User Guide

RS-Ruby Users’ Manual
19
9 Reflectivity
The reflectivity is included in the data field of MSOP packet. Reflectivity is a scale to
evaluate the ability of the object reflection of light. This value is highly related to the
material of measured object. Hence, the character can be used to distinguish the different
materials.
RS-Ruby reports reflectivity values from 0 to 255 with 255 being the reported reflectivity
for an ideal reflector. Diffuse reflection reports values from 0 to 100, with the weakest
reflectivity reported from black objects and strongest reflectivity reported from white object.
Retro-reflector reports values from 101 to 255.
Figure 9. Calibration of reflectivity.
The value of reflectivity is already encapsulated in MSOP. It means that the reflectivity can
be directly read.
Diffuse Reflector
Retro-Reflector
Black, diffuse reflector
Reflectivity
≈
0
Black, diffuse reflector
Reflectivity < 100
Retro-Reflector is covered
with semi-transparent
Reflectivity > 100
Retro-Reflector without
any coverage
Reflectivity
≈
255