| 摘要 |
PROBLEM TO BE SOLVED: To enable realizing high density arrangement where a large number of light receiving members are arranged, by using constitution where tip parts of the light receiving members are made spherical, shapes viewed from an optical axis direction are made hexagonal, and flanges are excluded. SOLUTION: A light receiving member 4 has structure where the shape viewed from the direction of an optical axis X is made hexagonal, the tip part is made spherical and formed of transparent epoxy resin, preferably, and flanges are not used. Since flange parts which are used for auxiliary positioning at the time of attaching light emitting diodes are excluded, interval between the light emitting diodes can be reduced, and mounting of high density is enabled. |
