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AS-11C User Manual
Applications
4.1.4 Mirror target
When measuring a mirror target, it can only be effectively measured when the target
surface is perpendicular to the incident laser. If the incident angle of the laser is not
perpendicular, the actual diffuse reflectance the sensor receives will decrease, which will
makes it impossible to measure. And the actual measurement result would rather be the
shadow of the target than the target itself . See the figure 4.3.
Figure 4.3 Mirror measurement
4.1.5 Transparent media
When there is a transparent medium (such as clean water) in the surrounding
environment, targets inside or behind the medium can be detected. However, because the
light will be refracted in the transparent media, the measured target position will be
deviated.
As shown in “Figure 4.4”,the target is actually located on the refracted optical path, and
the measurement result is located on the straight optical path.
Figure 4.4 Transparent medium measurement
In addition, the AS-11C may also receive two reflection echoes, one from the actual
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