| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable to exactly control light intensity of illumination light, even when a light guide for illumination is exchanged. <P>SOLUTION: The lighting device is provided with a signal strength adjustment means (9), initially setting detection signals of monitor light (MS) at the same level as operation signals (DS) corresponding to light intensity of illumination light measured, in case of detecting light intensity (MB) of the monitor light branched from a light guide for illumination (3) irradiating light of a light source (2) as illumination light, and feedback-controlling the light source light volume comparing the operation signals (DS) inputted in accordance with the light intensity (LB) of the illumination light to be irradiated and the detection signals (MS). <P>COPYRIGHT: (C)2007,JPO&INPIT |
