Operating Instructions
LMS1xx Laser Measurement Sensors
Product description
8012471/ZN27/2017-06-09
© SICK AG · Germany · All rights reserved · Subject to change without notice
25
Chapter
3
Fig. 8:
Degree of reflection
If the reflected energy returned is over 100 % (basis: Kodak standard) the incident beam is
not reflected diffusely in all directions, but is reflected in a specific direction (
). As a
result a large portion of the energy emitted can be received by the laser distance
measurement device. Plastic reflectors (“cats’ eyes”), reflective tape and triple prisms have
these properties.
Fig. 9:
Mirror surfaces
At mirror surfaces the laser beam is almost entirely deflected (
).
Instead of the surface of the mirror, it is possible that the object on which the deflected laser
beam is incident may be detected.
Fig. 10:
Object smaller than diameter of the laser beam
Objects that are smaller than the diameter of the laser beam cannot reflect all the energy
of the laser light (
). The energy in the portion of the laser light that is not reflected is
lost. This means that the scanning range is less than would be possible theoretically based
on the surface of the object.
