| 摘要 |
PROBLEM TO BE SOLVED: To easily match a leading part with a target signal and to highly accurately match the position of the leading part with a target position. SOLUTION: A condenser lens part 5 including a condenser lens 51 and a lens holding part 52 for holding the lens 51 at its one end is integrally molded. The other end of the lens holding part 52 of the lens part 5 is fixed on one end of a case 4 on which the 2nd end of a light guiding body 3 is arranged. A cap 6 for protecting the lens part 5 by covering it is formed so as not to interrupt the radiation of light to the external and light incidence from the external. The diameter and tip part of the outside cap 6 can be tapered by tapering the diameter of the holding part 52 of the lens part 5 almost to the same diameter of the lens 51. |
