The invention relates to an apparatus for recording holograms on an optical medium, in particular on an optically addressable spatial light modulation device. For this purpose, the apparatus comprises an illumination device for emitting light, an optical medium, an image source having at least one modulation...http://www.google.com.au/patents/US20090225381?utm_source=gb-gplus-sharePatent US20090225381 - Device for Recording Holograms