| 摘要 |
<p>Apparatus comprising a laser beam generating device for generating a laser beam, and beam focusing means (14) operable to focus the generated laser beam at a distance remote from the apparatus so as to provide intense heat in a selected small area at that distance, the beam focusing means (14) comprising a focusing system (15) comprising focusing optical elements (21, 22), e.g. lenses/mirrors located in the path of the beam and arranged to diverge the beam, and a reflecting system comprising reflective elements (19, 18) for reflecting the divergent beam from the focusing system (15) and directing it along the focusing path so as to converge at the selected area.</p> |
