| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical unit capable of fixing a sleeve member to a circuit board by welding while optically coupling a photoelectric conversion element to an optical fiber with high accuracy.SOLUTION: An optical unit includes: a circuit board 50 on which a photoelectric conversion element 20 is mounted; a sleeve member 30 fixed to the circuit board 50 and having a sleeve 32 into which a ferrule F attached to the end of an optical fiber F1 is fit; a welding member 60, made of a thermoplastic resin, provided on the circuit board 50 and welded to the sleeve member 30; and a positioning part 38, in the sleeve member 30, which is provided opposite to the circuit board 50 and comes into contact with the circuit board 50 when the welding member 60 is welded to the sleeve member 30. |
