LIGHTING DEVICE

摘要

[Problem] To make it possible to arbitrarily change a lighting mode in an arbitrary region within a lighting range without complicating the structure of an optical system. [Solution] This lighting device 1 is provided with: a coherent light source that emits a plurality of coherent lights; optical elements that diffuse the coherent lights and light a prescribed lighting range; and a timing control unit that individually controls the timing for the entrance of the coherent lights into the optical elements or the timing for the lighting of the lighting range. The optical elements are provided so as to correspond with the coherent lights, and have a plurality of diffusion regions into which the corresponding coherent light enters. The diffusion regions are capable of lighting the lighting range by means of the diffusion of the incoming coherent lights. The diffusion regions each have a plurality of component diffusion regions. The component diffusion regions each light partial regions within the lighting range by means of the diffusion of the incoming coherent lights. The partial regions lit by the component diffusion regions differ from each other at least in part.