Semiconductor laser output head focusing structure and focusing method

The invention relates to a semiconductor laser output head focusing structure and a focusing method, and relates to the technical field of laser manufacturing, the focusing structure specifically comprises a light beam collimation part, an output light beam focusing part, a focus position adjusting part and a compressed air guiding and blowing part; the position of the collimating mirror is adjusted through a thread pair composed of the SMA connector and the collimating mirror adjusting cylinder, so that divergent light beams of the light source are changed into parallel light beams. The collimated light beam is converged on the workpiece through the focusing lens and the diaphragm, the adjusting hand wheel drives the screw thread pair formed by the SMA connector and the focusing lens adjusting cylinder so as to adjust the focusing lens to a proper position, so that the focusing is completed, the whole focusing process is rapid and stable, and the laser stability in the focusing process is ensured. 本发明涉及一种半导体