DESIGN OF ONE-DIMENSIONAL BAND-LIMITED UNIFORM DIFFUSERS OF LIGHT

We present two methods for generating numerically a one-dimensional ra ndom surface, defined by the equation x(3) = zeta (x(1)), that has a p rescribed probability density function of slopes. This problem arises in the design of a diffuser that scatters light uniformly within a ran ge of scattering angles and produces no scattering outside this range. Numerical calculations of the scattering of light from random surface s generated by these approaches show that the scattered intensity, ind eed, has a rectangular distribution as a function of the scattering an gle. (C) 1998 American Institute of Physics. [S0003-6951(98)03340-3].