RPC Products Designed and fabricated to control the propagation and distribution of light. Home / RPC Products Diffractive Optics (1) Embossed Engineered Diffusers™ (4) Engineered Diffuser™ Films (1) HiLAM Diffusers (1) Microlens Arrays (19) Polymer-On-Glass (51) Vortex Phase Plates (11)