Using inhomogeneous sized liquid crystal (LC) droplets for lens and prisms. For forming a positive lens, the LC droplet size can gradually increase from the center to the side edges. For forming a negative lens, the LC droplet size can gradually decrease from the center to the side edges. The lens can...http://www.google.de/patents/US6864951?utm_source=gb-gplus-sharePatent US6864951 - Tunable electronic lens and prisms using inhomogeneous nano scale liquid crystal droplets
