Patent ID: 7268951

Claim:
Optical beam splitter for a light beam ( 2 ) that is parallel to a beam axis (A), comprising a transparent central area ( 3 ); and a plurality of reflecting reflector surfaces ( 4 a , 4 b ) that are respectively inclined by a constant reflector angle (α) relative to the beam axis (A) for generating each a discrete spot beam ( 5 a , 5 b ), wherein the central area ( 3 ) is convexly shaped in the form of at least a portion of a cylinder, wherein the central area ( 3 ) has a cylindrical segment shape with a cross-section forming a portion of a circle, and with a cylinder axis (Z) through the circle that is oriented perpendicular to the beam axis (A) and to the two spot beams ( 5 a , 5 b ), and wherein the cylindrical segment-shaped central area ( 3 ) forms cylindrical surfaces ( 7 a , 7 b ) of substantially identical curvatures associated with the circle on beam input side and on beam output side.