An electro-optical element such as a light deflection element which allows high speed random accessing and can provide a large deflection angle and wherein a plurality of of functions can be integrated stably with a high degree of accuracy in a single element. The electro-optical element includes a ferroelectric...http://www.google.se/patents/US5894363?utm_source=gb-gplus-sharePatent US5894363 - Electro-optical element
