Research On Diffractive Spectral Imaging

Diffractive spectral imaging technology is the use of diffractive optical elements with dispersion and imaging characteristics, and the diffraction imaging spectrometer with high flux, high signal to noise ratio, small size, light weight, rugged, inexpensive, and that is easy to implement small and light quantify the advantages. Diffractive spectral imaging is the most of the development prospect of spectral imaging technology.This dissertation introduces diffractive spectral imaging technology theory and its development detailedly, presents a unified formula that representation of lateral magnification in the diffraction spectral imaging, through analysis the spectral imaging characteristics of the lens of the diffractive optical. Based on the analysis of the formula in the comprehensive investigation of several diffraction spectrum light path structure and analyze the advantages and disadvantages of the light path. Through the diffraction efficiency of surface microstructure of research and analysis, this paper proposed a program, making use of the surface structure of the optical micro-diff ractive lens, and on this basis to study the diffractive lens design and parameters of the impact of spectral imaging and detailed analysis of the Linearization of image space.In this paper, a systematic theory of spectral imaging diffractive lenses is established, and theoretical model of the point spread function and the three-dimensional imaging of diffractive optical elements is analyzed, as we study the spectrum of the reconstruction algorithm for fuzzy solution and reconstruct the target of one-dimensional two-dimensional spatial information and spectral information.The last, we design and build a compact, simple and practical optical experimental setup, processed the diffraction lens which the experiment needs and tested the Modulation Transfer Function of the lens, and we make further development of the prospects of the diffraction spectral imaging technology.