HOMOGENIZER WITH REDUCED INTERFERENCE

摘要

The invention relates to a method for creating a target intensity distribution (20) in a target field (3) from a first input light beam (4) propagating in a first propagation direction and a second input light beam (5), whereby said first input light beam (4) and said second input light beam (5) entering a light entrance surface (6a, 6b) of a cylindrical lens array (1a) of a homogenizer. According to the invention said second input light beam (5) propagates in a second propagation direction differing from said first propagation direction. The invention further relates to an optical system for creating a target intensity distribution (20) in a target field (3) comprising: a first light source for generating a first input light beam (4) and a second light source for generating a second input light beam (5), or a single light source for generating a light beam and a beam splitter for splitting said light beam into said first input light beam and said second input light beam, a first directing device for directing said first input light beam (4) to propagate in a first propagation direction and a ho mogenizer having a cylindrical lens array (1a) with a light entrance surface (6a, 6b) for being entered by said first input light beam (4) and said second input light beam (5). According to the invention there exists a second directing device for directing said second input light beam (5) propagating in a second propagation direction differing from said first propagation direction when entering said light entrance surface (6a, 6b).