The present invention relates to an improvement of a total internal reflection lens whereby a tilted symmetry axis leads to a net deflection of the output beam away from the surface normal of the exit surface. Linear TIR lenses have a net deflection transverse to their focal strip. Circular TIR lens...http://www.google.de/patents/US6924943?utm_source=gb-gplus-sharePatent US6924943 - Asymmetric TIR lenses producing off-axis beams
