| 摘要 |
<p>PROBLEM TO BE SOLVED: To effectively utilize reflective light from a reflector and a direct light from a light source bulb. SOLUTION: A hologram 6A that uses direct light L4 from a light source bulb 4 as reference light and uses emitting light L6 as substance light is arranged among a lens 2 side, a reflector 5A and a light source bulb 4 side. The direction of the emitting light L6 from this hologram 6A and the direction of reflective light L7 from the reflector 5A are different. As a result, the reflective light L7 from the reflector 5A can directly be utilized through the hologram 6A and the direct light L4 from the light source bulb 4 can be utilized as the emitting light L6 from the hologram 6A by controlling the direct light L4 form the light source bulb 4 by the hologram 6A.</p> |
