CPC F21V 5/045 (2013.01) [F21V 5/007 (2013.01); F21V 5/04 (2013.01); F21V 7/05 (2013.01); F21Y 2115/10 (2016.08)] | 19 Claims |
1. A lens for dispersing light emitted from a light emitting device, comprising:
a lower surface;
a light incident portion having a concave shape from the lower surface, the light incident portion having a light incident surface;
a light exit portion through which light having entered the lens through the light incident portion exits the lens to an outside of the lens; and
a plurality of legs formed on a lower surface of the lens,
wherein the legs has a first thickness and includes a leg protrusion protruding downwards from a lower surface thereof, the leg protrusion has a second thickness greater than the first thickness,
wherein the light incident portion includes an oblique light incident facet, a side light incident facet, and a first planar facet connecting the oblique light incident facet and the side light incident facet,
wherein the side light incident facet is disposed between the oblique light incident facet and the legs,
wherein a width of the side light incident facet is greater than that of the oblique light incident facet,
wherein a line connecting a top of the light incident portion and a point that adjoins the oblique light incident facet and the first planar facet forms a first acute angle with respect to the lower surface, and
wherein another line connecting a bottom of the side light incident facet and a point that adjoins the first planar facet and the side light incident facet forms a second angle greater than the first acute angle with respect to the lower surface.
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