CPC F21V 5/045 (2013.01) [F21V 5/08 (2013.01)] | 12 Claims |
1. An optical device comprising:
at least one light source intended to radiate a light beam in a first direction that forms an angle less than 90° with an essentially vertical downward direction;
a lens that in turn comprises:
a total internal reflection surface through which the light beam is reflected; and
a faceted surface comprising at least one first step defining at least:
a first section; and
a second section;
of said faceted surface,
wherein the faceted surface is configured to refract the light beam; and
wherein the faceted surface forms at least an angle greater than 90° or the conjugate thereof with the essentially vertical downward direction;
a shielding device defining therein an interior space wherein the lens is at least partially confined;
and wherein the shielding device has the shape of a truncated cylinder comprising a straight base and a surface of revolution, wherein the axis of the truncated cylinder is essentially parallel to the essentially vertical downward direction and wherein the straight base and the surface of revolution define the interior space defined by the shielding device.
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