| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lighting system capable of varying the margin of a control value and of attaining comfortable lighting meeting the environment used or purpose of use. SOLUTION: In this lighting system, a microcomputer 4a of a control part 4 calculates an average value of the output values of a brightness sensor 3 within a predetermined period to memorize the average value with the output values as a set point S. Also, the microcomputer 4a estimates an margin Su in the plus direction of the margin of a brightness control value and an margin Sl in the minus direction based on the memorized set point S and sets the respective margins Su and Sl are found by operating a predetermined expression.</p> |
