Patent ID: 7247813
Filing Date: 2007-07-24
Classification: B23K

Abstract:
1. A processing apparatus using a pulsed laser beam, comprising: a laser beam source which emits a pulsed laser beam; a homogenizer optical system which homogenizes an intensity of the laser beam emitted from the laser beam source in a two-dimensional plane; an irradiating section for irradiating a position of a processing target with the homogenized pulsed laser; a storing section for storing the position irradiated by the irradiating section; a monitoring section for monitoring an intensity of light reflected by the processing target; a first mechanism for irradiating the next irradiation position of the processing target with a homogenized pulsed laser beam when it is determined that the light intensity is normal with respect to a predetermined set value for processing the processing target as a result of monitoring by the monitoring section; and a second mechanism for returning to and again irradiating an insufficient position of the processing target stored in the storing section with the laser beam from the laser beam source when it is determined that the light intensity is insufficient with respect to a predetermined set value for processing the processing target as a result of the monitoring by the monitoring section.