| 摘要 |
<p>A laser speed gun comprises a laser ray transmitter provided on an optical axis with a laser ray emitting device and with a short distance lens and located at an intermediate location therebetween on said optical axis, a beam splitter allowing laser rays to pass through and reflect visible light toward a CCD camera; a laser ray receiver provided on an optical axis with a laser ray receiving device and with a long distance lens located at an intermediate location between them on said optical axis, a beam splitter allowing laser rays to pass through and reflect visible light from a target toward a CCD camera; and two CCD cameras, one of which is associated with the laser ray transmitter optics and receives reflected light from its beam splitter, and the other which is associated with the laser ray receiver optics and receives reflected light from its beam splitter</p> |
