公开(公告)号：US20110199615A1

公开(公告)日：2011-08-18

申请号：US12678414

申请日：2009-12-25

Applicant: Mitsuro Sugita

Inventor： Mitsuro Sugita

IPC: G01J3/45

CPC classification number: G01N21/4795 ,  A61B3/102 ,  G01B9/02074 ,  G01B9/02089 ,  G01B9/02091 ,  G01B2290/45 ,  G01N2021/1787

Abstract: An optical coherence tomographic imaging apparatus for splitting light emitted from a light source into reference light and signal light and creating an optical coherence tomographic image and tomographic spectral information in a predetermined spectral analyzing portion in the optical coherence tomographic image based on optical interference signal information of the reference light and the signal light which are incident on an inspection target and reflected on respective layers, the optical coherence tomographic imaging apparatus including a spectral information processing unit for performing a spectral information calculation using an optical interference signal of a deeper region and creating the tomographic spectral information of the spectral analyzing portion. With this arrangement, spectral information corresponding to the optical coherence tomographic image can be output with high wavelength accuracy.

Abstract translation: 一种光学相干断层成像装置，用于将光源发出的光分解为参考光和信号光，并在光学相干断层图像中的预定光谱分析部分中基于光学相干断层图像的光学干涉信号信息产生光学相干断层图像和断层图像信息 所述基准光和信号光入射到检查对象上并在各层反射，所述光学相干断层摄影成像装置包括：光谱信息处理单元，用于使用较深区域的光学干涉信号进行光谱信息计算， 光谱分析部分的层析成像光谱信息。 利用这种布置，可以以高波长精度输出与光学相干断层图像对应的光谱信息。

公开(公告)号：US20110199614A1

公开(公告)日：2011-08-18

申请号：US12658902

申请日：2010-02-16

Applicant: David B. Johnson ,  Anthony Bond

Inventor： David B. Johnson ,  Anthony Bond

IPC: G01J3/45

CPC classification number: G01J3/4535

Abstract: In some embodiments, the pathlength difference (retardation) in a step scanning infrared (IR) spectrometer interferometer is maintained under AC servomechanism (servo) control for a first period following a step change, and under DC servo control for a second period following the first period. Data is acquired during and/or after the DC servo control period. Switching off the AC servo control prior to data acquisition allows limiting the dither-frequency noise that could otherwise affect signals of interest, particularly in fast-time-scale applications such as high-speed time-resolved spectroscopy (TSR). A mirror position control circuit controls a mirror position stepping as well as switching a mirror servo control from AC to DC.

Abstract translation: 在一些实施例中，步进扫描红外（IR）光谱仪干涉仪中的光程差（延迟）在阶跃变化之后的第一周期内被保持在AC伺服机构（伺服）控制下，并且在DC伺服控制下，在第一 期。 在DC伺服控制期间和/或之后采集数据。 在数据采集之前关闭AC伺服控制可以限制否则会影响感兴趣信号的抖动频率噪声，特别是在诸如高速时间分辨光谱（TSR）的快速时间尺度应用中。 反射镜位置控制电路控制反射镜位置步进以及将反光镜伺服控制从AC切换到DC。

公开(公告)号：US20110170108A1

公开(公告)日：2011-07-14

申请号：US11777518

申请日：2007-07-13

Applicant: F. Levent Degertekin

Inventor： F. Levent Degertekin

IPC: G01J3/45 ,  G01B11/14

CPC classification number: G01Q60/38 ,  G01N29/2406 ,  G01N29/2437 ,  G01N2291/0427 ,  G01Q10/045

Abstract: A system for measuring a property of a sample includes an actuation device disposed on a substrate and includes a flexible surface spaced apart from the substrate and configured so as to allow placement of the sample thereupon. The actuation device also includes a vertical actuator that is configured to cause the flexible surface to achieve a predetermined displacement from the substrate when a corresponding potential is applied thereto. A sensing probe is disposed so as to be configured to interact with the sample thereby sensing the property of the sample.

