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公开(公告)号：US20200178791A1
公开(公告)日：2020-06-11
申请号：US16703487
申请日：2019-12-04
申请人： Tomey Corporation
发明人： Yuji Nozawa , Masahiro YAMANARI , Takashi KAMO
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.
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公开(公告)号：US20170231493A1
公开(公告)日：2017-08-17
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.
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公开(公告)号：US20230380691A1
公开(公告)日：2023-11-30
申请号：US18202170
申请日：2023-05-25
申请人： Tomey Corporation
CPC分类号： A61B5/0062 , A61B3/102 , A61B3/0025
摘要： An ophthalmic device that may include: a light source; a measurement optical system that generates measurement light; a first reference optical system that generates first reference light; a second reference optical system that generates second reference light; and an interference optical system that generates measurement interference light from the measurement light and the first reference light, and reference interference light from the first and second reference light. The measurement optical system may include a switching unit that switches between a first state in which the subject eye is irradiated with the light from the light source and a second state in which the light from the light source is guided to the second reference optical system branching from the measurement optical system. The controller may control the switching unit to detect the measurement interference light in the first state, and the reference interference light in the second state.
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公开(公告)号：US20160069664A1
公开(公告)日：2016-03-10
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
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。
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5.发明申请公开(公告)号：US20150162900A1
公开(公告)日：2015-06-11
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。
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