-
公开(公告)号：US11478146B2
公开(公告)日：2022-10-25
申请号：US16250376
申请日：2019-01-17
申请人： Tomey Corporation
发明人： Masahiro Yamanari
IPC分类号： G01B9/02 , A61B3/12 , G01B9/02091 , A61B3/10
摘要： An optical coherence tomographic device may include: a light source; a measurement light generator that generates measurement light and generates reflected light from a target region in a scattering sample by irradiating the target region with the measurement light; a reference light generator that generates reference light; an interference light generator that generates interference light by combining the reflected light and the reference light; an interference light detector that detects the interference light and generates interference signals by converting the interference light; and a processor. The processor may cause the OCT device to execute: acquiring tomographic images for a same cross section in the target region in time series from the interference signals; calculating an entropy of the generated interference signals based on the tomographic images; and specifying a dynamic part in the tomographic images based on the calculated entropy.
-
公开(公告)号：US11369265B2
公开(公告)日：2022-06-28
申请号：US16703487
申请日：2019-12-04
申请人： Tomey Corporation
发明人： Yuji Nozawa , Masahiro Yamanari , Takashi Kamo
IPC分类号： G01B9/02 , A61B3/10 , A61B5/00 , G01B9/02004 , G01B9/02001 , G01B9/02055 , G01B9/02091
摘要： An ophthalmic apparatus may include: a wavelength sweeping light source; a reference optical system; a calibration optical system; a light receiving element configured to receive calibration interference light which is a combination of calibration light and reference light; and a signal processor configured to sample a calibration interference signal outputted from the light receiving element when it receives the calibration interference light. The signal processor may sample the calibration interference light in at least first and second frequency bands, which are different and used for measuring a specific region of a subject eye. The ophthalmic apparatus calculates a difference between first and second waveforms, the first waveform being a waveform of the calibration interference signal that is sampled in the first frequency band and Fourier transformed, the second waveform being a waveform of the calibration interference signal that is sampled in the second frequency band and Fourier transformed.
-
公开(公告)号：US09918623B2
公开(公告)日：2018-03-20
申请号：US14926790
申请日：2015-10-29
申请人： Tomey Corporation
发明人： Masahiro Yamanari
CPC分类号： A61B3/0025 , A61B3/102 , A61B3/1225 , G01B9/02004 , G01B9/02011 , G01B9/02027 , G01B9/02082 , G01B9/02083 , G01B9/02091 , G01B2290/45 , G01B2290/70
摘要： An optical tomographic imaging apparatus capable of acquiring a two-dimensional or/and three-dimensional tomographic image having higher SNR and quality by cancelling phase change caused by birefringence of a sample in average processing using a predetermined kernel region, and calculating a global phase difference of each pixel in the kernel. The optical tomographic imaging apparatus includes a processing unit configured to: set a predetermined kernel to a B scan image or/and C scan image (volume data) acquired corresponding to a Jones matrix; model the Jones matrix of each pixel in the set predetermined kernel by using one or more unitary matrices to calculate a relative global phase of each pixel; and cancel the calculated relative global phase in each pixel in the predetermined kernel to average each element of the Jones matrix in the predetermined kernel.
-
公开(公告)号：US11311191B2
公开(公告)日：2022-04-26
申请号：US16580123
申请日：2019-09-24
申请人： Tomey Corporation
摘要： An ophthalmic apparatus may include a first light source configured to output a first light, a second light source configured to output a second light, a first interferometer configured to execute an examination of a first range using first interference light, and a second interferometer configured to execute an examination of a second range using second interference light, the second range being different from the first range. A central wavelength of the first light may be different from a central wavelength of the second light. A first optical path and a second optical path may at least partially overlap with each other, the first optical path being an optical path of the first light, and the second optical path being an optical path of the second light. The examination of the first range and the examination of the second range may be able to be executed simultaneously.
-
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
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.
