Enhancing selectivity and/or sensitivity of spectroscopic measurements in media
    222.
    发明授权
    Enhancing selectivity and/or sensitivity of spectroscopic measurements in media 失效
    提高光谱测量在介质中的选择性和/或灵敏度

    公开(公告)号:US07742166B2

    公开(公告)日:2010-06-22

    申请号:US11740767

    申请日:2007-04-26

    Abstract: An apparatus for enhancing the selectivity for spectroscopic measurements of analytes in a turbid medium is described. In one example, spatial filters are used to select only certain radii from the medium to be imaged. This selection is accomplished by placing an optical obstruction on the surface of the medium or at an image plane of the surface later in the optical imaging system. In one implementation, this is achieved by placing a fiber bundle at an image plane of the collecting optical system and then using a spacer of appropriate size at the center of the fiber bundle to act as a central obstruction.

    Abstract translation: 描述了用于提高浑浊介质中分析物的光谱测量的选择性的装置。 在一个示例中,空间滤波器用于仅从要成像的介质中选择某些半径。 该选择通过在光学成像系统中稍后将光学障碍物放置在介质的表面或表面的像平面上来实现。 在一个实施方案中,这是通过将纤维束放置在收集光学系统的像平面上,然后在纤维束的中心使用适当尺寸的间隔件来充当中心障碍物来实现的。

    Method for using a photonic crystal fiber as a Raman biosensor
    223.
    发明授权
    Method for using a photonic crystal fiber as a Raman biosensor 失效
    使用光子晶体光纤作为拉曼生物传感器的方法

    公开(公告)号:US07738097B2

    公开(公告)日:2010-06-15

    申请号:US12174313

    申请日:2008-07-16

    Abstract: A method is provided for biosensing using a photonic crystal fiber having a hollow core. The method includes: designating an analyte of interest; determining a wavelength for an excitation light source which generates a Raman spectrum when incident upon the analyte of interest; selecting a photonic crystal fiber that would guide the light when the fiber is non-selectively filled with a solvent hosting the analyte of interest; non-selectively filling a photonic crystal fiber with the solvent hosting the analyte of interest; interrogating the analyte of interest by coupling light from the light source to the photonic crystal fiber; and analyzing the light output from the photonic crystal fiber for Raman fingerprints.

    Abstract translation: 提供一种使用具有中空芯的光子晶体纤维进行生物传感的方法。 该方法包括:指定感兴趣的分析物; 确定激发光源的波长,其在入射到感兴趣的分析物时产生拉曼光谱; 选择光纤晶体光纤,当光纤被非选择性地填充托管目标分析物的溶剂时,该光子晶体光纤将引导光; 用选择感兴趣的分析物的溶剂非选择性填充光子晶体纤维; 通过将来自光源的光耦合到光子晶体光纤来询问感兴趣的分析物; 并分析拉曼指纹光子晶体光纤的光输出。

    Method and apparatus for biosensor spectral shift detection
    225.
    发明授权
    Method and apparatus for biosensor spectral shift detection 失效
    用于生物传感器光谱位移检测的方法和装置

    公开(公告)号:US07718440B2

    公开(公告)日:2010-05-18

    申请号:US11749073

    申请日:2007-05-15

    Abstract: Performing high-resolution determination of the relative shift of the spectral properties of a biosensor. The shift in the resonance peak of the biosensor is indicative of the amount of material bound to the surface of the biosensor. A preferred biosensor is a Guided Mode Resonant Filter Biosensor (GMRFB). In one aspect of the invention, curve fitting is used to determine the relative location of the spectrum of the unexposed biosensor with respect to those spectra that are altered (e.g., shifted) by the presence of materials bound to the surface of the biosensor. In an alternative embodiment, the cross correlation function is used to detect spectral peak offsets between a reference spectrum and a spectrum measured from an exposed biosensor. In yet another alternative, maximal likelihood estimation techniques are used to determine the spectral shift or offs.

    Abstract translation: 对生物传感器的光谱特性进行相对偏移的高分辨率测定。 生物传感器的共振峰的偏移指示与生物传感器的表面结合的材料的量。 优选的生物传感器是引导模式谐振滤波器生物传感器(GMRFB)。 在本发明的一个方面,使用曲线拟合来确定未暴露的生物传感器的光谱相对于通过存在与生物传感器的表面结合的材料而被改变(例如,偏移)的那些光谱的相对位置。 在替代实施例中,互相关函数用于检测参考光谱和从暴露的生物传感器测量的光谱之间的光谱峰值偏移。 在另一替代方案中,使用最大似然估计技术来确定频谱偏移或偏移。

    SYSTEMS AND METHODS FOR DETECTING CHEMICAL AND BIOLOGICAL SUBSTANCES
    226.
    发明申请
    SYSTEMS AND METHODS FOR DETECTING CHEMICAL AND BIOLOGICAL SUBSTANCES 有权
    用于检测化学和生物物质的系统和方法

    公开(公告)号:US20100085564A1

    公开(公告)日:2010-04-08

    申请号:US12403522

    申请日:2009-03-13

    Abstract: A method for detecting an ingredient in a food product or detecting a disease includes allowing a food sample solution obtained from a food product or a body fluid from an individual to come to contact with a nano-scale surface structure in a sensor, wherein the nano-scale surface structure comprises a plurality of columns over a substrate or a plurality of holes in a substrate. The method includes illuminating the food sample solution or the body fluid on the nano-scale surface structure on the sensor by a laser beam; obtaining a Raman spectrum from the scattered light using a spectral analyzer; and identifying the spectral signature in the Raman spectrum to determine the existence of the chemical substance in the food product or identifying a disease in the individual.

