Benewake (Beijing) Co. Ltd.
Page8
The product’s lenses may be covered by dusts or dirt which may affect results, so please keep
those lenses clean.
The exposed circuit board is electrostatic sensitive. Please do not touch the circuit board of the
product barehanded. Please use ESD wrist strap or antistatic gloves to ground yourself if any
operation is necessary; Otherwise, the product may be damaged by static electricity.
2 Principle description and key parameters
2.1 Ranging Principle
TF-Luna is using Time of Flight (TOF) principle to measure distance, and it periodically emits near
infrared modulated waves. TF-Luna calculates the time by measuring the phase difference between the
original wave and the reflection wave and uses that time to get relative distance, as shown in Figure 1.
Figure 1: Schematics of TOF Principle
2.2 Basic Characteristic Parameters
Table 1: Parameters specification of TF-Luna
Description Parameter value
Operating range 0.2m~8m
①
Accuracy
±6cm@ (0.2-3m)
②
±2%@ (3m-8m)
Measurement unit cm (Default)
2°
②
③
① Operating range measured indoor based on a standard whiteboard with reflectivity 90% .
② This is theoretical, real value may be different.
③ 100Hz as default and only any factor (500/n, n can be any integer in [2, 500]) of 500Hz are available.
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