Abstract translation: 用于测量样品性质的系统包括设置在基底上的致动装置，其包括与基底间隔开的柔性表面，并被构造成允许样品放置在其上。 致动装置还包括垂直致动器，该垂直致动器构造成当施加相应的电位时使柔性表面实现来自基板的预定位移。 感测探针被设置成被配置为与样品相互作用，从而感测样品的性质。

公开(公告)号：US07973937B1

公开(公告)日：2011-07-05

申请号：US11505990

申请日：2006-08-18

Applicant: Richard L. Kendrick ,  Eric H. Smith

Inventor： Richard L. Kendrick ,  Eric H. Smith

IPC: G01J3/45

CPC classification number: G01J3/453

Abstract: A method for reducing noise in a multi-aperture imaging system is provided. Each sub-collector of the system, at least one of which has an adjustable optical path length, collects a portion of a wavefront. The adjustable optical path length is varied to each of a set of predetermined lengths to generate interference patterns. Each interference pattern is recorded at an image plane of the system to generate a recorded interference pattern made up of pixels. Pixel intensity data sets are generated, each of which includes a pixel intensity level from a corresponding one of the pixels from each recorded interference pattern. Each pixel intensity data set is Fourier transformed, and in each Fourier transformed data set, spatial frequencies having power values above a predetermined level are identified. The power levels exceeding the threshold are measured and a resultant image is constructed, where each image pixel thereof corresponds to one pixel intensity data set and has one or more intensity values corresponding to the measured power values for that corresponding pixel intensity data set.

Abstract translation: 提供了一种用于降低多孔成像系统中的噪声的方法。 系统的每个子集电极，其至少一个具有可调光路长度，收集波前的一部分。 可调光路长度变化为一组预定长度中的每一个以产生干涉图案。 每个干涉图案被记录在系统的图像平面上，以产生由像素构成的记录的干涉图案。 产生像素强度数据集，每个像素强度数据集包括来自每个记录的干涉图案的相应一个像素的像素强度级别。 每个像素强度数据集被傅里叶变换，并且在每个傅里叶变换的数据集中，识别具有高于预定水平的功率值的空间频率。 测量超过阈值的功率电平，并且构造合成图像，其中其每个图像像素对应于一个像素强度数据集，并且具有与对应的像素强度数据集的测量的功率值相对应的一个或多个强度值。

公开(公告)号：US20110157595A1

公开(公告)日：2011-06-30

申请号：US12650322

申请日：2009-12-30

Applicant: William S. Yerazunis ,  Richard C. Waters

Inventor： William S. Yerazunis ,  Richard C. Waters

IPC: G01J3/45 ,  G01B9/02

CPC classification number: G01B9/02018 ,  G01B9/02056 ,  G01B9/02081 ,  G01B11/26 ,  G01B2290/15 ,  G01B2290/45 ,  G01B2290/70

Abstract: An angular displacement of an object is measured interferometrically by splitting a laser beam into a reference beam and a measuring beam. The reference beam is directed at a stationary reference retroreflector and then a phase shift detector. The measuring beam is directed at a rotatable reflective surface of the object and then a stationary measuring retroreflector and then back to the rotatable reflective surface and then to the phase shift detector such that the phase shift detector measures an angular displacement of the rotatable reflective surface when the length of the path of the measuring beam changes when the rotatable reflective surface is displaced.

Abstract translation: 通过将激光束分成参考光束和测量光束来对物体的角位移进行干涉测量。 参考光束指向静止的参考后向反射器，然后是相移检测器。 测量光束指向物体的可旋转反射表面，然后指向静止测量后向反射器，然后返回到可旋转反射表面，然后返回到相移检测器，使得相移检测器测量可旋转反射表面的角位移， 当可旋转的反射表面被移位时，测量光束的路径的长度改变。

公开(公告)号：US20110139990A1

公开(公告)日：2011-06-16

申请号：US12989871

申请日：2009-08-04

Applicant: Huikai Xie ,  Lei Wu ,  Andrea Pais ,  Sean Robert Samuelson

Inventor： Huikai Xie ,  Lei Wu ,  Andrea Pais ,  Sean Robert Samuelson

IPC: G01N21/35 ,  G01J3/45

CPC classification number: G01J3/4535 ,  G01J5/08 ,  G01J5/0853 ,  G01J5/38 ,  G01N2021/3595 ,  G02B26/0866

Abstract: A MEMS-based Fourier Transform (FT) spectrometer is provided. According to an embodiment, the MEMS-based FT spectrometer is an FT infrared (FTIR) spectrometer. The FT spectrometer can include a beam splitter positioned to receive an incoming beam from a light source and split the incoming beam into a first sub-beam and a second sub-beam, a fixed mirror positioned to receive the first sub-beam from the beam splitter, a scanning MEMS mirror positioned to receive the second sub-beam from the beam splitter, and a photodetector, wherein a reflected first sub-beam from the fixed mirror and a reflected second sub-beam from the scanning MEMS mirror recombine at the beam splitter and become directed to the photodetector. According to one embodiment, the photodetector is a MEMS-based IR detector. In addition, the MEMS-based IR detector can be an un-cooled IR detector having a capacitive sensing structure.

