Computer Design of Diffractive Optics

4

Calculation of the DOE in the scalar approximation of the diffraction theory

4.1 Iterative methods of calculating the DOE

Iterative methods have been developed and are used widely in the problems of image processing and restoration. The majority of these methods have been reviewed in [1]. The application of iterative methods for the solution of the problem of calculating the DOE requires special investigations. This is associated with the fact that in most cases the problems of restoration of the distorted images are reduced to the solution of the linear integral equation of the convolution type with additive noise. The problems of synthesis of the DOE are reduced to solving the non-linear integral equation whose non-linear form is associated ...