Patent ID: 6567205
Filing Date: 2003-05-20
Classification: G02B,G03F

Abstract:
An exposure device with a lamp (1), a condenser arrangement (2), a light modulator (3), a field lens (4) and a projection objective (5), characterised in that the light modulator consists of a reflecting micro-mirror arrangement (3) in front of which the field lens (4) is arranged in a manner such that the beam path runs through the field lens (4) onto the micro-mirror arrangement (3) and after modulation and reflection at acute angles (16) once again runs through the field lens (4) and that the beam cross sections of the beam bundles incident (14) and reflected (15) on the micro-mirror arrangement (3) are formed oval and with their longer transverse extension arranged essentially perpendicular to the plane formed by the incident (21) and emergent (22) direction.