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With help of liquid crystal polymers (LCP) a polarization sensitive diffuser has been realized. By using convex
microstructures made of LCP and an index matching layer, two distinct functions depending on the orientation of the
device and the polarization state of the input light are realized. For one polarization the light pass through the device
with no changes and for the perpendicular polarization, the light is diffused by the microstructures.
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Patrick Ruffieux, Toralf Scharf, Hans Peter Herzig, "Polarization sensitive diffuser," Proc. SPIE 6992, Micro-Optics 2008, 69920N (14 May 2008); https://doi.org/10.1117/12.781026