| 摘要 |
<p>1275018 Cutting by lasers HUGHES AIRCRAFT CO 14 Dec 1970 [19 Jan 1970] 59221/70 Heading B3V [Also in Division G2] In a cutting or burning device using a laser, a focusing lens 14 is held in a mount functioning as a heat-sink and further cooled by flow of gas from 24. The gas also protects the optics from dirt entering the housing. A mirror 12 is incorporated and is also cooled and protected by a flow of the gas. The gas may regulate, or prevent, burning of the workpiece 16.</p> |
