| 摘要 |
<p>PURPOSE: To provide a device for an adjusting method for lighting state of a lighting system in order to control the average illuminance on an object surface to be illuminated and carry out more comfortable illumination. CONSTITUTION: A lighting system is installed wherein the system has a control part 2 which determines the lighting condition of an luminaire 5 based on data obtained by output signals from an illuminance detecting part 1, which can detect the illuminace of the surrounding to be illuminated by the luminaire 5, for every constant time determined by a timer part 4 and also on data stored in a memory part 3. The illuminance detecting part 1 is set at the point where the reflected light rays from the object face to be illuminated can be detected and based on the output signal from the illuminance detecting part 1, the luminaire 5 is so controlled as to make the average illuminance of the object face to be illuminated constant.</p> |
