FIELD: golography. SUBSTANCE: lens raster is used as diffuser mounted ahead the surface being under control Wide divergence of the light passed light diffuser which is required for achieving wide field of view and contrast interference bands, the coarse-grained structure of the diffuser in case in lens raster is used is provided due to independent selection of focal power and dimensions of the lenses which form the raster. EFFECT: widened range of diameters of measured mirrors when measuring radiuses of curvatures of these mirrors. 1 dwg
