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    Method and apparatus for measuring refractive index based on a ratio between a number of second fringes divided by a difference of the number of second fringes minus a number of first fringes
    1.
    发明授权
    Method and apparatus for measuring refractive index based on a ratio between a number of second fringes divided by a difference of the number of second fringes minus a number of first fringes 失效
    用于根据第二条纹的数量除以第二条纹数减去第一条纹数量之差的比率来测量折射率的方法和装置

    公开(公告)号：US08687204B2

    公开(公告)日：2014-04-01

    申请号：US13071383

    申请日：2011-03-24

    Applicant: Chung-Chieh Yu

    Inventor： Chung-Chieh Yu

    IPC: G01N21/41

    CPC classification number: G01N21/45

    Abstract: A method and apparatus for measuring refractive index of an object are disclosed. The method includes, acquiring a number of first fringes of a first interference pattern formed by interference of a first beam of light transmitted through the object with a second beam of light not transmitted through the object; acquiring a number of second fringes of a second interference pattern formed by interference of a third beam of light reflected from a first surface of the object with a fourth beam of light transmitted through the object and reflected from a second surface of the object; and calculating the refractive index of the object based on the number of first fringes and the number of second fringes. The method may further include calculating the Abbe number of the object based on the refractive indices of the object measured at different wavelengths.

    Abstract translation: 公开了一种用于测量物体折射率的方法和装置。 该方法包括：获取由透射通过物体的第一光束的干涉而形成的第一干涉图案的第一条纹和不透过物体的第二光束; 获取由从物体的第一表面反射的第三光束的干涉与透射通过物体并从物体的第二表面反射的第四光束的干涉形成的第二干涉图案的多个第二条纹; 并且基于第一条纹的数量和第二条纹的数量来计算物体的折射率。 该方法还可以包括基于在不同波长处测量的物体的折射率来计算物体的阿贝数。

    Laser drive method and apparatus
    3.
    发明授权
    Laser drive method and apparatus 有权
    激光驱动方法和装置

    公开(公告)号：US07433377B2

    公开(公告)日：2008-10-07

    申请号：US10444460

    申请日：2003-05-22

    Applicant: Patrick A. Quinn ,  Chung-Chieh Yu

    Inventor： Patrick A. Quinn ,  Chung-Chieh Yu

    IPC: H01S3/00

    CPC classification number: H01S5/042 ,  H01S5/0427

    Abstract: A laser diode is employed to output light. A laser driver is employed to drive the laser diode. A laser driver control unit is employed to control the driving, such that carrier concentration of the laser is substantially forced to a desired concentration as photon level of the laser initially arrives at a desired level. In one embodiment, the laser driver outputs a drive pulse to drive the laser diode, with the drive pulse having a complex waveform. In one embodiment, the complex waveform includes different transition time periods, and transient rates to raise the drive pulse from an initial level to a peak level. In another embodiment, the complex waveform includes different transition time periods and transient rates to raise the drive pulse from an initial level to a transition peak level and then drop the drive pulse back to an intermediate low level and then finally transition to a final peak level.

    Abstract translation: 采用激光二极管输出光。 采用激光驱动器驱动激光二极管。 使用激光驱动器控制单元来控制驱动，使得激光的载流子浓度基本上被迫到期望的浓度，因为激光的光子水平最初到达期望的水平。 在一个实施例中，激光驱动器输出驱动脉冲以驱动激光二极管，其中驱动脉冲具有复杂波形。 在一个实施例中，复波形包括不同的转变时间段，以及将驱动脉冲从初始电平升高到峰值电平的瞬态速率。 在另一个实施例中，复波形包括不同的转变时间段和瞬态速率，以将驱动脉冲从初始电平升高到转变峰值电平，然后将驱动脉冲降低回中间低电平，然后最终转变到最终峰值电平 。

    Speckle noise reduction based on longitudinal shift of sample
    6.
    发明授权
    Speckle noise reduction based on longitudinal shift of sample 有权
    基于样品纵向偏移的散斑降噪

    公开(公告)号：US08687253B2

    公开(公告)日：2014-04-01

    申请号：US13324845

    申请日：2011-12-13

    Applicant: Chung-Chieh Yu ,  Isao Matsubara ,  Mamoru Miyawaki

    Inventor： Chung-Chieh Yu ,  Isao Matsubara ,  Mamoru Miyawaki

    IPC: G03H1/26

    CPC classification number: G03H1/0443 ,  G03H1/32 ,  G03H2001/0456 ,  G03H2001/0825 ,  G03H2001/2655 ,  G03H2227/03

    Abstract: A method and apparatus for reducing speckle noise in an image of an object are disclosed. The method includes, placing the object in an interferometer at a first position along a beam path of an object beam, irradiating the object with the object beam, moving the object from the first position to a second position by longitudinally shifting the object along the beam path of the object beam, irradiating the object with the object beam at the second position. At each of the first and second positions a holographic image formed by interference between the object beam and a reference beam is recorded. An object image with reduced speckle noise is obtained by averaging the holographic images. Either an arithmetic mean or a weighted average may be used in the averaging of the holographic images.

