LASER MACHINNING APPARATUS AND METHOD

摘要

PURPOSE: A laser processing apparatus and method are provided to maintain constant energy of a laser beam irradiated on a work piece and reduce the output of an oscillator, thereby reducing power consumption. CONSTITUTION: A laser processing method is as follows. An oscillated laser beam is irradiated on a transparent work piece(50) through a first optical path(101). The laser beam passing through the work piece is collected through a second optical path(102). The collected laser beam is joined to the first optical path and irradiated on the work piece again.