Several options for beam-shaping optics are presented, among them a novel single-element solution with toroidal surfaces in which the far-field angular spread of the outgoing beam is the average of the incoming divergences. The beam-shaping elements are judged with respect to their positioning and fabrication tolerances.
© 1995 Optical Society of America
Joseph Braat, "Design of beam-shaping optics," Appl. Opt. 34, 2665-2670 (1995)