DISPOSITIF OPTIQUE POUR HOMOGENEISER UN FAISCEAU LASER

摘要

An optical device for homogenising a laser beam includes a plurality of abutting front lenses (LFnm) for dividing the laser beam to be homogenised into m x n laser beams, each having a substantially uniform cross-section, and a substantially homogeneous energy distribution; a first intermediate plane (PI1) located in the focal plane of the front lenses (LFmn) and having a plurality of entrance pupils (PEij) each of which is arranged at the focus of a front lens (LFmn) selected among said plurality of front lenses (LFmn); a second intermediate plane (PI2) having a plurality of exit pupils (PSij), a collecting lens (LC) capable of collecting the beams from the plurality of exit pupils (PSij); and optical transmission means for individually transmitting the light beams from the plurality of entrance pupils (PSij) to the plurality of exit pupils (PSkl).