Patent ID: 11920780
Assignee: LUTRON TECHNOLOGY COMPANY LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A lens to receive light from a plurality of light-emitting diodes (LEDs), the lens comprising:
a lens body that includes:
a concave entrance surface rotated about a central axis, at least a portion of the concave entrance surface including a diffusion surface; and
a total internal reflection (TIR) outer surface rotated about the central axis;
wherein a first portion of light emitted by the plurality of LEDs passes through the diffusion surface of the concave entrance surface and reflects off the TIR outer surface of the lens body prior to exiting the lens as a collimated light; and
wherein a second portion of the light emitted by the plurality of LEDs exits the lens body as non-collimated light.