| 摘要 |
PROBLEM TO BE SOLVED: To improve a utilization factor of the light of a light source in a front lighting system used by being disposed on a front surface of an object to be illuminated such as a reflection type liquid crystal display. SOLUTION: A light leading body 24 of a front light 20a is provided with a light incident surface 25, an interface 28 and an interface 23. Inclined parts 22 are formed on the interface 23. On the other hand, on the interface 28, for example a reflection preventing film 13 is disposed as a reflection preventing means. COPYRIGHT: (C)2003,JPO |
