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    System and method for illumination source identification
    1.
    发明公开
    System and method for illumination source identification 审中-公开

    公开(公告)号：US20240219232A1

    公开(公告)日：2024-07-04

    申请号：US18335269

    申请日：2023-06-15

    申请人： Jacov Tutavac ,  Dubravko Babic

    发明人： Jacov Tutavac ,  Dubravko Babic

    IPC分类号： G01J3/02 ,  B64G1/66 ,  G01J3/06 ,  G01J3/12 ,  G01J3/42

    CPC分类号： G01J3/0294 ,  B64G1/66 ,  G01J3/0208 ,  G01J3/0275 ,  G01J3/06 ,  G01J3/12 ,  G01J3/42 ,  G01J2003/066 ,  G01J2003/1213

    摘要： A light detection module has N optical channels, each with an optical filter, a detector, and an amplifier; and an N×1 switch with N input ports each connected to one corresponding output port of each channel to receive an amplified detector output corresponding to a filtered optical intensity incident on that detector. The switch cycles between channels, connecting each amplified detector output in turn to the output port. An ADC samples a time dependent optical intensity signal from the switch, generating a corresponding ADC digital signal output. A microcontroller, connected to the N×1 switch and the ADC, controls acquisition by the ADC to provide a digital voltage data stream from each channel; making the average optical intensity value characterizing the voltage data stream available from each channel at a digital output port of the microcontroller, as N data values, characterizing the light incident on the N channels of the module.

    System for calibrating a monochromator
    3.
    发明授权
    System for calibrating a monochromator 失效
    用于校准单色仪的系统

    公开(公告)号：US4779216A

    公开(公告)日：1988-10-18

    申请号：US837438

    申请日：1986-03-07

    申请人： John B. Collins

    发明人： John B. Collins

    IPC分类号： G01J3/06 ,  G01J3/28 ,  G01C25/00 ,  G06F15/20

    CPC分类号： G01J3/28 ,  G01J2003/066 ,  G01J2003/2866

    摘要： A method for calibrating a monochromator to compensate for mechanical imperfections in its diffraction grating and grating drive assembly employs a two stage interactive procedure which permits the use of small (0.2 nm) spectral regions for the identification of emission lines. An iterative, self-consistent, discrete Fourier transform is used for the determination of multiple positioning correction terms. When the Fourier calculations are completed, the results of the calibration procedure are presented by the system to the analyst for acceptance. If accepted, the positioning error of the primary calibration line is measured, stored and used by the system to maintain a zero centered distribution of positioning errors each time the monochromator is reinitialized.

    摘要翻译： 用于校准单色仪以补偿其衍射光栅和光栅驱动组件中的机械缺陷的方法采用两级交互式过程，其允许使用小（0.2nm）光谱区域来识别发射线。 迭代，自相一致的离散傅里叶变换用于确定多个定位校正项。 当傅里叶计算完成时，校准程序的结果由系统提交给分析师进行验收。 如果接受，主要校准线的定位误差由系统测量，存储和使用，以便在每次单色仪重新初始化时保持定位误差的零中心分布。

    Dispersive spectrometry installation with multi-channel detection
    5.
    发明授权
    Dispersive spectrometry installation with multi-channel detection 失效
    具有多通道检测功能的分光光度仪安装

    公开(公告)号：US5164786A

    公开(公告)日：1992-11-17

    申请号：US720708

    申请日：1991-06-25

    申请人： Michel Delhaye ,  Edouard Da Silva ,  Bernard Roussel

    发明人： Michel Delhaye ,  Edouard Da Silva ,  Bernard Roussel

    IPC分类号： G01J3/36 ,  G01J3/06 ,  G01J3/28 ,  G01J3/32

    CPC分类号： G01J3/2803 ,  G01J3/06 ,  G01J2003/066 ,  G01J2003/2826 ,  G01J2003/2833 ,  G01J2003/2893 ,  G01J2003/2896 ,  G01J2003/326 ,  G01J3/0294 ,  G01J3/32

