Abstract: Disclosed is a lighting apparatus having a complex sensor. The apparatus includes a short distance motion sensor to sense an object at a short distance, a long distance motion sensor to sense an object at a long distance, a signal amplifier to amplify signals from the sensors, a lamp to be adjustable in brightness in multiple stages, a timer to count a dark adaptation time, and a controller. The controller controls the lamp to a first brightness upon receiving a signal from the long distance motion sensor and to a second brightness higher than the first brightness upon receiving a signal from the short distance motion sensor and controls the timer to count the dark adaptation time at the second brightness, thereby reducing the brightness of the lamp by an illuminance within a dark adaptation threshold value set in the controller whenever the timer generates a counting signal.

Abstract: Disclosed is a lighting apparatus having a complex sensor. The apparatus includes a short distance motion sensor to sense an object at a short distance, a long distance motion sensor to sense an object at a long distance, a signal amplifier to amplify signals from the sensors, a lamp to be adjustable in brightness in multiple stages, a timer to count a dark adaptation time, and a controller. The controller controls the lamp to a first brightness upon receiving a signal from the long distance motion sensor and to a second brightness higher than the first brightness upon receiving a signal from the short distance motion sensor and controls the timer to count the dark adaptation time at the second brightness, thereby reducing the brightness of the lamp by an illuminance within a dark adaptation threshold value set in the controller whenever the timer generates a counting signal.