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    Noise cancellation in fourier transform spectrophotometry
    51.
    发明授权
    Noise cancellation in fourier transform spectrophotometry 有权
    傅立叶变换分光光度法中的噪声消除

    公开(公告)号：US07903252B2

    公开(公告)日：2011-03-08

    申请号：US11845580

    申请日：2007-08-27

    Applicant: David W. Larsen ,  Zhi Xu

    Inventor： David W. Larsen ,  Zhi Xu

    IPC: G01B9/02 ,  G01J3/45 ,  G01N21/00

    CPC classification number: G01J3/02 ,  G01J3/0262 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/42 ,  G01J3/45 ,  G01J2003/425 ,  G01N21/274 ,  G01N21/31 ,  G01N2021/3137 ,  G01N2201/0227 ,  G01N2201/127

    Abstract: Increasing signal to noise ratio in optical spectra obtained by spectrophotometers. An interferometer introduces interference effects into a source light beam. A dual beam configuration splits the source beam having the interference effects into a reference beam and a sample beam. The reference beam interacts with a reference substance and is detected by a reference detector. The sample beam interacts with a sample substance and is detected by a sample detector. An optical spectra of the sample is based on the difference between the detected reference beam and the detected sample beam.

    Abstract translation: 通过分光光度计获得的光谱增加信噪比。 干涉仪将干扰效应引入源光束。 双光束配置将具有干涉效应的源光束分解成参考光束和样本光束。 参考光束与参考物质相互作用，并由参考检测器检测。 样品束与样品物质相互作用，并由样品检测器检测。 样品的光谱基于检测到的参考光束和检测到的样品光束之间的差异。

    Multispectral reflectometer
    52.
    发明授权
    Multispectral reflectometer 失效
    多光谱反射计

    公开(公告)号：US5517302A

    公开(公告)日：1996-05-14

    申请号：US231445

    申请日：1994-04-20

    Applicant: Thornton Stearns ,  Subhash C. Sarkar

    Inventor： Thornton Stearns ,  Subhash C. Sarkar

    IPC: G01J1/18 ,  G01J1/44 ,  G01J3/02 ,  G01J3/18 ,  G01J3/42 ,  G01N21/47 ,  G01J3/28

    CPC classification number: G01N21/474 ,  G01J3/42 ,  G01J2001/182 ,  G01J2001/444 ,  G01J2003/421 ,  G01J2003/425 ,  G01J3/0221 ,  G01J3/1838 ,  G01N2021/4742

    Abstract: A reflectometer for measuring absorption of light in selected regions of the light spectrum by a diffuse reflector. The reflectometer is adapted to precisely measure absorption resulting from the constituents present in body fluids. The sample to be measured is illuminated by a focussed light source at an angle of 45.degree. to its surface. The light diffusely reflected about the normal to the sample falls on a small round bundle of optical fibers. At the opposite end of the bundle, the fibers are arranged into a narrow rectangle. This rectangle forms the entrance slit for a concave holographic diffraction grating. The grating forms images of this entrance slit spectrally separated over a flat field suitable for recording the spectrum on film or on an array of discrete detectors.

    Abstract translation: 用于通过漫反射器测量光谱的选定区域中的光的吸收的反射计。 反射计适用于精确测量由体液中存在的成分引起的吸收。 要测量的样品被聚焦光源以与其表面成45度的角度照射。 围绕样品的法线漫反射的光落在小圆形光纤束上。 在束的另一端，纤维被布置成窄的矩形。 该矩形形成凹面全息衍射光栅的入口狭缝。 光栅形成在适合于在胶片上或在离散检测器阵列上记录光谱的平坦场上光谱分离的入口狭缝的图像。

    Multispectral reflectometer
    53.
    发明授权
    Multispectral reflectometer 失效
    多光谱反射计

