As such, it is possible to obtain a detection signal proportional to the amount of actually reflected light, i.e. the average light superimposed by the varying light component, {HEAD ~ incident} on {TAIL ~ the photo detector} 6 
on
As such , it is possible to obtain a detection signal proportional to the amount of actually reflected light , i.e. the average light superimposed by the varying light component , { HEAD ~ incident } on { TAIL ~ the photo detector } 6
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH