| 摘要 |
An offset probe (10) having an elongate illuminating channel (12) and an elongate collecting channel (14) laterally displaced from the illuminating channel (12) at the distal end (24) of the probe (10). A reflective element (26) is disposed between the channels (12,14) and arranged to reflect incident optical radiation in a direction away from the distal end (24). A transparent window (28) at the distal end (24) may be employed to provide, in use, a volume free from sample material through which radiation may pass to and from the reflective element (26). |
