Patent ID: 7682040
Filing Date: 2010-03-23
Classification: G07D,H04N

Abstract:
1. An optical system usable to produce an illuminated strip on a surface of a material comprising: an illumination device including a plurality of light sources spaced at a distance from the surface and usable to emit light to produce said illuminated strip on the surface of the material; means supporting the material for selective movement with respect to said illumination device in a movement direction; at least one reflector module in said illumination device and located between, in a path of light from said plurality of light sources, said light sources and the surface; at least one mirror and a diffuser in said at least one reflector module, said at least one mirror concentrating said light emitted by said light sources onto the surface to produce said illuminated strip, said diffuser being located on a light exit side of said illumination device in said at least one reflector module; and an illuminated strip length and an illuminated strip width, said illuminated strip width extending in said movement direction of the material, said light emitted from said light sources having a first concentration in said illuminated strip length and a second concentration in said illuminated strip width, said first concentration being greater than said second concentration.