Patent ID: 6646279
Filing Date: 2003-11-11
Classification: G03F,H05K

Abstract:
Apparatus for exposing to light a substantially rectangular surface of at least one face of a panel through at least one artwork, said surface having a sensitivity, said apparatus comprising:a frame; means for holding said at least one artwork and said panel on said frame; an optical system comprising a light source emitting a light beam, processor means for processing said light beam to generate a uniform and collimated light beam having a mean angle of incidence relative to said surface to the exposed of less than or equal to 2Â° and having illumination uniformity that departs by less than Â±10% from a mean value, and shaper means to transform said uniform and collimated light beam into a uniform and collimated light strip having a length on said surface of said panel to be exposed and including said artwork, said length of said uniform and collimated light strip being not less than the length of one of the sides of said surface to be exposed, said means for processing said light beam comprising a reflector and an integrator-collimator assembly; displacement means for generating relative displacement between said light strip and said surface to be exposed in a direction substantially transverse to the length of said light strip; and matching means for matching the speed of said relative displacement between said light strip and said surface to be exposed to said illumination of said light strip and to said sensitivity of said surface to be exposed.