OPTICAL IMAGING SYSTEM WITH EXTENDED DEPTH OF FOCUS
    1.
    发明申请
    OPTICAL IMAGING SYSTEM WITH EXTENDED DEPTH OF FOCUS 审中-公开
    光学成像系统具有更广泛的聚焦深度

    公开(公告)号:WO2007085992A1

    公开(公告)日:2007-08-02

    申请号:PCT/IB2007/050195

    申请日:2007-01-20

    Abstract: The invention concerns an optical imaging apparatus comprising (o) a light source (1) , (p) sample holding means, (q) an interferometer, (r) reference means, (s) an objective (8) which is adapted to have its sample side focal plane crossing a sample held in said sample holding means, (t) optical or electro-optical means (2, 3, 5, 16) adapted to produce a ring shaped or multi-spot light source in the front focal plane (17) or any conjugated plane (17') of said objective (8) , at least one detector. The invention also includes a method for using said apparatus where the sample is illuminated by an interference pattern and the depth information is obtained by using optical Coherence Tomography.

    Abstract translation: 本发明涉及一种光学成像设备,包括(o)光源(1),(p)样品保持装置,(q)干涉仪,(r)参考装置,(s)物镜(8) 其样品侧焦平面与保持在所述样品保持装置中的样品交叉;(t)适于在前焦平面中产生环形或多点光源的光学或电光装置(2,3,5,16) (17)或所述物镜(8)的任何共轭平面(17'),至少一个检测器。 本发明还包括使用所述装置的方法,其中样本被干涉图案照射,并且通过使用光学相干断层扫描获得深度信息。

    INTERFEROMETRISCHE PROBENMESSUNG
    3.
    发明申请
    INTERFEROMETRISCHE PROBENMESSUNG 审中-公开
    干涉测量样品测量

    公开(公告)号:WO2007065670A2

    公开(公告)日:2007-06-14

    申请号:PCT/EP2006/011738

    申请日:2006-12-06

    Abstract: Es wird beschrieben eine Vorrichtung zur interferometrischen Messung einer Probe, insbesondere des Auges, mit einer Interferometeranordnung, welche einen ersten Meßstrahlengang, durch den ein Meßstrahl auf die Probe fällt, und einen ersten Referenzstrahlengang aufweist, durch den ein Referenzstrahl läuft, der mit dem Meßstrahl zur Interferenz gebracht wird, wobei die Interferometeranordnung einen zweiten Meß- und/oder zweiten Referenzstrahlengang aufweist, dessen/deren optischen Weglänge sich von der eines der ersten Strahlengänge unterscheidet, wobei die Weglängendifferenz gemäß einem Abstand zweier in Tiefenrichtung der Probe beabstandeter Meßbereiche gewählt ist.

    Abstract translation: 本发明描述了用于对样品进行干涉测量的装置,尤其是眼睛的具有通过该测量光束入射在样品上,并通过该参考光束穿过所述测量光束,以一第一参考光束路径中的第一测量光束路径的干涉仪 被带到干扰,其中,所述干涉仪装置具有第二测量和/或第二参考光束路径中,它/它们的光路长度不同于第一光路的所述一个不同的,其中所述路径长度差根据间隔开的在样本范围的深度方向上的两个之间的距离来选择。

    A METHOD OF FAST IMAGING OF OBJECTS BY MEANS OF SPECTRAL OPTICAL COHERENCE TOMOGRAPHY
    4.
    发明申请
    A METHOD OF FAST IMAGING OF OBJECTS BY MEANS OF SPECTRAL OPTICAL COHERENCE TOMOGRAPHY 审中-公开
    通过光谱光学相干法快速成像物体的方法