    Abstract translation: 用于检测食品中的成分或检测疾病的方法包括使得从个体的食品或体液获得的食品样品溶液与传感器中的纳米级表面结构接触,其中所述纳米 尺寸表面结构包括在衬底上的多个柱或衬底中的多个孔。 该方法包括通过激光束照射传感器上的纳米级表面结构上的食物样品溶液或体液; 使用光谱分析仪从散射光获得拉曼光谱; 并确定拉曼光谱中的光谱特征,以确定食品中化学物质的存在或识别个体中的疾病。

    Multi-wavelength light source for spectroscopy
    228.
    发明申请
    Multi-wavelength light source for spectroscopy 有权
    用于光谱的多波长光源

    公开(公告)号:US20090303475A1

    公开(公告)日:2009-12-10

    申请号:US12157142

    申请日:2008-06-06

    Abstract: The invention discloses a multi-wavelength semiconductor light source comprising a plurality of semiconductor light sources mounted on a silicon sub-carrier and emitting radiation spanning a wavelength range. In preferred embodiments, these sources are configured in a linear and circular array. The radiation is coupled to a waveguide array disposed on the same silicon subcarrier, with a lower cladding of silicon dioxide and deposited core layer which is preferably the spin-on epoxy resin SU-8. Output from the waveguide array provides a compact multi-wavelength laser source with wide tuning range via a plurality of laser sources. An output spatial span of the waveguide array is smaller than an input spatial span and sufficiently small to probe the properties of a sample. A compact system for optical spectroscopy is constructed from the multi-wavelength semiconductor light source, a means for directing radiation from the source to a sample, and an optical detector configured to detect one of a radiation reflected from and transmitted through said sample. In various preferred embodiments, the semiconductor light sources can comprise lasers, light-emitting diodes, and superluminescent diodes.The system for optical spectroscopy can be used in a variety of applications including the analysis of in-vivo human tissue, agricultural samples, and pharmaceutical samples. Typical wavelength ranges for these and other applications include 650-1000 nm, 700-1700 nm, and 1100-2500 nm.

    Abstract translation: 本发明公开了一种多波长半导体光源,其包括安装在硅副载体上并发射跨越波长范围的辐射的多个半导体光源。 在优选实施例中,这些源被配置成线性和圆形阵列。 辐射耦合到设置在相同的硅子载波上的波导阵列,其中二氧化硅的下包层和沉积的芯层,其优选是旋涂环氧树脂SU-8。 来自波导阵列的输出通过多个激光源提供具有宽调谐范围的紧凑的多波长激光源。 波导阵列的输出空间跨度小于输入空间跨度,足够小以探测样品的性质。 用于光学光谱的紧凑系统由多波长半导体光源构成,用于将来自源的辐射引导到样本的装置,以及被配置为检测从所述样品反射并透过所述样品的辐射中的一种的光学检测器。 在各种优选实施例中,半导体光源可以包括激光器,发光二极管和超发光二极管。 光谱学系统可用于各种应用,包括体内人体组织,农业样品和药物样品的分析。 这些和其他应用的典型波长范围包括650-1000nm,700-1700nm和1100-2500nm。

    MODULATION BASED OPTICAL SPECTRUM ANALYZER
    229.
    发明申请
    MODULATION BASED OPTICAL SPECTRUM ANALYZER 有权
    基于调制的光谱分析仪

    公开(公告)号:US20090297142A1

    公开(公告)日:2009-12-03

    申请号:US12127507

    申请日:2008-05-27

    CPC classification number: G01J3/433 G01J3/02 G01J3/0218 G01J2003/1265

    Abstract: An optical spectrum analyzer and a method of spectrally analyzing an optical signal. The optical spectrum analyzer includes a wave shaper such as an optical modulator that shapes an optical signal, a dispersive element such as a dispersive fiber in which the shaped optical signal is dispersed, a detector that provides an output signal indicative of the dispersed shaped optical signal, and a signal processor that analyzes the output signal, for example by calculating a transform such as an inverse Fourier transform or a Fourier transform of the output signal, to provide a frequency spectrum of the optical signal.

    Abstract translation: 光谱分析仪和光信号的光谱分析方法。 光谱分析仪包括诸如光调制器的波整形器,其形成光信号,分散元件如分散光纤,其中分布有成形光信号的检测器,提供表示分散的成形光信号的输出信号 以及分析输出信号的信号处理器,例如通过计算诸如反相傅立叶变换或输出信号的傅里叶变换的变换来提供光信号的频谱。

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