  Complex vector light modes, characterized by a non-uniform transverse
polarization distribution, have pervaded a wide range of research fields. In
this study, we propose a novel approach that enables the simultaneous
generation of multiple vector beams based on a spatially-segmented digital
hologram and two or more cascaded beam displacers. More precisely, an input
beam is separated into multiple parallel copies spatially separated, which are
then sent to the center of each segmented hologram, enabling independent
modulation of each beam. The modulated beams are then judiciously recombined
with a beam displacer to generate multiple vector modes in a simultaneous way.
We demonstrated our technique with two arbitrary vector modes but the technique
can be easily extended to more by inserting additional beam dispalcers. To
assess the quality of the generated vector modes, we employed Stokes
polarimetry to reconstruct their transverse polarisation distribution and to
measure their degree of non-separability. We envision that this technique will
find significant applications in various fields, including optical
communications, optical sensing, optical tweezers to mention a few.
