| http://www.w3.org/ns/prov#value | - The method of claim 9 and wherein said surface is a reflective surface that shows axial asymmetry over its entire axial length such that there is no symmetry about any plane containing the axis, said surface having a methematically continuous shape such that a beam of light reflected by said reflective surface distributes the light of a light source according to the distribution of the light patte
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