Patent ID: 6844920

Claim:
An exposure device for exposing a projection of an electronically stored artwork pattern onto a substrate, in particular a printing plate ( 1 ), with image processing electronics ( 2 ) that can store the image data, with a light modulator ( 7 ) that can be electronically controlled by the image processing electronics ( 2 ), in particular an LCD display ( 7 ) or a micro-mirror device, with an illuminating device ( 8 , 9 ) for illuminating the light modulator ( 7 ) and with a projection lens for projecting the light modulator ( 7 ) onto the substrate ( 1 ), characterized in that the image processing electronics ( 2 ) include a compensation device ( 4 , 5 ) to compensate for optical defects and/or tolerances in the beam path of the exposure device, and the compensation device ( 4 , 5 ) can modulate the total quantity of incident light striking any point of the substrate ( 1 ) to be exposed during the exposure process.