fatigue examining method capable of examining eye fatigue of a subject's eye regardless of an age of a patient are provided. The eye-fatigue examining device includes: a light quantity difference adjusting unit that increases a light quantity difference between lights respectively incident on right and left subject's eyes; a gaze direction detecting unit that detects gaze directions of the respective subject's eyes while the light quantity difference adjusting unit increases the light quantity difference; and a light quantity difference deciding unit that decides a specific light quantity difference at which a change in the gaze directions due to the increase in the light quantity difference occurs, based on the detection result of the gaze direction detecting unit.

公开(公告)号：US11941800B2

公开(公告)日：2024-03-26

申请号：US17099828

申请日：2020-11-17

Applicant: TOPCON CORPORATION

Inventor： Ryoichi Hirose ,  Tatsuo Yamaguchi ,  Suguru Miyagawa

IPC: G06K9/00 ,  A61B3/00 ,  A61B3/10 ,  A61B3/12 ,  G06T3/20 ,  G06T7/00

CPC classification number: G06T7/0012 ,  A61B3/0025 ,  A61B3/0041 ,  A61B3/102 ,  A61B3/1225 ,  G06T3/20 ,  G06T2207/10101 ,  G06T2207/30041

Abstract: An ophthalmologic information processing apparatus analyzes an image of a subject's eye formed by arranging a plurality of A-scan images acquired by performing OCT scan on inside the subject's eye with measurement light deflected around a scan center position. The ophthalmologic information processing apparatus includes a correcting unit, a region specifying unit, and a direction specifying unit. The correcting unit is configured to transform a pixel position in the image into a transformation position along a traveling direction of the measurement light passing through the scan center position. The region specifying unit is configured to specify a predetermined layer region by analyzing the image in which the pixel position has been transformed by the correcting unit. The direction specifying unit is configured to specify a normal direction of the layer region specified by the region specifying unit.

公开(公告)号：US12220171B2

公开(公告)日：2025-02-11

申请号：US17665586

申请日：2022-02-06

Applicant: Topcon Corporation

Inventor： Yoko Tatara ,  Suguru Miyagawa ,  Tatsuo Yamaguchi ,  Makoto Saika

IPC: A61B3/00 ,  A61B3/02 ,  A61B3/028 ,  A61B3/10 ,  A61B3/103 ,  A61B3/12 ,  A61B3/15

Abstract: The ophthalmologic device to be coupled to a correcting device for correcting subject eyes, the correcting device including a right-left pair of two examination windows and a right-left pair of arrangement mechanisms that each arrange first optical elements, includes: a coupling member configured to be detachably coupled to each of coupled members provided on a side surface of the correcting device on a side opposite to an eyepiece side for each subject eye; a second optical element arranged at a position facing a second examination window opposite to a first examination window which is an eyepiece window, when the coupling member is coupled to the coupled member, the second optical element configured to branch a second optical path from a first optical path along the optical axes; and an objective measuring system arranged on the second optical path and configured to acquire ocular characteristics of each subject eye.

公开(公告)号：US11363948B2

公开(公告)日：2022-06-21

申请号：US16691882

申请日：2019-11-22

Applicant: OSAKA UNIVERSITY ,  TOPCON CORPORATION

Inventor： Takashi Fujikado ,  Yoko Hirohara ,  Makoto Saika ,  Suguru Miyagawa

IPC: A61B3/103 ,  A61B3/00 ,  A61B3/10 ,  A61B3/18

Abstract: An ophthalmologic device includes: a visual target presenting unit configured to present a common visual target to be viewed with both subject's eyes; a presenting distance changing unit configured to change a presenting distance of the visual target presented by the visual target presenting unit from a predetermined far vision distance to a predetermined near vision distance; an ocular characteristic acquiring unit configured to objectively acquire an optical characteristic of the subject's eyes; an addition power adding unit configured to add the addition power to the both subject's eyes; and a control unit configured to cause the presenting distance changing unit to change the presenting distance and the ocular characteristic acquiring unit to continuously acquire the optical characteristic, in a state in which an addition power is added to the both subject's eyes by the addition power adding unit.

公开(公告)号：US11204243B2

公开(公告)日：2021-12-21

申请号：US16461160

申请日：2018-02-28

Applicant: RIKEN ,  TOPCON CORPORATION

Inventor： Shin Yoshizawa ,  Hideo Yokota ,  Suguru Miyagawa

IPC: G01B21/30 ,  G01B11/30 ,  G01C7/04 ,  G01B21/00

Abstract: Target point cloud data about a specific road are extracted from perimeter point cloud data acquired by moving a road surface measurement device along a measurement route and scanning the surroundings thereof. A data storage unit stores trajectory point sequence data that represent, as a plurality of trajectory points, the perimeter point cloud data and a trajectory of the movement of the road surface measurement device. A trajectory point sequence setting unit acquires a trajectory point sequence at equal intervals from the trajectory point sequence data. An extraction area setting unit sets, as extraction areas, a column area Ci and a parallelepiped area Hi that are geometric areas disposed at predetermined positions below a trajectory point Xi. An approximate nearest neighbor search processing unit and an extraction processing unit extract, as the target point cloud data, point data that belong to this extraction area of the perimeter point cloud data.