Lamp for vehicle
A lamp for a vehicle includes a light source, an inner lens part disposed forward of the light source, and a micro-cylinder lens part disposed forward of the inner lens part. The inner lens part includes a plurality of unit lenses disposed in a horizontal direction and physically connected to one another. The micro-cylinder lens part includes a plurality of micro-lenses disposed in the horizontal direction and physically connected to one another. A horizontal focal point of an incident surface of each of a first subset of the plurality of unit lenses is different from a horizontal focal point of an incident surface of each of a second subset of the other unit lenses.
1 . A lamp for a vehicle, the lamp comprising:
a light source;
an inner lens part disposed forward of the light source; and
a micro-cylinder lens part disposed forward of the inner lens part,
wherein the inner lens part comprises a plurality of unit lenses disposed in a horizontal direction and physically connected to one another,
wherein the micro-cylinder lens part comprises a plurality of micro-lenses disposed in the horizontal direction and physically connected to one another, and
wherein a horizontal focal point of an incident surface of each of a first subset of the plurality of unit lenses is different from a horizontal focal point of an incident surface of each of a second subset of the other unit lenses.
2 . The lamp of claim 1 , wherein an emergent surface of the inner lens part has a smooth curved shape.
3 . The lamp of claim 1 , wherein the inner lens part has a geometric shape in which horizontal focal points of incident surfaces of the unit lenses become distant, in a forward/rearward direction, from the unit lenses as a distance from a first point in the inner lens part increases in the horizontal direction.
4 . The lamp of claim 3 , wherein the inner lens part has a geometric shape in which the horizontal focal points of the incident surfaces of the unit lenses become close, in the forward/rearward direction, to the unit lenses as a distance from a second point in the inner lens part increases in the horizontal direction.
5 . The lamp of claim 3 , wherein the first point is disposed in a horizontal center region of the inner lens part.
6 . The lamp of claim 1 , wherein each of the plurality of unit lenses optically correspond to a respective one the plurality of micro-lenses.
7 . The lamp of claim 1 , wherein the inner lens part has a geometric shape that becomes close to a rear side as a distance from a first side decreases in the horizontal direction.
8 . The lamp of claim 1 , wherein an emergent surface of the inner lens part has a geometric shape in which a curvature of an end region of a first side based on the horizontal direction is larger than a curvature of another region.
9 . The lamp of claim 1 , wherein a first subset of the plurality of micro-lenses in the micro-cylinder lens part are positioned forward of a second subset of the micro-lenses in the micro-cylinder lens part.
10 . The lamp of claim 1 , wherein the plurality of micro-lenses in the micro-cylinder lens part are positioned to become close to a rear side as a distance from a first side decreases in the horizontal direction.
11 . The lamp of claim 1 , wherein widths in a forward/rearward direction of the plurality of micro-lenses in the micro-cylinder lens part correspond to one another.
12 . The lamp of claim 1 , wherein a width in a leftward/rightward direction of each of a first subset of the plurality of micro-lenses in the micro-cylinder lens part is different from a width in the leftward/rightward direction of each of a second subset of the micro-lenses in the micro-cylinder lens part.
13 . The lamp of claim 1 , wherein curvatures of incident surfaces or emergent surfaces of the plurality of micro-lenses in the micro-cylinder lens part correspond to one another.
14 . The lamp of claim 7 , wherein a width in a leftward/rightward direction of each of one or more micro-lenses, which are positioned at an end of the first side based on the horizontal direction among the plurality of micro-lenses in the micro-cylinder lens part, is smaller than a width in the leftward/rightward direction of each of the other micro-lenses in the micro-cylinder lens part.
15 . A lamp for a vehicle, the lamp comprising:
a light source;
a micro-cylinder lens part disposed forward of the light source,
wherein the micro-cylinder lens part comprises a plurality of micro-lenses disposed in a horizontal direction and physically connected to one another, and
wherein a horizontal cross-sectional shape of an incident surface or an emergent surface of each of a first subset of the plurality of micro-lenses disposed in the micro-cylinder lens part is different from a horizontal cross-sectional shape of an incident surface or an emergent surface of each of a second subset of the micro-lenses.
16 . The lamp of claim 15 , wherein a first group of the plurality of micro-lenses disposed in the micro-cylinder lens part are grouped into a first micro-lens group in which a curvature of a horizontal cross-section of the incident surface is a first incident surface curvature, and
wherein a second group of the micro-lenses disposed in the microphone cylinder lens part are grouped into a second micro-lens group in which a curvature of a horizontal cross-section of the incident surface is a second incident surface curvature smaller than the first incident surface curvature.
17 . The lamp of claim 16 , wherein a third group of the micro-lenses disposed in the micro-cylinder lens part are grouped into a third micro-lens group in which a curvature of a horizontal cross-section of the incident surface is a third incident surface curvature smaller than the second incident surface curvature.
18 . The lamp of claim 17 , wherein the second micro-lens group is disposed between the first micro-lens group and the third micro-lens group in a leftward/rightward direction W.
19 . The lamp of claim 17 , wherein a horizontal cross-section of the emergent surface of each micro-lens in the first micro-lens group has a first emergent surface curvature,
wherein a horizontal cross-section of the emergent surface of each micro-lens in the second micro-lens group has a second emergent surface curvature smaller than the first emergent surface curvature, and
wherein a horizontal cross-section of the emergent surface of each micro-lens in the third micro-lens group has a third emergent surface curvature smaller than the second emergent surface curvature.
20 . The lamp of claim 15 , wherein a horizontal cross-section of the incident surface or the emergent surface of the micro-cylinder lens part comprises an alternation section in which concave regions having concave shapes and convex regions having convex shapes are alternately disposed in a leftward/rightward direction W, and
wherein the entire alternation section has a smooth shape.