    摘要： The invention relates to a spectrometry installation comprising an inlet, optical fiber means suitable for receiving an inlet beam and delivering a spectrally dispersed image of the beam which image is limited to a selected spectral band, a multi-channel detection module receiving said spectral image, and processor means. The optical filter means are provided with a deflector stage. Control means are associated with the optical deflector means to define the spectral band in terms of center frequency and band width, and control means are associated therewith for displacing the spectral image over the detection module. An electronic control unit is provided to control the control means and to control the processor means in a plurality of operating modes, each of which comprises joint control of the selected spectral band, of the displacement of the spectral image, and of the processor means, for the purpose of selectively using a particular set of detector components.

    摘要翻译： 本发明涉及一种光谱测量装置，其包括入口，适于接收入射光束的光纤装置，并将该光束的光谱分散图像传送到所选择的光谱带，多通道检测模块接收所述光谱图像， 和处理器装置。 滤光器装置设置有偏转器级。 控制装置与光学偏转器装置相关联以根据中心频率和带宽限定光谱带，并且控制装置与其相关联，用于使检测模块上的光谱图像移位。 提供电子控制单元以控制控制装置并且以多个操作模式来控制处理器装置，每个操作模式包括所选频谱带的联合控制，频谱图像的位移以及处理器装置， 以便选择性地使用特定的一组检测器部件。

    Scanning monochromator
    6.
    发明授权
    Scanning monochromator 失效
    扫描单色仪

    公开(公告)号：US5096295A

    公开(公告)日：1992-03-17

    申请号：US664592

    申请日：1991-03-01

    申请人： Robert J. Krupa ,  Edward E. Owen ,  Stanley L. Shiller

    发明人： Robert J. Krupa ,  Edward E. Owen ,  Stanley L. Shiller

    IPC分类号： G01J3/06

    CPC分类号： G01J3/06 ,  G01J2003/063 ,  G01J2003/066

    摘要： In its preferred embodiment, a scanning monochromator uses a pulse-driven micro-stepping motor to drive a spectral-dispersion element via a reduction-gear harmonic drive. The motor is directly coupled to the input hub of the reduction-gear drive, and the output hub of the reduction-gear drive directly supports the spectral-dispersion element. By selecting a motor with a great number of steps per revolution, and a harmonic drive with a great reduction ratio, a resolution of 5 million pulsed steps is available, per single rotation of the output hub of the reduction-gear drive. This translates into more than 600,000 incremental angular-displacement steps over a usable 45.degree. range of dispersion-element rotation.

    摘要翻译： 在其优选实施例中，扫描单色仪使用脉冲驱动微步进电机经由减速齿轮谐波驱动来驱动频谱色散元件。 电机直接连接在减速齿轮传动装置的输入轮毂上，减速齿轮传动装置的输出轮毂直接支撑分光元件。 通过选择每转数很多的电机，以及减速比大的谐波驱动器，减速齿轮传动的输出轮毂每旋转一次就可以获得500万次脉冲步进的分辨率。 这在可用的45°范围的分散体旋转中转化为超过60万个增量角位移步长。

    Off axis rotation of diffraction grating
    8.
    发明授权
    Off axis rotation of diffraction grating 失效
    衍射光栅的离轴旋转

    公开(公告)号：US5015069A

    公开(公告)日：1991-05-14

    申请号：US312537

    申请日：1989-02-17

    申请人： Raymond G. Bryan ,  Louis Hlousek

    发明人： Raymond G. Bryan ,  Louis Hlousek

    IPC分类号： G01J3/06 ,  G01J3/18 ,  G02B26/08

    CPC分类号： G02B26/0808 ,  G01J3/06 ,  G01J2003/066 ,  G01J3/18

    摘要： In a spectrophotometer application where high speed positioning is critical, a galvanometer in conjunction with a microprocessor controlled hybrid digital/analog servo system is used to rotate a diffraction grating for wavelength selection. A table containing digital position information for all wavelengths is accessed by the microprocessor to perform wavelength changes. The use of the table permits the determination of grating position to yield a desired wavelength for a system where the axis of rotation does not intersect a point on the surface of the diffraction grating. That is, the diffraction grating can be rotated about an axis coinciding with its center of gravity.

