| 摘要 |
PURPOSE: To prevent a condensing optical part from being moved even if an optical fiber moves, to prevent an optical axis from being out of fix and to prevent the optical fiber from being damaged thermally. CONSTITUTION: An optical fiber 3 and its holding part 4 are fixed; and the projection 6 of a sliding part 12 is allowed to slide along the groove 2a formed in a holder 2 which is fixed by a laser generator 1 and a bolt 15; therefore, the sliding part 12 is fixed by a stopper 7 with a screw 7a, at the focused position of the converging lens 8 of the condensing optical part 11. In addition, the condensing optical part 11 and the converging lens 8 are moved in three directions X, Y, Z by means of the stopper 7 and an adjusting screw, making the converged laser beam accurately enter into the optical fiber 3. |
