3.4 Ranging Characteristics
TF-Luna minimizes the impact of external environment on ranging performance by optimizing light
path and algorithm.
TF-Luna’s ranging blind zone is 20 cm. Any distance output less than 20 cm is unreliable. The
operating range of black and white targets is different:
The operating range of TF-Luna detecting black target with 10% reflectivity is 0.2-2.5m; the
operating range of TF-Luna detecting white target with 90% reflectivity is 0.2-8m.
The ranging data is reliable only if the reflection surface fully covers the light spot, so the diameter
of the object must at least the same as the diameter of the light spot, and that diameter depends on
FoV of TF-Luna. The minimum diameter of the object surface can be determined by the following
formula:
d = 2 ∗ D ∙ tanβ
In the formula, d represents the minimum diameter, D is the distance of the object, and β is the
half FoV of TF-Luna. Common values are shown in Table 4 for your convenience:
Table 4 Distance and minimum diameter
If the light spot reaches two objects with different distances as Figure 2, the output distance value
(Dist) will be abnormal, which may cause error for high-accuracy applications. Please try to avoid this
situation for better accuracy and performance.
To Next Page
Loading...
Need help?
General
