公开(公告)号：US20210161377A1

公开(公告)日：2021-06-03

申请号：US17153183

申请日：2021-01-20

申请人： Tomey Corporation

发明人： Yuji Nozawa ,  Chihiro Kato ,  Takashi Kamo

IPC分类号： A61B3/10 ,  A61B3/00

摘要： An optical coherence tomographic device configured to acquire a tomographic image of a subjected eye is disclosed herein. The optical coherence tomographic device may include a light source of wavelength sweeping type; and a measurement optical system configured to irradiate the subjected eye with light outputted from the light source, where D/S×λ>1.61 may be satisfied, with a diameter of the light outputted from the light source at an incident position to the subjected eye is D, a wavelength swept frequency of the light source is S, and a center wavelength of the light outputted from the light source is λ.

公开(公告)号：US20190274544A1

公开(公告)日：2019-09-12

申请号：US16334164

申请日：2017-09-21

申请人： TOMEY CORPORATION ,  QD Laser, Inc.

发明人： Mitsuru Sugawara ,  Makoto Suzuki ,  Hideo Mukai

IPC分类号： A61B3/12 ,  A61B3/10 ,  A61B3/00

摘要： A scanning laser ophthalmoscope may include: a light source configured to emit laser light; a scanner configured to scan the laser light emitted from the light source two-dimensionally; a guide mirror configured to guide the laser light scanned by the scanner to a fundus of an eye of a subject; a guide mirror holder configured to hold the guide mirror in a predetermined positional relationship with the eye of the subject; a light receiver configured to receive reflected light of the laser light reflected on the fundus; and an image generator configured to generate a fundus image based on the reflected light received by the light receiver. The guide mirror may be disposed on a path connecting the scanner and the fundus of the eye of the subject, and disposed in front of the eye of the subject. The scanner may be disposed at the guide mirror holder.

公开(公告)号：US20190191991A1

公开(公告)日：2019-06-27

申请号：US16217189

申请日：2018-12-12

申请人： Tomey Corporation

发明人： Yuji Nozawa ,  Chihiro Kato ,  Takashi Kamo

IPC分类号： A61B3/10

CPC分类号： A61B3/102 ,  A61B3/0008

摘要： An optical coherence tomographic device configured to acquire a tomographic image of a subjected eye is disclosed herein. The optical coherence tomographic device may include a light source of wavelength sweeping type; and a measurement optical system configured to irradiate the subjected eye with light outputted from the light source, where D/S×λ>1.61 may be satisfied, with a diameter of the light outputted from the light source at an incident position to the subjected eye is D, a wavelength swept frequency of the light source is S, and a center wavelength of the light outputted from the light source is λ.

公开(公告)号：US20180279873A1

公开(公告)日：2018-10-04

申请号：US15982948

申请日：2018-05-17

申请人： TOMEY CORPORATION

发明人： Chihiro Kato ,  Tsutomu Ohmori ,  Yuji Nozawa

IPC分类号： A61B3/117 ,  G01B9/02 ,  A61B3/10 ,  A61B3/12

摘要： An ophthalmologic apparatus comprises a light source 12, an optical measurement system 13 that radiates first light from the light source to inside an eye to be examined and guides first reflected light from the eye, an optical reference system (24, 22) that radiates second light from the light source to a reference surface and guides second reflected light from the reference surface, a photo detector 26 that detects interfering light between the first reflected light from the optical measurement system and the second reflected light from the optical reference system, and a processor that determines a position of a measuring portion of the inside of the eye based on the detected interfering light. The optical measurement system comprises an incident angle changing member 46 that changes an incident angle of the first light radiated to the eye within a predetermined angular range relative to an axis of vision of the eye.

公开(公告)号：US09931034B2

公开(公告)日：2018-04-03

申请号：US15427289

申请日：2017-02-08

申请人： Tomey Corporation

发明人： Tsutomu Ohmori ,  Masahiro Yamanari ,  Satoshi Sugiyama

IPC分类号： A61B3/14 ,  A61B3/15 ,  A61B3/00 ,  A61B3/10 ,  A61B3/12 ,  G02B1/11 ,  G01B9/02

CPC分类号： A61B3/154 ,  A61B3/0025 ,  A61B3/0075 ,  A61B3/1005 ,  A61B3/102 ,  A61B3/1225 ,  G01B9/02004 ,  G01B9/02078 ,  G01B9/02091 ,  G02B1/11

摘要： An optical coherence tomography includes a light source, a light separator, a light generator configured to generate interference light, a detector configured to detect the interference light, a first optical element, and at least one of second optical elements comprising a pair of surfaces, and performs forming a tomographic image of a subject. The first optical element is arranged on a measurement light path so as to be closest to the subject, and satisfies at least one of following conditional formulas: −(W−S) X−W+S,  [c2] W: a predetermined operation distance U: a depth of interest S: a range of interest X: a distance which is greater than W+U+S and minimal among distance(s) between the pair of surfaces Z: a shallowest position of the area of interest relative to an origin position.

公开(公告)号：US09808152B2

公开(公告)日：2017-11-07

申请号：US15179511

申请日：2016-06-10

申请人： Tomey Corporation

发明人： Keiichiro Okamoto ,  Risa Higashita ,  Fushi Li ,  Makoto Kojima

IPC分类号： A61B3/14 ,  A61B3/00 ,  A61B3/117 ,  A61B3/10 ,  G06T7/12

CPC分类号： A61B3/1176 ,  A61B3/0025 ,  A61B3/102 ,  A61B3/117 ,  A61B3/14 ,  G06T7/12 ,  G06T2207/10101 ,  G06T2207/30041

摘要： An anterior ocular segment optical coherence tomographic imaging device and an anterior ocular segment optical coherence tomographic imaging method that can accurately analyze the shape of a crystalline lens by identifying the boundary of each layer of the crystalline lens in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography. A layer boundary detector calculates brightness gradients from brightness values in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography, in a depth direction of the tomographic image from a cornea to a retina, detect edges b1, b2, b3, and b4 that are larger than a predetermined threshold, and identify a boundary of each layer of the crystalline lens L from positions of the edge b1, b2, b3, and b4.

