Patent ID: 8508138
Filing Date: 2013-08-13
Classification: H05B,Y02B

Abstract:
1. A lighting system for dim ambience, comprising: at least a light source module, implemented in the ambience to provide illumination, wherein each of the light source module has a plurality of light emitting units, each of the light emitting units is respectively controlled to produce a luminance; a luminance detecting unit, detecting a photopic luminance and a luminance ratio of the ambience, wherein the luminance ratio is defined as a ratio of a scotopic luminance to the photopic luminance; a processing and operation module, calculating out a mesopic luminance according to the photopic luminance and the luminance ratio, wherein when the photopic luminance is less than a dim-light setting value, a power control information is obtained by a fitness operation with a selected condition set, wherein the power control information is an optimized mesopic luminance after the fitness operation, wherein the selected condition set includes a mesopic luminance parameter, a photopic luminance parameter, and a power parameter being referenced; and a control unit, receiving the power control infoiniation to adjust the luminance of each of the light emitting units.