Method for carrying out preset calibration on spectral analysis module based on optical filter array

Abstract

The invention provides a method for carrying out preset calibration and spectrum reconstruction on a spectrum analysis module based on an optical filter array. According to the preset calibration method provided by the invention, the preset calibration information is obtained; the preset calibration information comprises optical response and photoelectric conversion factors of each part or elementpart in the corresponding spectral analysis module, structural part deviation and alignment deviation among all parts in the manufacturing process, and comprehensive influence of other uncontrollableand undefined factors on spectral testing. The preset calibration method and the spectrum reconstruction method provided by the invention are beneficial to enabling the spectrum analysis module to obtain more accurate spectrum information in detection.

Description

technical field [0001] The present invention relates to a spectrum analysis module based on an optical filter array, in particular to a method for performing preset calibration and spectrum reconstruction on the spectrum analysis module. Background technique [0002] A spectrometer is a very important optical instrument. There are generally two types of spectrometers currently in use: one is the dispersion spectrometer represented by the grating spectrometer; the other is the modulation type represented by the Fourier transform spectrometer based on the interferometer. Laboratory-level professional spectrometers are generally large in size and expensive, and their overall performance is often weakened with the reduction in size of the instrument. [0003] In recent years, with the development of information technology, intelligent production and life, and the growth of people's needs for food safety, environmental pollution, and medical health, micro-integrated spectral ana...

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Problems solved by technology

In general, the size (or area) of these array elements is small and the number is large, which makes the preset calibration test complex, inefficient, and may introduce large errors

Furthermore, when the filter array, detector array, and other optical components are assembled into a module, the transfer function of other optical components, the shape of the beam, the alignment error between different components, and the transfer during the photoelectric signal conversion process function and other uncontrollable factors will make the preset calibration information based on the filter array and detector array insufficient, thus introducing large errors in spectral reconstruction and may seriously affect the accuracy of spectral testing sex

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