{TAIL ~ a target surface} arranged at a distance from {HEAD ~ the lighting module} to receive a uniform distribution of the partially collimated light 
{ TAIL ~ a target surface } arranged at a distance from { HEAD ~ the lighting module } to receive a uniform distribution of the partially collimated light
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH