| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system in which temperature rise of a Fresnel lens or a light-emitting means at continuous emission is restrained, and capable of increasing the number of continuous emission without generating thermal obstacles of the Fresnel lens or the light-emitting means. <P>SOLUTION: An opening 42 penetrating through the Fresnel lens 40 in a plate-thickness direction is formed at a center part of the plate-shaped Fresnel lens 40 arranged at a front part of the light-emitting unit 22. <P>COPYRIGHT: (C)2012,JPO&INPIT |