-
6.发明授权Optical tomographic device capable of acquiring a plurality of tomographic images 有权能够获取多个断层图像的光学断层摄影装置公开(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
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。
-
7.发明授权公开(公告)号：US11243066B2
公开(公告)日：2022-02-08
申请号：US16225656
申请日：2018-12-19
申请人： Tomey Corporation
发明人： Masahiro Yamanari
IPC分类号： G01B9/02
摘要： An optical coherence tomographic device may include a light source, a measurement light generator, a reference light generator, an interference light generator, an interference light detector, and a processor. The interference light detector may include a first and second detector that convert interference light to interference signals, a first signal processing unit that samples the interference signal from the first detector, and a second signal processing unit that samples the interference signal from the second detector. Each of the first and second signal processing units may sample the interference signal at a timing from outside. Light generated by the measurement light generator may at least include first and second correction light. The processor may correct a time lag between sampling timings of the first and second signal processing units by using a first and second correction signal converted from the first and second correction light.
-
公开(公告)号：US20190195614A1
公开(公告)日：2019-06-27
申请号：US16225656
申请日：2018-12-19
申请人： Tomey Corporation
发明人： Masahiro Yamanari
IPC分类号： G01B9/02
CPC分类号： G01B9/02071 , G01B9/02004 , G01B9/02067 , G01B9/02069 , G01B9/02072 , G01B9/02091
摘要： An optical coherence tomographic device may include a light source, a measurement light generator, a reference light generator, an interference light generator, an interference light detector, and a processor. The interference light detector may include a first and second detector that convert interference light to interference signals, a first signal processing unit that samples the interference signal from the first detector, and a second signal processing unit that samples the interference signal from the second detector. Each of the first and second signal processing units may sample the interference signal at a timing from outside. Light generated by the measurement light generator may at least include first and second correction light. The processor may correct a time lag between sampling timings of the first and second signal processing units by using a first and second correction signal converted from the first and second correction light.
-
公开(公告)号：US09995565B2
公开(公告)日：2018-06-12
申请号：US15134828
申请日：2016-04-21
申请人： Tomey Corporation
发明人： Masahiro Yamanari
CPC分类号： G01B9/02083 , A61B3/0025 , A61B3/102 , A61B5/0066 , G01B9/02004 , G01B9/02027 , G01B9/02075 , G01B9/02091 , G01B2290/35 , G01B2290/70
摘要： The optical coherence tomography includes a processor, wherein the processor is configured to: vectorize the Jones matrix and then convert the vectorized Jones matrix into an expanded matrix; calculate at least an eigenvalue and at least an eigenvector of the expanded matrix by performing an eigenvalue decomposition to the expanded matrix; and estimate the polarization characteristic of the subject by using at least an eigenvalue and at least an eigenvector of the Jones matrix acquired based on the at least eigenvalue and the at least eigenvector of the expanded matrix.
-
10.发明授权Sample clock generator for optical tomographic imaging apparatus, and optical tomographic imaging apparatus 有权用于光学断层成像装置的采样时钟发生器和光学断层成像装置公开(公告)号：US09584098B2
公开(公告)日：2017-02-28
申请号：US14562850
申请日：2014-12-08
申请人： TOMEY CORPORATION
CPC分类号： H03K3/013 , A61B3/102 , G01B9/02004 , G01B9/02069 , G01B9/02091 , G02B27/10 , G02F1/21 , H01L31/02325 , H03K3/42
摘要： A sample clock generator includes a first optical path and a second optical path through which input lights are guided, an optical phase shifter to shift a phase of the input light guided through the first optical path, an interference-light generating unit to combine a phase-shifted input light and the input light guided through the second optical path to thereby generate an interference light for sample clock, a splitting unit to split the interference light for sample clock into two split lights having different phases, one light receiving unit to at least receive one split light from among the two split lights having different phases, the other light receiving unit to at least receive the other split light, a signal generating unit to generate a sample clock signal based on signals outputted from the one light receiving unit and the other light receiving unit.
摘要翻译： 采样时钟发生器包括第一光路和通过其被引导输入光的第二光路，用于移位通过第一光路引导的输入光的相位的光学移相器，干涉光产生单元，以组合相位 输入光通过第二光路引导，从而产生用于采样时钟的干涉光;分割单元，用于将采样时钟的干涉光分为具有不同相位的两个分离光，至少一个光接收单元 从具有不同相位的两个分裂光中接收一个分离光，另一个光接收单元至少接收另一个分离光;信号产生单元，用于基于从一个光接收单元输出的信号和 其他光接收单元。
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.014 秒)
