Super-resolution spectrograph based on multiple slit arrays

Abstract

The invention provides a super-resolution spectrograph based on multiple slit arrays, and belongs to the field of spectral analysis instruments. The super-resolution spectrograph solves the problems that a super-resolution spectrograph is high in adjustment process requirement and high in difficulty through the adoption of the sub-pixel technology, an entrance slit in the super-resolution spectrograph is N-order slit arrays, spatial filtering is carried out on incident rays through the entrance slit to enable the incident rays to be incident to a collimating mirror according to the required width of an optical system, the rays are collimated through the collimating mirror, split through optical gratings, focused through a focusing mirror sequentially and then imaged to a photoelectric detector, N frames of low-resolution spectrum charts with sub-pixel displacement are obtained in the direction vertical to the spectrum dimension, information of the spectrum charts is collected by a computer, a recursive algorithm is utilized to solve sub-pixel values to structure a frame of a high-resolution spectrum chart, and the N is a positive integer and larger than or equal to 2. According to the super-resolution spectrograph, on the premise that incident luminous flux is not reduced, spectral resolution is improved, spectral super-resolution is achieved, and the spectral measurement range comprises ultraviolet-visible-near infrared bands.

Description

technical field [0001] The invention relates to the technical field of spectral analysis instruments, in particular to a super-resolution spectrometer based on a multi-slit array. Background technique [0002] The spectrometer is an important instrument for optical detection. It is a general-purpose device for measuring the composition and structure of substances through the measurement and analysis of spectra. It has the advantages of fast measurement speed, high precision, and non-destructive measurement. In recent years, along with the development of materials science, computer science, optoelectronics, and semiconductor processing technology, especially the combination of spectroscopy and analytical chemistry, spectroscopic instruments have begun to be widely used. At present, the fields that have been widely used include material chemistry, petrochemical , optical detection, astronomical research, environmental protection, resource detection and aerospace and other fiel...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that existing spectrometers that use sub-pixel technology to achieve super-resolution have high requirements and difficulties in the assembly process, the present invention provides a super-resolution spectrometer based on a multi-slit array

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