Electroluminescent Illumination SystemUnited States Patent Number: 5,928,801
AbstractAn illumination system has an active layer which includes an electroluminescent material, the active layer being located between an optically transparent electrode layer and a reflective electrode layer. A reflective polarizer is present at a side of the transparent electrode layer facing away from the active layer. A sub-beam incident on the polarizer and having an unwanted polarization is reflected back to the active layer, where it is again partially depolarized to recover a component having the desired state of polarization. The invention also relates to a flat-panel picture display device which includes such an illumination system.
Citation InformationDirk J. Broer, David Braun, Antonius H.J. Venhuizen and Christianne R.M. De Witz. "Electroluminescent Illumination System" United States Patent Number: 5,928,801 (1999) p. 1 - 7
Available at: http://works.bepress.com/dbraun/29/