| 摘要 |
The optical radar appts. includes a source (1) providing a beam of coherent light, and a system (2) for directing the emitted beam so that it carries out a scan of the observed space. A detector is provided to sense the light reflected by an obstacle within the scanned space in order to determine the distance between the equipment and this obstacle. The scanning system includes a reflector (S) rotating about an axis which is fixed w.r.t. the source. The reflector has a number of reflecting surfaces which are distributed in an annular patter over the reflector. The surfaces are orientated in such a way as to provide a complete scan in two dimension over the observed space.
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