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Title:
COMPUTER-ASSISTED FULL WAVE-BAND SPECTROMETER WAVELENGTH CALIBRATION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/076228
Kind Code:
A1
Abstract:
A computer-assisted full wave-band spectrometer wavelength calibration method relates to the technical field of computer-assisted spectrometer wavelength calibration, and to a spectrometer wavelength calibration method adopting an array detector spectrometer. The method is characterized by sequentially comprising the following steps: (1) constructing a wavelength calibration system, comprising a combined light source and computer programs, for a spectrometer; (2) inputting a spectral line wavelength of the combined light source, basic parameters of the spectrometer, and calibration conditions into a computer; (3) sequentially acquiring data of all calibration spectral lines; (4) carrying out spectral line profile reconstruction on the data of the spectral lines by using different methods, and determining a peak position; (5) fitting 'peak wavelength-pixel position' data by using a third-order polynomial to obtain a calibration result; (6) verifying the result; and (7) comparing error degrees of different peak searching methods, and selecting a result with the highest accuracy as a final result. The calibration process is automated, such that the problems of current spectrometer wavelength calibration are resolved, and the accuracy of a wavelength calibration result is improved.

Inventors:
YANG HUAIDONG (CN)
LI WUNAN (CN)
SUN LIQUN (CN)
JIN GUOFAN (CN)
Application Number:
PCT/CN2016/103753
Publication Date:
May 11, 2017
Filing Date:
October 28, 2016
Export Citation:
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Assignee:
UNIV TSINGHUA (CN)
International Classes:
G01J3/28; G01J3/10
Foreign References:
CN105424185A2016-03-23
CN101158599A2008-04-09
CN202494518U2012-10-17
US20110128542A12011-06-02
JP2013253820A2013-12-19
Other References:
SHI, KAI ET AL.: "Research on the Wavelength Calibration of Mini Fiber Spectrometer", OPTICAL TECHNIQUE, vol. 38, no. 4, 31 July 2012 (2012-07-31), pages 493 - 496, ISSN: 1002-1582
XU, ZHONGMIN ET AL.: "Wavelength Calibration for PC2000-PC/104 Spectrometer", OPTICS AND PRECISION ENGINEERING, vol. 12, no. 1, 28 February 2004 (2004-02-28), pages 11 - 14, ISSN: 1004-924X
WU, CHUANLONG ET AL.: "Wavelength Calibration for Miniature Fiber Optical Spectrometers", LASER TECHNOLOGY, vol. 26, no. 5, 30 September 2012 (2012-09-30), pages 682 - 685, ISSN: 1001-3806
Attorney, Agent or Firm:
BEIJING SIHAI TIANDA INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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