Background correction in emission spectra

    公开(公告)号:US09677934B2

    公开(公告)日:2017-06-13

    申请号:US14470875

    申请日:2014-08-27

    CPC classification number: G01J3/0297 G01J3/28 G01J3/443

    Abstract: A method for deriving a background-corrected portion of a measured optical emission spectrum comprising the steps of identifying two or more background correction points from the portion of the measured emission spectrum; deriving a background correction function fitted to the identified background correction points, and applying the background correction function to the portion of the measured emission spectrum so as to produce a background-corrected portion of the emission spectrum, wherein the background correction points are identified from the measured data points by consideration of the gradients between the measured data points.

    Infrared Imaging System with Automatic Referencing
    235.
    发明申请
    Infrared Imaging System with Automatic Referencing 有权
    具有自动参考的红外成像系统

    公开(公告)号:US20170003166A1

    公开(公告)日:2017-01-05

    申请号:US14788561

    申请日:2015-06-30

    Abstract: A method and apparatus for obtaining reference samples during the generation of a mid-infrared (MW) image without requiring that the sample being imaged be removed is disclosed. A tunable MIR laser generates a light beam that is focused onto a specimen on a specimen stage that moves the specimen in a first direction. An optical assembly includes a scanning assembly having a focusing lens and a mirror that moves in a second direction, different from the first direction, relative to the stage such that the focusing lens maintains a fixed distance between the focusing lens and the specimen stage. A light detector measures an intensity of light leaving the point on the specimen. A controller forms an image from the measured intensity. A reference stage is positioned such that the mirror moves over the reference stage in response to a command so that the controller can also make a reference measurement.

    Abstract translation: 公开了在生成中红外(MW)图像期间获得参考样本而不需要去除被成像的样品的方法和装置。 可调谐的MIR激光产生聚焦在样品台上的试样上的光束,该试样台沿第一方向移动试样。 光学组件包括具有聚焦透镜和反射镜的扫描组件,所述聚焦透镜和反射镜相对于所述平台在与第一方向不同的第二方向上移动,使得聚焦透镜在聚焦透镜和样品台之间保持固定的距离。 光检测器测量离开样品点的光的强度。 控制器根据测量的强度形成图像。 定位参考台,使得反射镜响应于命令而在参考平台上移动,使得控制器也可进行参考测量。

    Method and apparatus for testing materials
    236.
    发明授权
    Method and apparatus for testing materials 有权
    测试材料的方法和装置

    公开(公告)号:US09523606B2

    公开(公告)日:2016-12-20

    申请号:US14807273

    申请日:2015-07-23

    Inventor: Laid Adda

    Abstract: A method and apparatus for testing materials for testing materials using infrared spectrometry. Calibration of an infrared spectrometer for use in testing materials including the steps of: selecting variables which have the potential to influence the physical characteristics of a composite used in the aerospace industry, selecting values for each variable and inputting the variable and values into a design of experiments model, thereby obtaining a sample test matrix.

    Abstract translation: 使用红外光谱法测试材料的材料的方法和装置。 校准用于测试材料的红外光谱仪,包括以下步骤:选择可能影响航空航天工业中使用的复合材料的物理特性的变量,选择每个变量的值,并将变量和值输入到 实验模型,从而获得样本测试矩阵。

    SYSTEM AND METHOD TO MINIMIZE NONRANDOM FIXED PATTERN NOISE IN SPECTROMETERS
    237.
    发明申请
    SYSTEM AND METHOD TO MINIMIZE NONRANDOM FIXED PATTERN NOISE IN SPECTROMETERS 审中-公开
    在光谱仪中最小化非对称固定图形噪声的系统和方法

    公开(公告)号:US20160290864A1

    公开(公告)日:2016-10-06

    申请号:US15003891

    申请日:2016-01-22

    Abstract: This invention relates to a system and method to improve the signal to noise ratio (SNR) of optical spectrometers that are limited by nonrandom or fixed pattern noise. A signal from a sample is collected using a short test exposure, a total observation time to maximize SNR is calculated, and the total observation time is achieved by averaging multiple exposures whose time is selected based on the time dependent noise structure of the detector. Moreover, with a priori knowledge of the time dependent noise structure of the spectrometer, this method is easily automatable and can maximize SNR for a spectrum of an unknown compound without any user input.

