Random phase encoding achievement of color images under spotlight illumination

In order to achieve single random phase encoding of color images,based on the principle of random phase encoding and multi-wavelength technology,the random phase encoding of trichromatic images was realized.Theoretical analysis and digital simulation results show that using spotlight illumination systems to realize random phase encoding of color images is feasible.As the installations are reduced,the light energy losses and the corresponding image noise from random phase mask is effectively reduced.