| 摘要 |
<p>The rangefinder has an emission device for emitting laser pulses of N different wavelengths, where N is an integer that is greater than one, and emission frequency for each wavelength is lesser than a preset threshold frequency. A detection device having an optical coupler (14) detects pulses reflected by a remote object, and an accumulating device accumulates the detected pulses. The emission device has a wideband amplifier (13) to amplify each of the emitted pulses, and emitters (10) e.g. laser diodes, each connected to an optical multiplexer (12) by an optical fiber (11).</p> |