    Abstract translation: 本发明涉及一种改善受非随机或固定模式噪声限制的光谱仪的信噪比(SNR)的系统和方法。 使用短测试曝光来收集来自样本的信号,计算最大化SNR的总观察时间,并且通过基于检测器的时间相关噪声结构选择时间的多次曝光来平均多次曝光来实现总观察时间。 此外,利用对光谱仪的时间依赖噪声结构的先验知识,该方法易于自动化,并且可以使未知化合物的光谱的SNR最大化而无需任何用户输入。

    IMAGE FORMING APPARATUS AND DIRTINESS DETECTION METHOD
    238.
    发明申请
    IMAGE FORMING APPARATUS AND DIRTINESS DETECTION METHOD 有权
    图像形成装置和DIRTINESS检测方法

    公开(公告)号:US20160263895A1

    公开(公告)日:2016-09-15

    申请号:US15061136

    申请日:2016-03-04

    Inventor: Ryohei KURI

    CPC classification number: B41J2/165 G01J3/0205 G01J3/0278 G01J3/0297 G01J3/524

    Abstract: A printer includes a printing section that ejects an ink, and a spectrometer that disperses incident light. The spectrometer includes a window section that transmits the light, an optical filter device, and a light receiving section. The optical filter device includes a variable wavelength interference filter as a dispersing element that disperses light transmitted by the window section. The light receiving section receives the light which is dispersed by the variable wavelength interference filter. A dirtiness of the window section is detected based on measured values corresponding to each of a plurality of wavelengths obtained by spectrally measuring light from a reference object, and reference values corresponding to each of the plurality of wavelengths.

    Abstract translation: 打印机包括喷射墨的打印部分和分散入射光的光谱仪。 光谱仪包括透光的窗口部分,滤光器装置和光接收部分。 滤光器装置包括可变波长干涉滤光器,作为分散由窗口部分透射的光的分散元件。 光接收部接收由可变波长干涉滤光器分散的光。 基于通过光谱测量来自参考对象的光获得的多个波长中的每个波长的测量值,以及对应于多个波长中的每一个的参考值,来检测窗口部分的灰尘。

    Method for Diagnosing Optical Spectrometers of Downhole Tools
    239.
    发明申请
    Method for Diagnosing Optical Spectrometers of Downhole Tools 有权
    诊断井下工具光谱仪的方法

    公开(公告)号:US20160178435A1

    公开(公告)日:2016-06-23

    申请号:US14577573

    申请日:2014-12-19

    CPC classification number: G01J3/0297 E21B47/01 E21B49/087 E21B49/10 G01V8/02

    Abstract: A method for analyzing the condition of a spectrometer is provided. In one embodiment, the method includes acquiring optical data from a spectrometer of a downhole tool during flushing of a flowline and selecting a data set from the acquired optical data. The method can also include estimating light scattering and optical drift for the spectrometer based on the selected data set and determining impacts of the estimated light scattering and optical drift for the spectrometer on measurement accuracy of a characteristic of a downhole fluid determinable through analysis of the downhole fluid using the spectrometer. Additional methods, systems, and devices are also disclosed.

    Abstract translation: 提供了一种分析光谱仪条件的方法。 在一个实施例中,该方法包括在冲洗流线期间从井下工具的光谱仪获取光学数据,并从所获取的光学数据中选择数据组。 该方法还可以包括基于所选择的数据集估计光谱仪的光散射和光漂移,并确定光谱仪的估计光散射和光漂移对通过井下分析可确定的井下流体特性的测量精度的影响 流体使用光谱仪。 还公开了附加的方法,系统和装置。

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