公开(公告)号：US09700204B2

公开(公告)日：2017-07-11

申请号：US14494149

申请日：2014-09-23

申请人： Tomey Corporation

发明人： Chihiro Kato ,  Yuji Nozawa

IPC分类号： A61B3/117 ,  A61B3/10 ,  A61B3/00

CPC分类号： A61B3/117 ,  A61B3/0008 ,  A61B3/0025 ,  A61B3/1005 ,  A61B3/1173

摘要： An ophthalmological device emits light from a measurement optical system to an eye to be examined and calculates a dimension along the eye axis of a target portion of the eye from interfering light composed of reflected light from the eye and reference light. The measurement optical system includes incidence position changing member that changes the incidence position of light emitted to the eye, and driving unit that drives the incidence position changing member so as to scan at the incidence position of emitted light in a predetermined region of the eye. The predetermined region is a region where a straight line passes through when the straight line radially extended from the cornea apex of the eye is circumferentially moved over a predetermined angle range in the case of the eye is viewed from the front.

公开(公告)号：US09649028B2

公开(公告)日：2017-05-16

申请号：US15008637

申请日：2016-01-28

申请人： Tomey Corporation

发明人： Chihiro Kato ,  Yuji Nozawa ,  Keiichiro Okamoto

IPC分类号： A61B3/10 ,  A61B3/107 ,  A61B3/00 ,  A61B3/14

CPC分类号： A61B3/107 ,  A61B3/0025 ,  A61B3/1005 ,  A61B3/102 ,  A61B3/14

摘要： An ophthalmological device calculates a cornea surface shape of an eye to be examined. The ophthalmological device includes a ring image photographic optical system configured to radiate a plurality of concentric ring light to the cornea surface of the eye and take reflected images of the plurality of ring light reflected from the cornea surface of the eye, an interference optical system configured to radiate measurement light to the eye and detect interfering light composed of reflected light of the measurement light reflected from the eye and predetermined reference light. The shape of the cornea anterior surface of the eye is calculated form the reflected images of the plurality of ring light, the thicknesses of the cornea of the eye at the plurality of incident positions is calculated from the interfering light, and the posterior surface shape of the cornea of the eye is calculated based on these two results.

公开(公告)号：US20170105617A1

公开(公告)日：2017-04-20

申请号：US15296598

申请日：2016-10-18

申请人： Tomey Corporation

发明人： Fushi LI ,  Keiichiro OKAMOTO ,  Kenichi HAYASHI

IPC分类号： A61B3/10 ,  A61B3/103 ,  A61B3/00 ,  A61B8/10

CPC分类号： A61B3/102 ,  A61B3/0025 ,  A61B3/1005 ,  A61B3/103 ,  A61B3/117 ,  A61B8/10

摘要： An anterior eye tomographic image capturing apparatus determining a power of an IOL (intraocular lens) is configured to acquire a tomographic image of an anterior eye along a straight line passing through a corneal apex of the anterior eye; identify a corneal apex position of the anterior eye, an equator position of a crystalline lens of the anterior eye, and a SS (scleral spur) position of the anterior eye based on the tomographic image; calculate an ELP (estimated lens position) based on a first distance from the corneal apex position to the SS position in a direction of a visual axis and a second distance from the SS position to the equator position in the direction of the visual axis; and determine the power of the IOL by using the ELP.

公开(公告)号：US09593936B2

公开(公告)日：2017-03-14

申请号：US14849860

申请日：2015-09-10

申请人： Tomey Corporation

发明人： Masahiro Yamanari

IPC分类号： G01B9/02 ,  A61B3/10 ,  A61B5/00

CPC分类号： G01B9/02091 ,  A61B3/102 ,  A61B5/0066 ,  G01B9/02004 ,  G01B9/02028 ,  G01B9/02069 ,  G01B2290/45 ,  G01B2290/70

摘要： Provided is an optical tomographic device for simultaneously acquiring a plurality of tomographic images at a same position in a subject without narrowing a depthwise measurement range. A measurement light generator generates at least two measurement lights with different optical path lengths, superimposes the at least two measurement lights, radiates the resultant light to a subject, and splits reflected light reflected from the subject into at least two reflected lights. A reference light generator generates at least two reference lights with different optical path lengths. An interfering light generator combines the at least two reflected lights and the at least two reference lights having corresponding different optical path lengths, to generate at least two interfering lights. An interfering light detector detects the at least two interfering lights independently by at least two interfering light detectors.

摘要翻译： 本发明提供一种光学断层摄影装置，用于在不使得深度测量范围变窄的同时在对象的相同位置获取多个断层图像。 测量光发生器产生具有不同光程长度的至少两个测量光，叠加至少两个测量光，将所得到的光照射到被摄体，并将从被摄体反射的反射光分成至少两个反射光。 参考光发生器产生具有不同光程长度的至少两个参考光。 干涉光发生器将至少两个反射光和至少两个具有相应不同光程长度的参考光相结合，以产生至少两个干涉光。 干涉光检测器通过至少两个干涉光检测器独立地检测至少两个干涉光。