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    DATA KNITTING TANDEM DISPERSIVE RANGE MONOCHROMATOR
    1.
    发明申请
    DATA KNITTING TANDEM DISPERSIVE RANGE MONOCHROMATOR 有权

    公开(公告)号：US20160299005A1

    公开(公告)日：2016-10-13

    申请号：US15185818

    申请日：2016-06-17

    Applicant: WESTCO SCIENTIFIC INSTRUMENTS, INC

    Inventor： Jerome J. Workman, JR. ,  Tushar Saraf ,  Thomas Andrew Bennett

    IPC: G01J3/18 ,  G01J3/02

    CPC classification number: G01J3/18 ,  G01J3/0202 ,  G01J3/027 ,  G01J3/06 ,  G01J3/10 ,  G01J2003/1866

    Abstract: Aspects of a tandem dispersive range monochromator and data knitting for the monochromator are described herein. In one embodiment, the monochromator includes a tandem diffraction grating, a grating drive motor that rotates the tandem diffraction grating to provide, by diffraction of broadband light, first dispersed wavelengths of light and second dispersed wavelengths of light, a detector that detects a first reflection from the first dispersed wavelengths of light and a second reflection from the second dispersed wavelengths of light, and processing circuitry that knits together data values from the first reflection and data values from the second reflection to provide a spectrum of combined data values. By using a tandem diffraction grating having different dispersive surfaces, measurements of relatively high precision and quality may be taken throughout a wider spectral range, and the measurements may be knitted together to provide a spectrum of combined data values.

    CALIBRATION FOR BAKING CONTRAST UNITS
    2.
    发明申请
    CALIBRATION FOR BAKING CONTRAST UNITS 审中-公开

    公开(公告)号：US20190049306A1

    公开(公告)日：2019-02-14

    申请号：US15673958

    申请日：2017-08-10

    Applicant: WESTCO SCIENTIFIC INSTRUMENTS, INC

    Inventor： Jerome J. Workman, JR. ,  Mikhael G. Jobran ,  Robert John Winson

    IPC: G01J3/52 ,  G01J3/46

    Abstract: The calibration of an instrument, such as a spectrophotometer, for measuring baking contrast units (BCUs) is described. In one example, a spectrophotometer includes a filter wheel including, among other filters, a bandpass filter to transmit a range of broadband light through the spectrophotometer. The spectrophotometer also includes a detector to detect a reference sample value based on a reflection of the range of light off a BCU reference standard. Processing circuitry in the spectrophotometer is configured to calculate a reflectance ratio value based on a ratio of the reference sample value and a reference reflectance value, and calibrate the spectrophotometer for measuring BCUs based on the reflectance ratio value and a known BCU value for the BCU reference standard. The reference sample value and the reference reflectance value can also be corrected for measurement drift attributed to a source of the broadband light and/or the detector over time.

    TANDEM DISPERSIVE RANGE MONOCHROMATOR
    3.
    发明申请
    TANDEM DISPERSIVE RANGE MONOCHROMATOR 有权
    标准色差范围单色显示

    公开(公告)号：US20140268106A1

    公开(公告)日：2014-09-18

    申请号：US14213214

    申请日：2014-03-14

    Applicant: WESTCO SCIENTIFIC INSTRUMENTS, INC.

    Inventor： Jerome J. Workman, JR. ,  Tushar Saraf ,  Thomas Andrew Bennett

    IPC: G01J3/18

    CPC classification number: G01J3/027 ,  G01J3/0202 ,  G01J3/06 ,  G01J3/10 ,  G01J3/18 ,  G01J2003/1866

    Abstract: Aspects of a tandem dispersive range monochromator are described herein. In one embodiment, the monochromator includes a light source that provides broadband light, a tandem diffraction grating including a first diffraction grating and a second diffraction grating, a grating drive motor that rotates the tandem diffraction grating to provide dispersed wavelengths of light, a detector that detects a portion of the dispersed wavelengths of light, and processing circuitry that controls a grating drive motor to regulate an angular velocity of the tandem grating based on an angular orientation of the tandem diffraction grating. By using a tandem diffraction grating having different dispersive surfaces, measurements of relatively high precision and quality may be taken throughout a wider spectral range. In another aspect, the processing circuitry controls a sample drive motor to vary an angle of incidence of the dispersed wavelengths of light onto a sample for evaluation.

