A laser radar device adapted to ensure that the output from the laser is eye-safe. A means for applying spatial dither to the output of the laser source, such as a moveable optical arrangement. This causes the point of focus of the transmitted beam to traverse a target area by small amounts, reducing the overall radiation exposure at any particular point of focus, but having negligible impact on wind speed measurement for example. Alternative arrangements for ensuring eye-safety include periodically reducing the laser power density, gating the output or altering the focussing of the transmitted beam.
申请公布号
WO2010020755(A2)
申请公布日期
2010.02.25
申请号
WO2009GB01975
申请日期
2009.08.12
申请人
QINETIQ LIMITED;HARRIS, MICHAEL;STONE, STEVEN, MATTHEW;LEWIN, ANDREW, CHARLES
发明人
HARRIS, MICHAEL;STONE, STEVEN, MATTHEW;LEWIN, ANDREW, CHARLES