    公开(公告)号：US5262840A

    公开(公告)日：1993-11-16

    申请号：US781

    申请日：1993-01-04

    Applicant: Thornton Stearns ,  Subhash C. Sarkar

    Inventor： Thornton Stearns ,  Subhash C. Sarkar

    IPC: G01J1/18 ,  G01J1/44 ,  G01J3/02 ,  G01J3/18 ,  G01J3/42 ,  G01N21/47 ,  G01J3/04

    CPC classification number: G01J3/42 ,  G01N21/474 ,  G01J2001/182 ,  G01J2001/444 ,  G01J2003/421 ,  G01J2003/425 ,  G01J3/0221 ,  G01J3/1838 ,  G01N2021/4742

    Abstract: A reflectometer for measuring absorption of light in selected regions of the light spectrum by a diffuse reflector. The reflectometer is adapted to precisely measure absorption resulting from the constituents present in body fluids. The sample to be measured is illuminated by a focused light source at an angle of 45.degree. to its surface. The light diffusely reflected about the normal to the sample falls on a small round bundle of optical fibers at the opposite end of the bundle, the fibers are arranged into a narrow rectangle. This rectangle forms the entrance slit for a concave holographic diffraction grating. The grating forms images of this entrance slit spectrally separated over a flat field suitable for recording the spectrum on film or on an array of discrete detectors.

    Abstract translation: 用于通过漫反射器测量光谱的选定区域中的光的吸收的反射计。 反射计适用于精确测量由体液中存在的成分引起的吸收。 要测量的样品被聚焦光源以与其表面成45度的角度照射。 围绕样品的法线漫反射的光落在束的相对端的小圆形光纤束上，纤维被排列成窄的矩形。 该矩形形成凹面全息衍射光栅的入口狭缝。 光栅形成在适合于在胶片上或在离散检测器阵列上记录光谱的平坦场上光谱分离的入口狭缝的图像。

    Optical attachment for variable angle reflection spectroscopy
    54.
    发明授权
    Optical attachment for variable angle reflection spectroscopy 失效
    用于可变角度反射光谱的光学附件

    公开(公告)号：US5048970A

    公开(公告)日：1991-09-17

    申请号：US546081

    申请日：1990-06-29

    Applicant: Milan Milosevic ,  Nicolas J. Harrick

    Inventor： Milan Milosevic ,  Nicolas J. Harrick

    IPC: G01J3/02 ,  G01J3/42 ,  G01N21/47 ,  G01N21/55

    CPC classification number: G01N21/55 ,  G01J3/02 ,  G01J3/0216 ,  G01J3/0237 ,  G01J3/0291 ,  G01N21/474 ,  G01J2003/425 ,  G01N2021/4723

    Abstract: A vaariable angle reflection accessory for use in reflection spectrometry characterized by a pair of fixed ellipsoidal reflectors positioned over the sample surface and a pair of rotatable plane mirrors positions at opposite sides of the sample surface. The spectrometer beam is brought to a focus at the first plane mirror, from which it is reflected off the first ellipsoidal reflector to a focus at the sample surface. The reflected beam follows a corresponding path back to the spectrometer. Rotating the mirrors in unison causes the beam angle of incidence on the sample surface to vary over a wide range while maintaining optical alignments and continuing to center the radiation on the same sample area.

    Abstract translation: 用于反射光谱法的变角反射附件，其特征在于位于样品表面上方的一对固定椭圆体反射器和位于样品表面相对两侧的一对可转动的平面镜。 光谱仪光束在第一平面镜处被聚焦，从第一平面反射镜将其从第一椭圆反射器反射到样品表面处的焦点。 反射光束跟随相应的路径回到光谱仪。 一致地转动反射镜导致样品表面上的光束入射角在宽范围内变化，同时保持光学对准并且继续将辐射对准在相同的样品区域上。

    Material analysis using reflected light
    55.
    发明授权
    Material analysis using reflected light 失效
    使用反射光进行材料分析

    公开(公告)号：US4629322A

    公开(公告)日：1986-12-16

    申请号：US665893

    申请日：1984-10-29

    Applicant: John H. Pollard

    Inventor： John H. Pollard

    IPC: G01J3/28 ,  G01J3/42

    CPC classification number: G01J3/42 ,  G01J2003/2859 ,  G01J2003/425

    Abstract: An apparatus and method for determining the relative proportions of two eents of a ternary compound from light reflected off a sample of the compound. The light is varied in wavelength and a graph of reflectance vs wavelength is stored. For a given compound of general form A.sub.x B.sub.1-x C, x may be determined by converting the stored graph to a graph of reflectance vs photon energy of the light, determining the photon energy of the light for the longest wavelength peak on the converted graph, and computing x from the equation E.sub.1 =a+bx+cx.sup.2 wherein a, b, and c are predetermined constants, and E.sub.1 is the photon energy in electron volts of the peak of interest.

    Abstract translation: 用于确定三元化合物的两种元素与化合物样品反射的光的相对比例的装置和方法。 光在波长上变化，并且存储反射率与波长的曲线图。 对于一般形式的AxB1-xC的给定化合物，可以通过将存储的图转换成光的反射率与光子能量的曲线图，确定转换图上最长波长峰的光的光子能量来确定x，以及 从等式E1 = a + bx + cx2计算x，其中a，b和c是预定常数，E1是感兴趣峰的电子伏特中的光子能量。

    Portable instant display and analysis reflectance spectrometer
    56.
    发明授权
    Portable instant display and analysis reflectance spectrometer 失效
    便携式即时显示和分析反射光谱仪

    公开(公告)号：US4560275A

    公开(公告)日：1985-12-24

    申请号：US428311

    申请日：1982-09-29

    Applicant: Alexander F. H. Goetz

    Inventor： Alexander F. H. Goetz

    IPC: G01J3/02 ,  G01J3/04 ,  G01J3/12 ,  G01J3/28 ,  G01J3/36 ,  G01J3/42 ,  G01N21/31

    CPC classification number: G01N21/314 ,  G01J3/02 ,  G01J3/0232 ,  G01J3/0272 ,  G01J3/0286 ,  G01J3/0294 ,  G01J3/04 ,  G01J3/28 ,  G01J3/36 ,  G01J2003/1217 ,  G01J2003/123 ,  G01J2003/2833 ,  G01J2003/425 ,  G01J3/2803

    Abstract: A portable analysis spectrometer (10) for field mineral identification is coupled to a microprocessor (11) and memory (12) through a bus (13) and A/D converter (14) to display (16) a spectrum of reflected radiation in a band selected by an adjustable band spectrometer (20) and filter (23). A detector array (21) provides output signals at spaced frequencies within the selected spectrometer band which are simultaneously converted to digital form for display. The spectrum displayed is compared with a collection of spectra for known minerals. That collection is stored in memory and selectively displayed with the measured spectrum, or stored in a separate portfolio. In either case, visual comparison is made. Alternatively, the microprocessor may use an algorithm to make the comparisons in search for the best match of the measured spectrum with one of the stored spectra to identify the mineral in the target area.

    Abstract translation: 用于现场矿物识别的便携式分析光谱仪（10）通过总线（13）和A / D转换器（14）耦合到微处理器（11）和存储器（12），以将反射辐射的光谱显示（16） 频带由可调频带光谱仪（20）和滤波器（23）选择。 检测器阵列（21）以所选择的光谱仪带内的间隔的频率提供输出信号，其同时转换成数字形式用于显示。 所显示的光谱与已知矿物的光谱集合进行比较。 该集合存储在存储器中并选择性地显示测量光谱，或存储在单独的组合中。 在任一情况下，进行视觉比较。 或者，微处理器可以使用算法进行比较，以搜索所测量的光谱与所存储的光谱之一的最佳匹配以识别目标区域中的矿物质。

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