Patent ID: 6914708
Filing Date: 2005-07-05
Classification: G02F,G03F

Abstract:
1. An apparatus for exposing a pattern onto a photosensitive medium, the apparatus comprising: (a) a source of exposure radiation for providing an incident light beam to a polarization light modulator; and (b) said polarization light modulator comprising an array of pixels for modulating, at each pixel said incident light beam in order to transmit an exposure beam to the photosensitive medium; and, (c) a reflective surface disposed to reflect, back through the photosensitive medium, a portion of said exposure beam transmitted through the photosensitive medium, in order to obtain a photoreactive response thereby; and wherein said source of exposure radiation and said reflective surface are on opposite sides of the photosensitive medium, and wherein said polarization light modulator is a transmissive LCD spatial light modulator.