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Chapter 5 / The Electronics
self-contained IR ranging system incorporating an IR transmitter,
receiver, optics, filter, detection, and amplification circuitry. The unit
is highly resistant to ambient light and nearly impervious to variations
in the surface reflectivity of the detected object.
Unlike many IR systems, it has a fairly narrow field of view, making it
easier to get the range of a specific target. The field of view changes
with the distance to an object, but is no wider than 5 cm (2.5 cm either
side of center) when measuring at the maximum range. One negative
about this range finder is its starting range of 10 cm. Figure 5.48 shows
the physical dimensions of the range finder and its connector
(www.hvwtech.com).

Figure 5.48
Physical dimensions of the range finder.

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