Patent ID: 8066417
Filing Date: 2011-11-29
Classification: G02B,H01L

Abstract:
1. An apparatus for coupling a light emitting diode (LED) to a light guide and adapted to mount within a base of a compact fluorescent lamp (CFL) assembly, the apparatus comprising: an LED for emitting light in at least a first direction; a light guide having a proximal end positioned adjacent the LED for receiving light emitted therefrom, and a distal end remotely spaced from the proximal end from which light exits the light guide; and a coupler interposed between the LED and the proximal end of the light guide for transferring a high ratio of light from the LED to the light guide, the coupler including one of a parabolic or aspheric inner reflector surface having a narrow first end at least partially encompassing the LED and a wide second end that at least partially encompasses the proximal end of the light guide.