LED-based Lighting Unit With Optical Component for Mixing Light Output from a Plurality of LEDs

摘要

Methods and apparatus related to an LED-based lighting unit (10, 110) having an optical component for mixing light output from a plurality of LEDs (34, 134). In some embodiments the optical component may include at least one reflective surface interiorly thereof and the LEDs (34, 134) may be vertically arranged about the reflective surface. At least some of the LEDs (34, 34) may generate a light output generally directed toward the reflective surface. The reflective surface may be configured to direct at least some of the light output directly incident thereon through a light output opening (25, 125) of the optical component.

主权项

1. A LED-based lighting unit, comprising:
a longitudinally extending lighting unit axis (A, A1); a light output opening surrounding said lighting unit axis; a reflector positioned above said light output opening and surrounding said lighting unit axis; a plurality of LEDs positioned below said light output opening and surrounding said lighting unit axis, each of said LEDs emitting a light output having a light output central axis generally directed toward and perpendicular to said lighting unit axis; at least one reflective surface interposed between at least some of said LEDs and said lighting unit axis; wherein said reflective surface is positioned such that a plurality of said light output central axis are directly incident thereon; and wherein said reflective surface is configured such that a plurality of said light output central axis directly incident thereon are directed through said light output opening.