LED LIGHTING DEVICE WITH LIGHT SENSOR AND CONTROL METHOD

摘要

Lighting device comprising a plurality of LEDs (16) and at least a first supply circuit (11) adapted to supply a drive current (Ip) to forward bias one or more LEDs in said plurality of LEDs (16) and comprising, in said plurality of LEDs, at least one LED (16) which is operableLED (16) which is operable as a light sensor a second supply circuit (17) adapted to apply a reverse bias to said at least one LED (16) which is operableLED (16) which is operable as a light sensor, and a circuit (18, 19, 20) for detecting a photocurrent (IF) of said at least one LED (16) which is operableLED (16) which is operable as a light sensor.