Solar grating spectrometer optical system optimization method, device, equipment and storage medium

Abstract

The invention discloses a solar grating spectrometer optical system optimization method, device and equipment, and a storage medium. The method comprises steps that a solar physics science goal selected by a user is obtained; according to the solar physics science goal, a corresponding grating type and multiple characteristic spectral lines are selected; grating type parameters include a grating constant and a grating blazing angle; when a grating incident angle is equal to a grating diffraction angle, according to the grating constant and the wavelength of the characteristic spectral lines, adiffraction level corresponding to the characteristic spectral lines is calculated; according to the diffraction level, the grating blazing angle and a grating equation, a variation range of the grating incident angle is calculated; according to the variation range of the grating incident angle, grating diffraction efficiencies corresponding to different characteristic spectral lines are calculated under different grating incident angles; according to the principle that higher grating diffraction efficiency can be obtained through the multiple characteristic spectral lines, the grating incident angle is obtained. The method is advantaged in that the energy utilization rate of the spectral imaging system is significantly improved, and thereby the time resolution and the spectral data signal-to-noise ratio of the spectral imaging system are improved.

Description

technical field [0001] The invention relates to the application field of a solar grating spectrometer, in particular to an optical system optimization method, device, equipment and storage medium of a solar grating spectrometer. Background technique [0002] In order to obtain high-performance solar spectral imaging performance, the grating spectrometer needs to be designed and optimized to meet the design index requirements. The traditional grating spectrometer design method generally adopts the aberration optimization design method to obtain good optical imaging performance. For example: Lites et al. designed a solar polarization imaging instrument based on the Littrow imaging structure, using an off-axis parabolic mirror as the collimation of the spectral system The experimental results show that the optical system can achieve diffraction-limited imaging capability, although its field of view is very small. Chen Tingai et al. proposed an imaging spectrometer based on a c...

AI Technical Summary

Problems solved by technology

One of the problems facing the current optical system design is that the initial structure of the optical system is not easy to obtain, and there is a lack of effective optimization schemes, so it is impossible to make a comprehensive evaluation of the performance of the optical system. In the actual design process, it is more dependent on the designer experience of

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