The Study On Stare Hyperspectral Imaging System Using Longitudinal Chromatic Aberration Of Binary Optical Lens

Binary optical elements, also known as phase zone plate lenses , have been proposed for many applications. One of the principle limitations of these lenses is abundant chromatic aberration that prohibits broadband use without design compensation. Binary optic hyperspectral imaging technology exploits this typically unwanted effect, utilizing a phase lens to provide both imaging and dispersion to create an imaging spectrometer. The binary optic imaging spectrometer is a small, high resolution, compact, economical, rugged, programmable spectral imaging sensor. This dissertation presents theoretical and experimental studies of stare hyperspectral imaging system using longitudinal chromatic aberration of binary optical lens.In chapter one of this dissertation the development history N characters and application of binary optics are reviewed. And the development, principles, classification and application of hyperspectral imaging technology are introduced. The binary optic hyperspectral imaging technology is a spectro-tomographic technique which integrates over a narrowband of the image cube which is a new concept of imaging spectrometer. So the general research direction and the basic research scheme are determined. Chapter two presents optical imaging characters of binary optical elements. In Chapter three the principles of binary optic hyperspectral imaging technology are firstly introduced. Then design and characteristic equations, incoherent point spread function psf and computer simulations of binary optic imaging spectrometer's imaging performance are provided. The theory of image formation with binary optical element is developed in Chapter four to describe and predict the system's performance. In chapter five to reconstruct the three-dimensional object cubes, various deconvolution algorithms: nearest neighbor, inverse filtering and constrained iterative deconvolution are developed and applied to both computer generated and experimentally measured image cubes. The best results are obtained using an SVD inverse fourier deconvolution algorithm with regularization for noise suppression. In chapter six simple experimental prototype is designed and fabricatedand experiments concerned are performed with it which demonstrate the basic theory and algorithms of binary optic hyperspectral imaging technology. Finally , suggestions for future work are presented.Binary optic imaging spectrometer is a practical image spectrometer that can be built to operate at ultraviolet, visible or infrared wavelengths for applications in surveillance, remote sensing, medical imaging, law enforcement, environmental monitoring, and laser counter intelligence.