{TAIL ~ A field} of view of the image detecting module covers {HEAD ~ the third light guide component} and the fourth light guide component 
{ TAIL ~ A field } of view of the image detecting module covers { HEAD ~ the third light guide component } and the fourth light guide component
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH