Patent ID: 11920781
Assignee: NICHIA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A lighting device comprising:
a light source;
a first optical element configured to convert light emitted from the light source into substantially parallel light; and
a plurality of second optical elements arranged in a first direction,
wherein each of the plurality of second optical elements has a light incident surface,
wherein each of the plurality of second optical elements guides at least a portion of the substantially parallel light incident on the light incident surface in a second direction intersecting the first direction and guides another portion in the first direction,
wherein each of the plurality of second optical elements has a lateral surface provided at a farthest location of each respective second optical element of the plurality of second optical elements in a direction opposite to the second direction, and
wherein the lateral surface of each of the plurality of second optical elements is offset in the direction opposite to the second direction as compared to the lateral surface of an adjacent second optical element of the plurality of optical elements as a distance from the light source increases.