{HEAD ~ Non parallel sides} extending between the reflective surfaces are used to provide total internal reflection and concentrate {TAIL ~ all} of the incoherent light beams into a smaller area, Alignment of the incoherent light beam according to a predetermined angle causes the escaping light beams to be adjacent to each other and produce a uniform and continuous line of light free from destructive interference areas 
{ HEAD ~ Non parallel sides } extending between the reflective surfaces are used to provide total internal reflection and concentrate { TAIL ~ all } of the incoherent light beams into a smaller area , Alignment of the incoherent light beam according to a predetermined angle causes the escaping light beams to be adjacent to each other and produce a uniform and continuous line of light free from destructive interference areas
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