Abstract translation: 提供了基于MEMS的傅里叶变换（FT）光谱仪。 根据实施例，基于MEMS的FT光谱仪是FT红外（FTIR）光谱仪。 FT分光计可以包括分束器，其被定位成接收来自光源的入射光束，并将入射光束分成第一子光束和第二子光束，固定镜定位成从光束接收第一子光束 分离器，定位成从分束器接收第二子光束的扫描MEMS镜和光电检测器，其中来自固定镜的反射的第一子光束和来自扫描MEMS镜的反射的第二子光束在光束处复合 分离器并且被引导到光电检测器。 根据一个实施例，光电检测器是基于MEMS的IR检测器。 此外，基于MEMS的IR检测器可以是具有电容感测结构的未冷却的IR检测器。

公开(公告)号：US07903257B2

公开(公告)日：2011-03-08

申请号：US11954794

申请日：2007-12-12

Applicant: Johannes F. de Boer ,  Guillermo J. Tearney ,  Brett Eugene Bouma

Inventor： Johannes F. de Boer ,  Guillermo J. Tearney ,  Brett Eugene Bouma

IPC: G01B11/02 ,  G01B9/02 ,  G01J3/45

CPC classification number: G01B9/02007 ,  A61B5/0059 ,  A61B5/0066 ,  A61B5/7257 ,  G01B9/02008 ,  G01B9/0201 ,  G01B9/02032 ,  G01B9/02044 ,  G01B9/02045 ,  G01B9/02079 ,  G01B9/0209 ,  G01B9/02091 ,  G01B2290/45 ,  G01N21/4795

Abstract: Apparatus and method for increasing the sensitivity in the detection of optical coherence tomography and low coherence interferometry (“LCI”) signals by detecting a parallel set of spectral bands, each band being a unique combination of optical frequencies. The LCI broad bandwidth source is split into N spectral bands. The N spectral bands are individually detected and processed to provide an increase in the signal-to-noise ratio by a factor of N. Each spectral band is detected by a separate photo detector and amplified. For each spectral band the signal is band pass filtered around the signal band by analog electronics and digitized, or, alternatively, the signal may be digitized and band pass filtered in software. As a consequence, the shot noise contribution to the signal is reduced by a factor equal to the number of spectral bands. The signal remains the same. The reduction of the shot noise increases the dynamic range and sensitivity of the system.

Abstract translation: 通过检测并行的一组光谱带来增加光学相干断层扫描和低相干干涉测量（“LCI”）信号的灵敏度的装置和方法，每个频带是光频率的唯一组合。 LCI宽带宽源分为N个频谱带。 N个光谱带被单独检测和处理，以使信噪比增加N倍。每个光谱带由单独的光检测器检测并被放大。 对于每个光谱带，信号通过模拟电子装置在信号带周围进行带通滤波，并且被数字化，或者，信号可以被数字化并且在软件中进行带通滤波。 结果，对信号的散粒噪声贡献减小了等于光谱带数的因子。 信号保持不变。 喷射噪声的降低增加了系统的动态范围和灵敏度。

公开(公告)号：US07864327B1

公开(公告)日：2011-01-04

申请号：US12351639

申请日：2009-01-09

Applicant: Dong Chen

Inventor： Dong Chen

IPC: G01B9/02 ,  G01B11/02 ,  G01J3/45

CPC classification number: G01B9/02079 ,  G01B9/02083 ,  G01B9/0209 ,  G01J3/45

Abstract: Sinusoidal in-phase and in-quadrature signals at a given spatial frequency are combined with the irradiance signals generating a correlogram of interest and integrated over the length of the correlogram data-acquisition scan. The integration outputs are then used to calculate the amplitude and the phase of the correlogram signal at the selected spatial frequency, thereby producing targeted spectral information. The signal generator used to generate the in-phase and in-quadrature sinusoidal signals may be scanned advantageously through any desired range of spatial frequencies, thereby producing corresponding amplitude and phase spectral information for the correlogram. Because the procedure produces spectral information independently of the number of data frames acquired during the interferometric scan, it is materially more rapid than conventional FFT analysis.

