Table 3. Standard deviation σR [mm] of range measurements in
dependence of colour and distance
Similar to the results from grey-scaled tables σR increases with
larger distances about a factor of two from 5m to 25m (Tab. 3).
The colours blue and green have slightly worse range accuracies
compared to red (colour of the laser). All light colours show
results similar to white (comparable to the values of the
Spectralon® tables of 90% and 98% reflectivity). Also the
effect of different incidence angles is nearly the same (Fig. 10).
Ambient lighting conditions have no significant influence on
the accuracy values. Overall it can be stated that the specific
influence of colour on the geometric quality is quite limited.