SICK nanoScan3

The safety laser scanner operates on the principle of optical time-of-flight measure‐
ment. 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
14
O P E R A T I N G I N S T R U C T I O N S | nanoScan3 – EtherNet/IP™ 8027909/2023-02-22 | SICK
Subject to change without notice