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A grating rotation method and device for improving the wavelength accuracy of a spectrograph

A technology of a rotating device and a spectrograph, applied in the optical field, can solve the problems of inaccurate wavelength accuracy spectral information results, etc., and achieve the effect of improving the wavelength accuracy

Active Publication Date: 2022-02-11
ZOLIX INSTR
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  • Claims
  • Application Information

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Problems solved by technology

[0003] This application provides a grating rotation method and device for improving the wavelength accuracy of the spectrograph, at least to solve the existing grating rotation scheme in the prior art due to the problem of the wavelength accuracy of the grating scanning spectrograph. The problem of inaccurate spectral information results

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  • A grating rotation method and device for improving the wavelength accuracy of a spectrograph
  • A grating rotation method and device for improving the wavelength accuracy of a spectrograph
  • A grating rotation method and device for improving the wavelength accuracy of a spectrograph

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Embodiment Construction

[0044] Next, the technical solutions in the embodiments of the present invention will be described in connection with the drawings of the embodiments of the present invention, and it is understood that the described embodiments are merely the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are in the range of the present invention without making creative labor premise.

[0045] At present, there are several spectrosters (spectrometers):

[0046] 1, the spectrometer, is the spectrometer disperse the composite light into a spectral belt by the grating, projected onto the array detector, the array detector can detect the spectral information of a certain wavelength width at one time, and the wavelength range is fixed.

[0047] 2, the raster scanning slit spectrometer, is a spectrometer dispersed into a spectral belt via the grating, and then the sp...

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Abstract

The invention provides a grating rotation method and device for improving the wavelength accuracy of a spectrograph, including: obtaining the start wavelength and stop wavelength of the scanning range; The start angle and end angle of grating rotation; the wavelength corresponding to the start angle is smaller than the start wavelength, and the wavelength corresponding to the end angle is greater than the end wavelength; rotate the grating according to the start angle and end angle to obtain the required spectral information. According to the grating rotation scheme provided in the present application, the problem of inconsistency in the obtained spectrum accuracy may not be caused by different grating rotation angles.

Description

Technical field [0001] The present application belongs to the field of optics, and in particular, to a grating rotation method and apparatus and apparatus for improving the wavelength accuracy of the spectrometer. Background technique [0002] The raster scanning spectrometer is dispersed by the grating into a band, projected onto the array detector, the array detector can detect the spectral information of a certain wavelength width in one time, and then rotate the grating, and then give a certain wavelength width The spectral information, finally splicing these spectral information to the spectral information of the ultra-long wavelength width, but the current grating scanning spectroscope has a problem, so that it is limited in some high-precision tests. In the prior art, the array detector of the raster scanning spectrometer is only acquired a spectrum each time. Spectral information splicing, the rotation of the raster in the existing spectrometer is to divide and calculate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/40G01J3/06
CPCG01J3/40G01J3/06G01J2003/064G01J2003/068G01J3/0235G01J3/18G01J3/027G01J3/28G01J3/0278G01J2003/069
Inventor 蔡宏太陈海霞
Owner ZOLIX INSTR