R2R-UV-nanoimprinting as a powerful mean for large-area fabrication of freeform micro-optical elements

R2R-UV-nanoimprinting sets new benchmarks for the fabrication of miniaturized, low-cost and low-weight freeform micro-optical elements applicable in lighting, display, medical diagnostics, etc. We demonstrate the related process chain, combining optical design, direct laser lithography, step&repeat imprinting and R2R reproduction.