Abstract translation: 将给定空间频率处的正弦同相和正交信号与辐照度信号组合，产生感兴趣的相关图并在相关数据采集扫描的长度上积分。 然后，积分输出用于计算所选空间频率处的相关信号的幅度和相位，从而产生目标光谱信息。 用于产生同相和正交正弦信号的信号发生器可以有利地通过任何期望的空间频率范围进行扫描，由此产生相应的幅度和相位光谱信息。 因为该过程产生与干涉扫描期间获取的数据帧数量无关的光谱信息，因此它比传统的FFT分析快得多。

公开(公告)号：US20100290055A1

公开(公告)日：2010-11-18

申请号：US12779236

申请日：2010-05-13

Applicant: Kyong-Hon Kim ,  Seoung-Hun Lee ,  Seung-Hwan Kim ,  El-Hang Lee

Inventor： Kyong-Hon Kim ,  Seoung-Hun Lee ,  Seung-Hwan Kim ,  El-Hang Lee

IPC: G01J3/45

CPC classification number: G01N21/636 ,  G01N21/1717 ,  G01N21/21 ,  G01N21/23 ,  G01N21/45 ,  G01N2021/1721

Abstract: Measuring of an electro-optic coefficient and a thermo-optic coefficient of an optical device and an optical material, and more specifically, to measurement systems and methods of evaluating the electro-optic and thermo-optic coefficients by using interference fringe measurement techniques, wherein those optical characteristics can be precisely measured over a wide wavelength intended without using a complicated measuring equipment. The system for measuring an electro-optic coefficient includes: a light source for outputting an optical beam of multi-wavelengths, an optical interferometer including an optical beam splitter for dividing the optical beam received from the light source into two separate beams, a reference arm for receiving any one of the divided optical beams, a sample arm for receiving the other of the divided optical beams and applying a voltage to an optical sample to be measured by being connected to the optical sample, and an optical beam combiner for combining and mutually interfering optical beams that are output through the reference arm and the sample arm, and an optical spectrum analyzing device for receiving the mutually interfered optical beam from the optical interferometer and analyzing a spectrum of the mutually interfered optical beam.

Abstract translation: 测量光学器件和光学材料的电光系数和热光学系数，更具体地说，涉及通过使用干涉条纹测量技术来评估电光和热光学系数的测量系统和方法，其中 可以在不使用复杂的测量设备的情况下在宽的波长上精确地测量这些光学特性。 用于测量电光系数的系统包括：用于输出多波长光束的光源;光干涉仪，包括用于将从光源接收的光束分成两束单独光束的光束分离器;参考臂 用于接收分割光束中的任何一个，用于接收另外的划分的光束并通过连接到光学样本向待测量的光学样本施加电压的采样臂以及用于组合和相互的光束组合器 通过参考臂和样本臂输出的干涉光束，以及用于从光学干涉仪接收相互干涉的光束并分析相互干涉的光束的光谱的光谱分析装置。

公开(公告)号：US07813886B2

公开(公告)日：2010-10-12

申请号：US11999375

申请日：2007-12-04

Applicant: Sze Meng Tan

Inventor： Sze Meng Tan

IPC: G06F19/00 ,  G01J3/45

CPC classification number: G01J9/02 ,  H01S5/0687

Abstract: Improved calibration of a dual-etalon frequency monitor having x-y outputs is provided. An ellipse is fit to the (x,y) points from a set of calibration data. For each (x,y) point, an angle θ is determined. A linear fit of frequency to θ is provided. Differences between this linear fit and the determined values of θ are accounted for by including a spline fit to this difference in the calibration.

Abstract translation: 提供了具有x-y输出的双标准器频率监视器的改进校准。 椭圆适合于一组校准数据的（x，y）点。 对于每个（x，y）点，角度和角度; 决心，决意，决定。 频率线性拟合到＆thetas; 被提供。 这种线性拟合与确定的值之间的差异; 通过在校准中包括样条曲线适应差异来计算。