| 摘要 |
PCT No. PCT/NL97/00680 Sec. 371 Date Jul. 30, 1999 Sec. 102(e) Date Jul. 30, 1999 PCT Filed Dec. 9, 1997 PCT Pub. No. WO98/26259 PCT Pub. Date Jun. 18, 1998Device (20) for measuring pressure waves in a liquid medium (E), comprising; one or more sensor elements (23) permeable to optical radiation; one or more support members (22) on which a sensor element (23) is arranged in each case and which is at least slightly flexible; a chamber (25) at least partly enclosed by a support member (22) and filled with the liquid medium; and a second compensation chamber (27) which is actively coupled to the first compensation chamber via an at least partially flexible wall (26), wherein the second compensation chamber is filled with gas; and detection means for detecting changes in the length of the sensor element. |