    摘要翻译： 在高速定位至关重要的分光光度计应用中，使用与微处理器控制的混合数字/模拟伺服系统结合的电流计旋转用于波长选择的衍射光栅。 微处理器访问包含所有波长的数字位置信息的表以执行波长改变。 使用该表格允许确定光栅位置以产生用于旋转轴线不与衍射光栅表面上的点相交的系统的期望波长。 也就是说，衍射光栅可以围绕与其重心一致的轴线旋转。

    Remote sensing system
    9.
    发明授权
    Remote sensing system 失效
    遥感系统

    公开(公告)号：US4945249A

    公开(公告)日：1990-07-31

    申请号：US294087

    申请日：1989-01-05

    申请人： Andrew I. Grant ,  Martyn T. MacPherson ,  David G. Stevens

    发明人： Andrew I. Grant ,  Martyn T. MacPherson ,  David G. Stevens

    IPC分类号： G01V8/12 ,  G01J3/06 ,  G01J3/28 ,  G01J3/44 ,  G01N21/64 ,  G01V8/10

    CPC分类号： G01J3/44 ,  G01N21/64 ,  G01J2003/066 ,  G01J3/2803 ,  G01N2201/0214

    摘要： Apparatus for detecting an anomaly, (e.g. the presence of a hydrocarbon seep) at or near a water or land surface comprises means for generating a beam, preferably a pulsed beam, of primary light radiation, preferably ultra-violet light, and directing the beam towards the surface. The beam is sufficiently intense and of such a spectral composition that the beam causes the anomaly, if present, to emit secondary light radiation. The apparatus also comprises means for collecting the secondary light radiation, or means for collecting solar induced secondary light radiation, spectral analysis means for analysing the spectrum of the secondary radiation, and a high resolution, multi-element digitizing detector for recovering the analyzed secondary radiation. The detector has a plurality of detection channels positioned across the spectrum of the backscattered primary radiation and emitted secondary radiation, the channels being software configurable and under the control of a digitally addressable computer-operated controller. The concentration of used channels across the plurality of channels is adjustable and increasable in the regions of the spectrum of greatest interest and decreasable in the regions of least interest.

    Continuous monochrometer drift compensation of a spectral monochromator
    10.
    发明授权
    Continuous monochrometer drift compensation of a spectral monochromator 失效
    光谱单色仪的连续单色仪漂移补偿

    公开(公告)号：US4916645A

    公开(公告)日：1990-04-10

    申请号：US201250

    申请日：1988-06-02

    申请人： Charles E. Wuest ,  John B. Collins

    发明人： Charles E. Wuest ,  John B. Collins

    IPC分类号： G01J3/02 ,  G01J3/06 ,  G01J3/18 ,  G01J3/28 ,  G01J3/32 ,  G01J3/443 ,  G01N21/71 ,  G01N21/73 ,  G01N21/74

    CPC分类号： G01J3/28 ,  G01J3/32 ,  G01J2003/063 ,  G01J2003/066 ,  G01J3/18 ,  G01N21/73 ,  G01N21/74

    摘要： Iterative compensation of drift of peak positions of spectral lines is effected in a spectral monochromator including a grating, a detector of spectral fractions of a spectral band, a stepper motor for varying relative orientation of the grating and the detector, and a computer. Computer-defined spectral windows each encopasses a spectral band and has an initial spectral center. Each window is scanned to determine a peak spectral position. Calculation is made for determining a spectral position error of the peak position from the initial center for each corresponding window. A functional average of the offsets for the peaks is calculated as a linear function of window position, and a revised spectral center for each window is calculated as being equal to the initial center plus the functional average for the window position determined from the linear function. Each window is shifted correspondingly. The step of successively scanning through each window is repeated to determine a new peak position for each corresponding band, whereby each new peak position is maintained near the spectral center of each corresponding window.