| 摘要 |
PROBLEM TO BE SOLVED: To provide a light emitting device which can increase its light utilization efficiency and light coupling efficiency with an optical fiber, by collecting forward light emitted therefrom. SOLUTION: A resin molded part 15 has a double structure of an inner sealing member 16 and an outer sealing member 17. The inner sealing member 16 is made of transparent resin material having a relatively large refractive index, and is shaped to, e.g. a truncated cone. The outer sealing member 17 is made of transparent or semi-transparent resin material having a relatively small refractive index. Such a light emitting element 13 as an LED is sealed on a side of the inner sealing member 16 having a small area, while an end face of a side of the inner sealing member 16 having a large area is exposed from the outer sealing member 17. |
