The light deflection device scans the deflected light over an entire area of the picture information display element and {TAIL ~ an area} outside of {HEAD ~ an effective display area} of the picture information display element 
The light deflection device scans the deflected light over an entire area of the picture information display element and { TAIL ~ an area } outside of { HEAD ~ an effective display area } of the picture information display element
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH