AUTONOMOUS LIGHT POWER DENSITY DETECTORS

An example of an apparatus is provided. The apparatus includes a power sensor to measure a power used to emit light. In addition, the apparatus includes a light source controller to control a light source to change an intensity of the light emitted by the light source. Furthermore, the apparatus includes a boundary detector to detect a room boundary. The apparatus also includes a device sensor to determine a position of a proximate device. The apparatus further includes a communications interface to communicate with the proximate device to transmit measured data to the proximate device and to receive device data from the proximate device. Also, the apparatus includes a processor to calculate a lighting power density based on the proximate device data and the measured data. The lighting power density is to be used by the light source controller to adjust the power used to emit the light.