FIELD: lighting.
SUBSTANCE: invention relates to field of lighting systems and, more specifically, to method and system for detecting an object in a region, ambient lighting device with split light beam. Result is achieved due to that lighting device (200) includes first light source (203), second light source (205) and sensor (216). First light source (203) is capable of emitting first light beam (204), adapted for lighting a first given area. Second light source (205) is configured to emit second light beam (206), adapted for lighting background area surrounding first given area. Sensor (216) is capable of detecting reflected first light beam (210) and reflected second light beam (212). Method includes determining whether objects are present in area (207), surrounding lighting device (200), based on comparison of information, indicating signal level of detected reflected first light beam (210), and information indicating signal level of detected reflected second light beam (212).
EFFECT: reduced power consumption of lighting systems.
15 cl, 10 dwg
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