| 摘要 |
<p>An arc welding head (13) suitable for robotic welding has a fiber optic bundle (12) and remotely located laser light source (24) which is imaged onto an end of the fiber optic bundle (12) and optically linked to substantially a single fiber of the fiber optic bundle (12). The light source (24) is then repetitively scanned across the coherent arrangement of fibers within the bundle (12), such that, a substantial portion of the transmitted light will be sequentially delivered to each individual fiber within a row of fibers and subsequently delivered to a workpiece (11). This arrangement provides a high signal to noise ratio making the laser light reflected from the workpiece (11) easily distinguishable from the optical "noise" generated by the welding arc flash.</p> |
