Patent ID: 6680800
Filing Date: 2004-01-20
Classification: G02B,H01S

Abstract:
A device for symmetrizing the radiation from at least one linear optical emitter defined by an arrangement of light beams with telecentric chief rays lying infinitesimally close together in at least one light beam group in an x-direction perpendicular to a main optical axis z, and whose radiation in reference to the x-direction and a y-direction perpendicular to the x-direction and to the z-direction is asymmetrical, comprising:a cylindrical lens optical unit positioned after the at least one emitter having at least one cylindrical lens, said cylindrical lens optical unit collimating each light beam in the y-direction, wherein by one of rotating at least one of the cylindrical lenses about a direction of emission of the emitter and providing a diffracting element, one of each light beam and each light beam group is diffracted at different angles in the y-direction, a director-collimator optical unit positioned ahead of the at least one emitter and along the main optical axis z, said director-collimator optical unit collimating each of the at least one light beam in the x-direction and diffracts said at least one light beam at different angles in the x-direction and the y-direction, so that principal rays of the individual light beams from each light beam group in the x-direction converge at a specified distance from the at least one emitter and run parallel to each other in the y-direction, and a redirecting optical unit located after the director-collimator optical unit, which diffracts the light beams in the x-direction.