| 摘要 |
PURPOSE: To pierce a very small diameter hole by transmitting a reflected laser beam from a work piece to a radiation detector and measuring with converting into an electrical signal. CONSTITUTION: An original laser beam 56 from a long wavelength laser beam transmitter 41 is reflected by a mirror 51 and advanced toward a work piece 10. An original laser beam 56 is transmitted from a short wave length laser beam transmitter 42. A piercing depth monitor 43, when a focused laser beam 44 hits the work piece, receives a reflected radiation form the work piece 10. The monitor 43 has optical radiation detectors 45, 46, which receive radiation and convert these into an electrical signal, and controls a depth of laser beam piercing. A monitor 48 observes laser beam piercing of the work piece 10 with using a camera 47 connected to the monitor 48. A position controller 49 controls a position of the work piece 10 to conduct laser beam piercing at a desired position. After laser beam piercing, the work piece 10 is moved to a plating station 50, a surface of the hole and other desired parts of the work piece is plated. |
