| 摘要 |
The present invention relates to a scanning tool (1) for scanning an object downhole. The tool has a longitudinal axis and comprises an emitting device (2) for emitting radiation, a lens (3) for transmitting the radiation in a predetermined pattern (4) of radiation, and a receiving device (5). In a first position of the tool, the pattern of radiation is reflected on the object (6) to be scanned and the reflected radiation is received in the receiving device resulting in a first measurement. |
