| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device for a hologram which is thin and has less weight, being convenient to carry.SOLUTION: There are provided a light source 2, a light guide plate 4 for propagation of light from the light source, a holographic optical element 5 for lighting which receives at least a part of the light propagated in the light guide plate and radiates reproduction lighting light at a specified angle to an image reproduction hologram 6 in which a solid image is recorded, and a holding means 7 for holding the light guide plate, the holographic optical element for lighting, and the image reproduction hologram. |
