| 摘要 |
<p>The apparatus (Figure 1) comprises a lamp (8) mounted in a housing (2) so as to delivery light via an exit aperture (3) of the housing. A light guide member (15) is mounted in the housing and comprises a block of fused silica having an input face (16) adjacent to the lamp and an output face at the exist aperture. The light guide member is tapered in cross section towards the output face to concentrate light from the lamp and the side faces, (18, 19) of the light guide member are externally coated with a reflective coating (20). The apparatus is useful in therapeutic of human or animal skin, the solid light guide member preventing ingress of contaminants and providing safety in the event of lamp failure. <IMAGE></p> |
