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    Spectrometer
    131.
    发明专利
    Spectrometer 有权
    光谱仪

    公开(公告)号：JP2012007890A

    公开(公告)日：2012-01-12

    申请号：JP2010141229

    申请日：2010-06-22

    Applicant: Seiko Epson Corp ,  セイコーエプソン株式会社

    Inventor： FUNAMOTO TATSUAKI

    IPC: G01J3/02 ,  G01J3/26 ,  G01N21/27

    CPC classification number: G01J3/027 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01J3/32 ,  G01J3/36 ,  G01J3/433 ,  G01J2003/1213 ,  G01N21/55 ,  G01N21/59

    Abstract: PROBLEM TO BE SOLVED: To improve measurement accuracy of a spectrometer without using, for example, an expensive optical bandpass filter.SOLUTION: The spectrometer comprises: an optical bandpass filter part 300 having from a first wavelength range to an n-th wavelength range (n is an integer of 2 or more) being predetermined wavelength widths as spectral bands; a light receiving part 400 for receiving light from the optical bandpass filter part; a correction operating part 500 for performing a correction operation which corrects light receiving signals obtained based on output signals from the light receiving part; and a signal processing part 600 for performing a predetermined signal processing based on the light receiving signals after the correction by the correction operating part 500. The correction operating part 500 corrects the light receiving signals based on a change of the spectral distribution of the light receiving signals.

    Abstract translation: 要解决的问题：为了提高光谱仪的测量精度，而不使用例如昂贵的光学带通滤光器。 光谱仪包括：具有作为光谱带的预定波长宽度的具有从第一波长范围到第n波长范围（n为2以上的整数）的光学带通滤波器部300; 用于接收来自光学带通滤波器部分的光的光接收部分400; 校正操作部分500，用于执行校正基于来自光接收部分的输出信号获得的光接收信号的校正操作; 以及信号处理部600，用于基于校正操作部500的校正之后的光接收信号进行预定的信号处理。校正操作部500基于光接收的频谱分布的变化来校正光接收信号 信号。 版权所有（C）2012，JPO＆INPIT

    Wavelength sweeping spectroscope using mirror vibrated by tuning fork
    135.
    发明专利
    Wavelength sweeping spectroscope using mirror vibrated by tuning fork 失效
    波纹振荡器使用镜面振荡器振动

    公开(公告)号：JPS617427A

    公开(公告)日：1986-01-14

    申请号：JP16488284

    申请日：1984-08-08

    Applicant: Agency Of Ind Science & Technol ,  Anritsu Corp

    Inventor： NAKAMURA KEIGO ,  IZUMI TAKUSUKE ,  SEKINO SHIYOUZOU ,  SHIMIZU ASAJI ,  TAKEDA NOBUAKI

    IPC: G01J3/06 ,  G01J3/433

    CPC classification number: G01J3/433

    Abstract: PURPOSE:To emit light, whose wavelength is swept in a sine wave state with respect to time, by deflecting a light path in a spectroscope by the vibration of a tunin fork and dividing the luminous flux, which is guided into the spectroscope and has a spectral structure. CONSTITUTION:A diffraction grating 23 as a spectroscopic element, which receives reflected luminous flux from a collimator mirror 22 and divides the flux, is arranged in a light path of the luminous flux. The luminous flux, whose wavelength is scattered by said spectroscopic element, advences to a collector mirror 25. A wavelength modulator 29' using amirror utilizes a U shaped tuning fork 30 having two legs. A reflecting mirror 31 is vibrated by a driving mechanism at a frequency in the vicinity of the natural frequency of the tuning fork. The path of the liminous flux, which is introduced in the main body of the spectroscope, is deflected by the vibration of the reflecting mirror 31.

    Abstract translation: 目的：为了发射波长相对于时间在正弦波状态下扫描的光，通过将金枪鱼叉的振动偏转在分光镜中的光路，并将被引导到分光镜中的光通量分开， 光谱结构。 构成：作为分光元件的衍射光栅23被配置在光束的光路中，该衍射光栅23从准直镜22接收反射光束并分割通量。 其波长由所述分光元件散射的光通量向收集器反射镜25倾斜。使用反射镜的波长调制器29'利用具有两个支腿的U形音叉30。 反射镜31通过驱动机构以音叉固有频率附近的频率振动。 导入分光镜主体的液流通路被反射镜31的振动偏转。

    OPTICAL METHANE DETECTOR USING HIGHER HARMONIC BACKGROUND FUNCTIONS FOR DETERMINING THE METHANE CONCENTRATION
    139.
    发明公开
    OPTICAL METHANE DETECTOR USING HIGHER HARMONIC BACKGROUND FUNCTIONS FOR DETERMINING THE METHANE CONCENTRATION 审中-公开
    优质甲基纤维素，维他命OBERSCHWINGUNGEN DES HINTERGRUNDSIGNALS ZUR BESTIMMUNG DER METHANKONZENTRATION VERWENDET

    公开(公告)号：EP3139152A1

    公开(公告)日：2017-03-08

    申请号：EP15183828.1

    申请日：2015-09-04

    Applicant: Siemens Aktiengesellschaft

    Inventor： The designation of the inventor has not yet been filed

    IPC: G01N21/3504 ,  G01J3/433 ,  G01N21/39

    CPC classification number: G01N21/3504 ,  G01J3/28 ,  G01J3/433 ,  G01N21/39 ,  G01N2021/3155 ,  G01N2021/3513

    Abstract: Optical methane detector for the detection of the methane content of a gas, comprising:
    a reference gas cell;
    a light source to illuminate said gas and said reference gas cell with visible or infrared radiation;
    a light detector to capture parts of said radiation reflected back from a solid surface;
    a control unit to control the light source to modulate the wavelength of said radiation;
    wherein
    the control unit performs an analysis of the signal of the light detector to calculate the transmittance of the gas and from this the methane concentration in the gas utilizing at least two of the harmonic spectra of the light detector signal corresponding to multiples of a modulation frequency of the wavelength;
    the control unit performs a first measurement using the signal of the light detector corresponding to the reference cell and calculates harmonic background functions comprising at least a second and third order harmonic function representing the behavior of the signal without influence of methane in the gas;
    the control unit performs a second measurement using the signal of the light detector corresponding to the gas and performs a curve fitting algorithm that fits precalculated harmonic functions representing the optical transmission spectrum of the gas with the methane concentration as a fitting parameter together with the harmonic background functions to the measured values, the precalculated harmonic functions comprising at least the second and third order harmonic function corresponding to multiples of a modulation frequency of the wavelength.

    Abstract translation: 用于检测气体的甲烷含量的光学甲烷检测器，包括：参考气体池; 用可见光或红外辐射照亮所述气体和所述参考气体单元的光源; 光检测器，用于捕获从固体表面反射回的所述辐射的部分; 控制单元，用于控制所述光源以调制所述辐射的波长; 其中所述控制单元对所述光检测器的信号进行分析以计算所述气体的透射率，并且利用所述光检测器信号的至少两个谐波谱对应于调制频率的倍数 的波长; 控制单元使用与参考单元相对应的光检测器的信号来执行第一测量，并且计算包括表示信号行为的至少二次谐波函数的谐波背景函数，而不影响气体中的甲烷; 控制单元使用与气体对应的光检测器的信号进行第二测量，并且执行曲线拟合算法，其将表示具有甲烷浓度的气体的光学透射光谱的预先计算的谐波函数与谐波背景一起拟合为拟合参数 对测量值起作用，所述预先计算的谐波函数至少包括对应于波长的调制频率的倍数的第二和第三阶谐波函数。

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