In a planar light illumination and imaging (PLIIM) system, a planar light illumination module (PLIM) of compact construction produces a planar laser illumination beam (PLIB) which emanates substantially within a single plane along the direction of beam propagation towards an object to be optically illuminated...http://www.google.de/patents/US6837437?utm_source=gb-gplus-sharePatent US6837437 - Planar laser illumination modules (PLIMS) employed in a planar laser illumination and imaging (PLIIM) system
