An electro-optical display device having an assembly of individual, electrically addressable display elements arrayed in a plurality of rows and columns, and a corresponding array of lenses, each of these display elements aligned with and on the optical axis of a respective one of the lenses with its...http://www.google.de/patents/US4263594?utm_source=gb-gplus-sharePatent US4263594 - Electro-optical display design