    Abstract translation: 这里描述了串联色散范围单色仪的方面。 在一个实施例中，单色器包括提供宽带光的光源，包括第一衍射光栅和第二衍射光栅的串联衍射光栅，旋转串联衍射光栅以提供分散的波长的光栅的光栅驱动马达，检测器 检测部分分散的光的波长，以及处理电路，其控制光栅驱动电机，以基于串联衍射光栅的角取向来调节串联光栅的角速度。 通过使用具有不同色散表面的串联衍射光栅，可以在更宽的光谱范围内进行相对高精度和质量的测量。 在另一方面，处理电路控制样品驱动电机以将分散的波长波长的入射角度改变到样品上用于评估。

    SPECTROMETER SECONDARY REFERENCE CALIBRATION
    4.
    发明申请
    SPECTROMETER SECONDARY REFERENCE CALIBRATION 审中-公开

    公开(公告)号：US20180340805A1

    公开(公告)日：2018-11-29

    申请号：US16035105

    申请日：2018-07-13

    Applicant: WESTCO SCIENTIFIC INSTRUMENTS, INC

    Inventor： Jerome J. Workman, JR.

    IPC: G01D18/00 ,  G01J3/28

    Abstract: Aspects of spectrometer secondary reference calibration are described. In one embodiment, a diagnostic measurement for evaluation of an aspect of calibration in spectroscopy is performed. A result of the diagnostic measurement is analyzed to determine a deviation from an expected result. Based on the analysis, a correction algorithm may be applied to the aspect of calibration, in view of the deviation. In some embodiments, a product model diagnostic measurement is also performed for further evaluation of the aspect of calibration. A result of the product model diagnostic measurement is analyzed to determine a product model deviation from an expected result of the product model diagnostic measurement, and a product model correction algorithm is applied, if necessary. According to aspects of the embodiments described herein, using secondary reference standards permits reconstruction of calibration parameters without any need for a master instrument or other forms of calibrated reference instrumentation.

    TANDEM DISPERSIVE RANGE MONOCHROMATOR
    7.
    发明申请
    TANDEM DISPERSIVE RANGE MONOCHROMATOR 有权
    标准色差范围单色显示

    公开(公告)号：US20160299003A1

    公开(公告)日：2016-10-13

    申请号：US15185291

    申请日：2016-06-17

    Applicant: WESTCO SCIENTIFIC INSTRUMENTS, INC

    Inventor： Jerome J. Workman, JR. ,  Tushar Saraf ,  Thomas Andrew Bennett

    IPC: G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/18

    CPC classification number: G01J3/027 ,  G01J3/0202 ,  G01J3/06 ,  G01J3/10 ,  G01J3/18 ,  G01J2003/1866

    Abstract: Aspects of a monochromator are described herein. In one embodiment, the monochromator includes a light source that provides light, a diffraction grating including a first diffraction grating and a second diffraction grating, a grating drive motor that rotates the diffraction grating to provide dispersed wavelengths of light, a detector that detects a portion of the dispersed wavelengths of light, and processing circuitry that controls a grating drive motor to regulate an angular velocity of the grating based on an angular orientation of the diffraction grating. By using a diffraction grating having multiple, different dispersive surfaces, measurements of relatively high precision and quality may be taken throughout a wider spectral range. In another aspect, the processing circuitry controls a sample drive motor to vary an angle of incidence of the dispersed wavelengths of light onto a sample for evaluation.

    Abstract translation: 本文描述了单色仪的方面。 在一个实施例中，单色器包括提供光的光源，包括第一衍射光栅和第二衍射光栅的衍射光栅，旋转衍射光栅以提供分散波长的光的光栅驱动马达，检测部分的检测器 以及处理电路，其控制光栅驱动电机以基于衍射光栅的角度取向来调节光栅的角速度。 通过使用具有多个不同色散表面的衍射光栅，可以在较宽的光谱范围内进行相对较高精度和质量的测量。 在另一方面，处理电路控制样品驱动电机以将分散的波长波长的入射角度改变到样品上用于评估。

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