Led-based illumination device reflector having sense and communication capability

An apparatus comprising:

• a reflector housing configured to be detachably coupled to an LED based illumination device configured to illuminate an environment, the reflector housing comprising:
• a flange having a surface facing the environment illuminated by the LED based illumination device;
• and
• a reflector having an input port configured to receive a first amount of light emitted from the LED based illumination device and an output port through which light passes toward the environment, wherein the reflector is configured to redirect at least a portion of the first amount of light emitted from the LED based illumination device toward the output port;
• a sensor coupled to the flange of the reflector housing such that at least a portion of the sensor faces the environment illuminated by the LED based illumination device;
• an reflector interface module coupled to the reflector housing, the reflector interface module configured to receive at least one signal from the sensor;
• and
• a first communications interface subsystem configured to transmit and receive communications signals to and from the reflector housing.