    Abstract translation: 公开了一种用于减少物体的图像中的斑点噪声的方法和装置。 该方法包括：将物体沿着物体光束的光束路径放置在干涉仪的第一位置，用物体光束照射物体，通过沿着光束纵向移动物体将物体从第一位置移动到第二位置 物体光束的路径，在物体光束的第二位置照射物体。 在第一和第二位置的每一个处记录由物体光束和参考光束之间的干涉形成的全息图像。 通过平均全息图像获得具有减少的斑点噪声的对象图像。 在全息图像的平均中可以使用算术平均值或加权平均值。

    METHOD AND APPARATUS FOR MEASURING REFRACTIVE INDEX
    7.
    发明申请
    METHOD AND APPARATUS FOR MEASURING REFRACTIVE INDEX 失效
    用于测量折射率的方法和装置

    公开(公告)号：US20120243002A1

    公开(公告)日：2012-09-27

    申请号：US13071383

    申请日：2011-03-24

    Applicant: Chung-Chieh Yu

    Inventor： Chung-Chieh Yu

    IPC: G01N21/45

    CPC classification number: G01N21/45

    Abstract: A method and apparatus for measuring refractive index of an object are disclosed. The method includes, acquiring a number of first fringes of a first interference pattern formed by interference of a first beam of light transmitted through the object with a second beam of light not transmitted through the object; acquiring a number of second fringes of a second interference pattern formed by interference of a third beam of light reflected from a first surface of the object with a fourth beam of light transmitted through the object and reflected from a second surface of the object; and calculating the refractive index of the object based on the number of first fringes and the number of second fringes. The method may further include calculating the Abbe number of the object based on the refractive indices of the object measured at different wavelengths.

    Abstract translation: 公开了一种用于测量物体折射率的方法和装置。 该方法包括：获取由透射通过物体的第一光束的干涉而形成的第一干涉图案的第一条纹和不透过物体的第二光束; 获取由从物体的第一表面反射的第三光束的干涉与透射通过物体并从物体的第二表面反射的第四光束的干涉形成的第二干涉图案的多个第二条纹; 并且基于第一条纹的数量和第二条纹的数量来计算物体的折射率。 该方法还可以包括基于在不同波长处测量的物体的折射率来计算物体的阿贝数。

    System for tomographic imaging using coherent light that has a random phase distribution
    8.
    发明授权
    System for tomographic imaging using coherent light that has a random phase distribution 有权
    使用具有随机相位分布的相干光的断层成像系统

    公开(公告)号：US09176054B2

    公开(公告)日：2015-11-03

    申请号：US13491322

    申请日：2012-06-07

    Applicant: Isao Matsubara ,  Chung-Chieh Yu ,  William Dallas

    Inventor： Isao Matsubara ,  Chung-Chieh Yu ,  William Dallas

    IPC: G01B9/02 ,  G01N21/45 ,  G01N21/47

    CPC classification number: G01N21/45 ,  G01B9/02024 ,  G01B2290/40 ,  G01N21/4795

    Abstract: The present invention provides an apparatus for tomographic imaging of an object. The apparatus includes a light unit configured to generate illumination, which comprises coherent light and has random phase distribution in a plane perpendicular to an optical axis, for illuminating an object, a coupler which combines a reference beam and an object beam for an interference, a shifter configured to shift relative phase difference between the object light and the reference coherent light, a detector configured to detect an interference caused by the reference coherent light and object light for the each phase, and a processor configured to calculate an optical propagation based on the detected interference for the each phase.

    Abstract translation: 本发明提供一种用于物体的层析成像的装置。 该装置包括配置成产生照明的光单元，其包括相干光并且在垂直于光轴的平面中具有随机相位分布，用于照射物体，组合参考光束和物体光束以用于干涉的耦合器， 移位器，被配置为移动所述对象光和所述参考相干光之间的相对相位差;检测器，被配置为检测由所述参考相干光和对象光引起的针对每个相位的干扰;以及处理器，被配置为基于 检测到每个相位的干扰。

    QUANTITATIVE SPECTROSCOPIC IMAGING
    9.
    发明申请
    QUANTITATIVE SPECTROSCOPIC IMAGING 审中-公开
    量化光谱成像

    公开(公告)号：US20100249607A1

    公开(公告)日：2010-09-30

    申请号：US12568459

    申请日：2009-09-28

    Applicant: Chung-Chieh Yu ,  Condon Lau ,  Ramachandra Dasari ,  Michael Feld

    Inventor： Chung-Chieh Yu ,  Condon Lau ,  Ramachandra Dasari ,  Michael Feld

    IPC: A61B6/00 ,  A61B1/06

    CPC classification number: A61B5/4255 ,  A61B1/043 ,  A61B5/0071 ,  A61B5/0075 ,  A61B5/0084 ,  A61B5/0088

    Abstract: The present invention relates to a fully quantitative spectroscopy imaging instrument for wide area detection of early cancer (dysplasia). This instrument provides quantitative maps of tissue biochemistry and morphology, making it a powerful surveillance tool for objective early cancer detection. The design, construction, calibration, and diagnostics applications of this system is described with the use of physical tissue models. Measurements were conducted on a resected colon adenoma, and the system can be used for vivo imaging in the oral cavity.

    Abstract translation: 本发明涉及用于早期癌症（发育不良）的广域检测的全定量光谱成像仪。 该仪器提供组织生物化学和形态学的定量图，使其成为客观早期癌症检测的强大的监测工具。 使用物理组织模型描述了该系统的设计，构造，校准和诊断应用。 对切​​除的结肠腺瘤进行测量，该系统可用于口腔中的体内成像。

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