    公开(公告)号:WO2004043245A1

    公开(公告)日:2004-05-27

    申请号:PCT/PL2003/000118

    申请日:2003-11-12

    CPC classification number: A61B3/102 A61B3/1225 G01N21/4795

    Abstract: The subject of invention is a method of fast imaging of objects by means of spectral optical coherence tomography using partially coherent light comprising a matrix of detectors with a memory, specially suitable for medical imaging. This is accomplished with a partially coherent light source 1, an interferometer equipped with a beam splitter 2 and reference mirror 3, a probing scanner 4, a matrix of sensors with a memory 8, a spectrograph comprising 7, and a data processor. It is distinguished from other methods of synchronization of probing scanner 4 movements with the recording of interference spectra, by recording the signals originating from the interference spectra of consecutive points of the object 6 in the matrix of photo-detectors 8. Simultaneously with the probing scanner 4 movement to the next point in the cross-section of the object 6, all previously registered spectra are transferred to the memory within the detector matrix 8. The information is subsequently transferred to an appropriate data processor and the cross-sectional image reconstructed by means of numerical Fourier transform.

    Abstract translation: 本发明的主题是通过使用部分相干光的光谱相干断层摄影来快速成像物体的方法,其包括特别适用于医学成像的具有存储器的检测器矩阵。 这是通过部分相干光源1,配备有分束器2和参考镜3的干涉仪,探测扫描器4,具有存储器8的传感器矩阵,包括7的光谱仪和数据处理器来实现的。 通过将来自对象6的连续点的干扰光谱的信号记录在光检测器8的矩阵中,与探测扫描器4移动同步的其他方法与干涉光谱的记录不同。在探测扫描器的同时 4移动到对象6的横截面中的下一点,所有先前记录的光谱被传送到检测器矩阵8内的存储器。该信息随后被传送到适当的数据处理器,并且通过装置重建的横截面图像 的数字傅里叶变换。

    DUAL BEAM HETERODYNE FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY
    5.
    发明申请
    DUAL BEAM HETERODYNE FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY 审中-公开
    双束Heterodyne傅里叶域光学相干层析成像

    公开(公告)号:WO2008087613A2

    公开(公告)日:2008-07-24

    申请号:PCT/IB2008050205

    申请日:2008-01-21

    Abstract: The present invention relates to an apparatus and a method combining achromatic complex FDOCT signal reconstruction with a common path and dual beam configuration. The complex signal reconstruction allows resolving the complex ambiguity of the Fourier transform and to enhance the achievable depth range by a factor of two. The dual beam configuration shares the property of high phase stability with common path FDOCT. This is of importance for a proper complex signal reconstruction and is in particular useful in combination with handheld probes such as in endoscopy and catheter applications. The advantages of the present invention are in particular the flexibility to choose arbitrarily positioned interfaces in the sample arm as reference together with the possibility to compensate for dispersion.

    Abstract translation: 本发明涉及将消色差复合FDOCT信号重建与公共路径和双光束配置组合的设备和方法。 复信号重构可以解决傅立叶变换的复杂模糊性,并将可实现的深度范围提高一倍。 双光束配置与普通路径FDOCT共享高相位稳定性。 这对于正确的复杂信号重建非常重要,特别适用于手持式探头,如内窥镜和导管应用。 本发明的优点特别在于选择样品臂中任意定位的界面作为参考的可能性以及补偿分散的可能性。

    INTERFEROMETRIC SAMPLE MEASUREMENT
    6.
    发明申请
    INTERFEROMETRIC SAMPLE MEASUREMENT 审中-公开
    干涉测量法

    公开(公告)号:WO2007065670A3

    公开(公告)日:2007-10-11

    申请号:PCT/EP2006011738

    申请日:2006-12-06

    Abstract: The invention relates to a device for the interferometric measurement of a sample, in particular the eye, comprising an interferometer arrangement which comprises a first measurement beam path, through which a measurement beam falls onto the sample, and a first reference beam path, through which a reference beam runs, which is applied to the measuring beam for interference. The interferometer arrangement comprises a second measuring beam path and/or second reference beam path, whereby the optical wave lengths thereof are different from one of the first beam paths. The wave length difference is selected according to a distance of two measuring areas which are arranged at a distance in the depth direction of the sample.

