A light assembly disperses light emitted by a light source. The lighting
assembly includes a light entry surface for receiving the light emitted
by the light source. A direction surface directs the light in a
predetermined direction. A stepped region, disposed adjacent the light
entry surface receives the light directed by the direction surface and
reflects the light. The stepped region includes a plurality of step
parts, each defining a light deflection surface, wherein each of the
light deflection surfaces is greater in area s step distance between the
light deflection surface and the direction surface increases.