Patent ID: 11885945
Assignee: LUTRON TECHNOLOGY COMPANY LLC
Field: Optics (Instruments)
Classification: CPC G  F | IPC F  G

Claim 12:
13. A lens for receiving light from at least one emitter, comprising:
a concave light entrance surface symmetric about a central axis extending into the lens, the concave light entrance surface to receive a light emission from a light source;
a light exit surface symmetric about the central axis; and
a total internal reflective (TIR) outer surface shaped as a compound parabolic concentrator (CPC) extending between the light entry region and the light exit region;
wherein a first portion of the light emission from the light source enters a first portion of the concave light entrance surface and departs the light exit surface as an uncollimated light portion; and
wherein a remaining portion of the light emission from the light source enters a second portion of the concave light entrance surface and departs the light exit region as collimated light portion that surrounds the uncollimated light portion.