| 摘要 |
PROBLEM TO BE SOLVED: To reduce leakage of light from a protrusion for positioning.SOLUTION: A light guide body comprises an incident place where light from light emitting means is made incident, a light guide section which propagates light incident via the incident plane, a reflection section which reflects the light to be propagated, an emission place where light reflected by the reflection section is emitted, and a protrusion for positioning. The protrusion is provided at a downstream side of the reflection section. |
