| 摘要 |
<p>A laser welding beam transport system in which the laser beam (14) emanating from the laser generator (10) is expanded in diameter in an expander (16) at a location close to the generator, and then is transported in its expanded diameter to a remote location where the beam is reduced in diameter in a beam reducer (26) at a location close to the welding station (28) for the purpose of maintaining a relatively constant power density of the beam at the station over a significant range of working travel of the working station.</p> |
