| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lighting apparatus which enables miniaturizing and reducing unpleasant feeling at low cost, by reducing the feeling of darkness at the area surrounding the pillar or partition, and close to the wall, window and the like. SOLUTION: The lighting apparatus is constructed by a light sensor 2 which detects reflected light from illuminated surface, a control block 1 which generates control signal corresponding to the detected value of the light sensor 2, lighting devices 3a, 3b which control the light output of lamps 4a, 4b with feedback so as to keep lighting intensity of illuminated surface almost constant, and a signal converter 5 which converts the control signal from the control block 1. Lighting intensity of illuminated surface is kept almost constant in such a way that in case the detected value of light sensor is bigger than prescribed value, the light output is reduced by the judgement that it became light, and in case the detected value thereof is smaller than prescribed value, the light output is increased by the judgement that it became dark.</p> |
