| 摘要 |
PURPOSE:To allow stable processing with optimum energy by using the result obtd. by detecting the intensity distribution of a laser beam in an imaging position as a control signal for adjusting the relative distance between a condenser lens and an incident end. CONSTITUTION:The laser beam L outputted from a laser oscillator 10 is memorized in a control section 26 by adjusting the distance D between the axial center of the 1st condenser lens 12 and the incident end at the end face of a core part 20 by an image sensor 24 in such a manner as to attain a peak value. The image sensor 24 and light attenuation filter 23 at the focal point position of the 2nd condenser lens 21 are removed and the processing by ordinary irradiation with the laser is executed. The memory signal of the control section 26 is outputted to a pulse motor 16 in such a manner that an optimum intensity distribution is obtd. |
