SICK nanoScan3 I/O

The safety laser scanner operates on the principle of time-of-flight measurement. It
emit
s light pulses in regular, very short intervals. If the light strikes an object, it is
reflected. The safety laser scanner receives the reflected light. The safety laser scanner
calculates the distance to the object based on the time interval between the moment of
transmission and moment of receipt (∆t).


t
t
∆t


Figure 3: Principle of time-of-flight measurement
1
Transmitted light pulse
2
Reflected light pulse
A rotating mirror is situated in the safety laser scanner. The mirror deflects the light
pulse
s so that they scan a fan-shaped area.
227,5°
0°
90°
-47,5°

Figure 4: Light pulses scan an area
1
Angular resolution: the angular distance (in degrees) between 2 distance measurements
3 PRODUCT DESCRIPTION
12
O P E R A T I N G I N S T R U C T I O N S | nanoScan3 I/O 8024596/15VP/2019-11-15 | SICK
Subject to change without notice