| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain stable illumination light with less variation of a light quantity. <P>SOLUTION: Lighting equipment includes a plurality of LEDs 14 which are arranged in line on a circumference of a base plate 13 of an emitter, and have light-emitting surfaces which emit the diffused light, two light guide rod members 11 which guide the diffused light to an illuminated region, a rotary motor 12 which rotatably drives the light guide rod members 11 with a center of the circumference as a rotation center, and a lighting control means which includes an emission timing control circuit 24 controlling emission timing of a plurality of the LEDs 14, and an LED drive control circuit 26, wherein the rotary motor 12 and the lighting control means are linked and operated so that the light quantity per unit time of the diffused light guided to the illuminated region may be within a predetermined range, and the light quantity emitted from the light guide rod members 11 is detected by a light quantity monitor 21, then the rotary motor 12 and the lighting control means are linked and operated so that the detected light quantity may become almost constant. <P>COPYRIGHT: (C)2007,JPO&INPIT |