    Abstract translation: 本发明描述了用于对样品进行干涉测量的装置,尤其是眼睛的具有通过该测量光束入射在样品上,并通过该参考光束穿过所述测量光束,以一第一参考光束路径中的第一测量光束路径的干涉仪 被带到干扰,其中,所述干涉仪装置具有第二测量和/或第二参考光束路径中,它/它们的光路长度不同于第一光路的所述一个不同的,其中所述路径长度差根据间隔开的在样本范围的深度方向上的两个之间的距离来选择。

    INTERFEROMETRISCHE PROBENMESSUNG
    7.
    发明申请
    INTERFEROMETRISCHE PROBENMESSUNG 审中-公开
    干涉测量样品测量

    公开(公告)号:WO2007065493A1

    公开(公告)日:2007-06-14

    申请号:PCT/EP2006/008970

    申请日:2006-09-14

    Abstract: Es wird eine Vorrichtung beschrieben zur interferometrischen Messung einer Probe (P), insbesondere des Auges (A), mit einer Interferometeranordnung (1), welche einen ersten Meßstrahlengang, durch den ein Meßstrahl auf die Probe fallt, und einen ersten Referenzstrahlengang (R) aufweist, durch den ein Referenzstrahl lauft, der mit dem Meßstrahl zur Interferenz gebracht wird, wobei die Interferometeranordnung einen zweiten Meß- und/oder zweiten Referenzstrahlengang (R2) aufweist, dessen/deren optischen Weglange sich von der eines der ersten Strahlengange unterscheidet, wobei die Weglangendifferenz gemäß einem Abstand zweier in Tiefenrichtung der Probe beabstandeter Meßbereiche (5, 6, 7) gewählt ist.

    Abstract translation: 一种装置被用于对样品(P)的干涉测量所描述的,特别是眼(A)的,与干涉仪(1),其具有通过该测量光束落在样品和第一参考光束路径中的第一测量光束路径(R) 通过其带来了与探测光束的干扰,其中,所述干涉仪的第二测量和/或第二参考光束(R2),它/它们的光路长度不同于第一光路的所述一个不同的,其中所述路径长度的参考光束运行 根据两个间隔开的在样本范围的深度方向(图5,6,7)被选择之间的距离。

    PHASE SENSITIVE FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY
    8.
    发明申请
    PHASE SENSITIVE FOURIER DOMAIN OPTICAL COHERENCE TOMOGRAPHY 审中-公开
    相敏感FOURIER域光学相干TOMOGRAPHY

    公开(公告)号:WO2006100544A1

    公开(公告)日:2006-09-28

    申请号:PCT/IB2005/050958

    申请日:2005-03-21

    Abstract: Optical Coherence Tomography (OCT) is an imaging technique with high axial resolution in the micro-meter-scale range combined with a high sensitivity allowing for example to probe weakly back-scattering structures beneath the surface of biological tissues up to several millimeters. A major improvement of this conventional technique represents Fourier Domain OCT with a further decrease in image acquisition time and additional sensitivity. The apparatus including appropriate signal processing reconstructs the depth profile from the spectrally resolved light signal generated by a broadband source and an interferometric imaging system. By frequency shifting the light fields with frequency shifting means in the reference and sample arm a phase resolved signal at high speed can be registered. Therefore the reference arm does not rely on arm length changes or delays. The beating signal generated in this way shows high phase stability. The phase of this beating signal is not wavelength dependent, as the frequency shift applied is the same for all wavelengths. Moreover this results in an additional suppression of unwanted auto-correlated distortion as well as an extended depth range.

    Abstract translation: 光学相干断层扫描(OCT)是一种成像技术,在微米尺度范围内具有高轴向分辨率,并具有高灵敏度,例如可以探测几毫米以下的生物组织表面之下的弱背散射结构。 这种常规技术的主要改进表现为傅立叶域OCT,图像获取时间和附加灵敏度进一步降低。 包括适当信号处理的装置根据由宽带源和干涉成像系统产生的光谱分辨光信号重构深度分布。 通过在参考和采样臂中使用频移装置对光场进行频移,可以登记高速的相位解析信号。 因此,参考臂不依赖于手臂长度的变化或延迟。 以这种方式产生的跳动信号显示出高相位稳定性。 这种跳动信号的相位不是波长相关的,因为施加的频移对于所有波长都是相同的。 此外,这导致额外的抑制不想要的自相关失真以及扩展的深度范围。

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