PIERCING DEVICE FOR PRINTED CIRCUIT BOARD

摘要

PURPOSE:To work a hole having an optional shape by changing the focal length of a concave reflection mirror by focusing and irradiating laser light to the part to be worked of a printed circuit board from a laser oscillator provided on one side of said circuit board and reflecting the laser light past the part to be worked by the mirror provided on the opposite side thereby focusing the laser light to the part to be worked. CONSTITUTION:A laser oscillator 1 and a condenser lens 2 are disposed on one side of a printed circuit board 3 to be worked and a concave reflection mirror 4 is disposed on the opposite side. Laser light is oscillated from the oscillator 1 and is focused and irradiated to the part to be worked of the board 3 by the lens 2. The laser light past the part to be worked is reflected by the mirror 4 and is again focused to the part to be worked. The hole having an optional shape is worked to the circuit board by changing the focal length o the mirror 4.