3D SELF-IMAGING CONDITION FOR FINITE APERTURE OBJECTS

The effect of object spatial truncation on self-imaging formation is i nvestigated in the general case, resulting in the definition of a 3D s elf-imaging condition. Particular attention is paid to periodic object s for which a link between the self-imaging distance and the optimal 2 D tiling is demonstrated. We deduce the resulting minimum number of pe riods required to observe self-imaging. An experimental illustration i s presented in a simple case and the theoretical values compared to ex perimental results.