Illumination apparatus confining light by total internal reflection and methods of forming the same

摘要

In various embodiments, an illumination apparatus includes an air gap between a sub-assembly and a waveguide attached thereto at a plurality of discrete attachment points, as well as a bare-die light-emitting diode encapsulated by the waveguide.

主权项

1. An illumination device comprising:
a waveguide; a sub-assembly attached to a first surface of the waveguide only at a plurality of discrete attachment points, an air gap separating the first surface of the waveguide and the sub-assembly between the plurality of discrete attachment points; a light-emitting diode (LED) disposed over the sub-assembly and at least partially disposed within the waveguide, light emitted by the LED being in-coupled into the waveguide; and a reflector disposed over at least a portion of a second surface of the waveguide to confine light within the waveguide.