Optical encryption of multiple three-dimensional objects based on multiple interferences and single-pixel digital holography

Wang Ying, Liu Qi, Wang Jun^†, Wang Qiong-Hua

(color online) Schematic diagram of the optical setup: L, lens; M, mirror; SF, spatial filter; BS, beam splitter; RPM, random phase mask; SLM, spatial light modulator; PZT, piezoelectric.