Abstract: Multilayer Optical Disc and Method and Apparatus for making same are proposed The technology provides increasing the number of layers in reflective optical disks of any format. The technology allows producing of multilayer optical reflective discs of any format (CD, ROM, DVD ROM, Blue Ray, HD-DVD, DVD-R, DVD-RW, etc.) using existing CD/DVD production lines with reasonable upgrading.

Abstract: The present invention provides an integrated sign illumination system for the illumination of a sign face. The system comprises a contoured mounting device configured for directing a selected colour of light to a selected portion of the sign face. A plurality of light-emitting elements for the generation of light of one or more colours are optically coupled to the contoured mounting system at selected mounting sites. The colour of the light produced by the light emitting elements can be configured to be compatible with the selected illumination colour of the sign face thereby providing a means for the reduction of light loss due to absorption by the sign face.