| CPC F21S 41/275 (2018.01) [F21S 41/141 (2018.01); F21S 41/32 (2018.01); F21S 41/40 (2018.01); F21Y 2115/10 (2016.08)] | 8 Claims |
|
1. A lamp comprising:
a light source configured to emit light; and
a lens disposed on a front side of the light source,
wherein the lens comprises:
an input surface configured to receive the light emitted from the light source and defining a rear side of the lens, the input surface including:
a concave surface recessed forward to be concave when an upper side of the input surface is viewed in parallel to an upward/downward direction; and
a convex surface protruding rearward to be convex when the upper side of the input surface is viewed in parallel to the upward/downward direction, the convex surface being connected to the concave surface in a first direction that crosses a forward/rearward direction and the upward/downward direction, and
an output surface disposed on a front side of the lens and configured to emit the light, and
wherein the output surface extends in the first direction and includes:
a plurality of protruding regions extending outward from the lens; and
a plurality of grooves recessed inward into the lens,
wherein the input surfaces include a plurality of concave surfaces and a plurality of convex surfaces,
wherein the plurality of concave surfaces and the plurality of convex surfaces are alternately arranged along the first direction,
wherein the first direction is defined as a direction being perpendicular to the upward/downward direction, and crossing the forward/rearward direction and a leftward/rightward direction,
wherein the plurality of concave surfaces include a first concave surface,
wherein the plurality of convex surfaces include a first convex surface and a second convex surface that are spaced apart from each other in the first direction, with the first concave surface being interposed therebetween,
wherein the first convex surface is disposed on a front side of the second convex surface, and
wherein the first convex surface is disposed between the first concave surface and the second convex surface with respect to the forward/rearward direction.
|