| 摘要 |
PROBLEM TO BE SOLVED: To prevent an edge from being illuminated brightly and to evade the occurrence of a bright line by linearly forming a light absorbing area on a member directly attached to the emitting surface or the back surface of a plate-like member. SOLUTION: A primary light source is formed of a specified light source 7 emitting illuminating light and a reflection member 18 reflecting the illuminating light emitted from the light source 7. The end of the member 18 on the emitting surface 2C side at this time is directly superposed on the surface 2C and the light absorbing area AR2 absorbing the illuminating light is linearly formed extending over the edge EU of the plate-like member at the end on the surface 2C side. The area AR2 is formed to be inconspicuous when it is observed from the surface 2C and prevents the illuminating light reflected by the member 18 from entering the edge EU of the incident surface 2A on the surface 2C side and the edge EU from being illuminated brightly. Then, the edge EU is prevented from being illuminated with the illuminating light propagated in the base material of the member 18 by directly coming into contact with a light transmission plate 2. |
