LED LIGHTING UNITS, MATERIALS, AND OPTICAL COMPONENTS FOR WHITE LIGHT ILLUMINATION

摘要

Materials and optical components formed thereof that are suitable for use in lighting units to obtain or approximate white light illumination, including lighting units that utilize one or more light-emitting diodes (LEDs) as a light source.

主权项

1. An LED-based lighting unit comprising:
an LED-based light source that generates blue light; an optical component through which the blue light passes, the optical component comprising a phosphor blend; wherein the phosphor blend comprises at least a yellow phosphor and a red phosphor, the yellow phosphor converting at least a portion of the blue light to yield an emission that includes yellow light as a result of the phosphor coating being excited by the blue light, the red phosphor emitting a red light; wherein the yellow light, the red light, and an unconverted portion of the blue light producing in combination a visible light perceived by an average human eye to be a white light and characterized by a CSI value of about zero or greater.