| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a pure functional color by emitting a light which reaches a part having no chromatic color opaque part, of all lights incident on an inner lens, and obtaining only the light transmitting the inner lens as the functional color. SOLUTION: A functional color can be obtained with an inner lens 6. Consequently, a color filter for obtaining the functional color is not required, so that the number of parts becomes small. The light which is a direct emit light L5 from a light source bulb 4 (and parallel light L1 from a reflection surface 5) and reaches a chromatic color opaque part 8 of all lights incoming on the inner lens 6, is not emitted from the inner lens 6 and the chromatic color opaque part 8 by the chromatic color opaque part 8. On the other hand, the light which is the parallel light L1 from the reflection surface 5 (the direct emit light L5 from the light source bulb 4) and, of all lights incoming on the inner lens 6, reaching a part having no chromatic color opaque part 8, is emitted from the inner lens 6, so that only the light which has passed through the inner lens 6 is obtained as the functional color, and a pure functional color can be obtained.</p> |
