Systems and methods for providing an LCD backlight are described. An LCD backlight system includes: a beam bending and viewing film including a first side including a surface diffuser and a second side including a plurality of substantially parallel optical elements, each of the plurality of substantially...http://www.google.de/patents/US6072551?utm_source=gb-gplus-sharePatent US6072551 - Backlight apparatus for illuminating a display with controlled light output characteristics
