PWS100 Present Weather Sensor - Campbell Scientific
PWS100 Present Weather Sensor - Campbell Scientific
PWS100 Present Weather Sensor - Campbell Scientific
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Section 8. Functional Description<br />
FIGURE 8-1. Laser unit<br />
Rod lens<br />
Cylindrical lens<br />
Doublet lens Grating Laser<br />
FIGURE 8-2. Laser unit showing light sheet production (not to scale)<br />
The sensor units as shown in Figure 8-3, comprise a lens, a filter tuned to the<br />
wavelength of the laser output and a photodiode placed at the back focal length<br />
of the lens with suitable amplification electronics. This photodiode then<br />
accepts light from the detection volume over a finite range of angles as shown<br />
in Figure 8-4.<br />
8-2
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