{TAIL ~ Apparatus} 2 wherein said rotary scanner comprises a flat mirror for reflecting visible light which has been radiated by said line source and reflected from {HEAD ~ the surface} of said trough type reflector 
{ TAIL ~ Apparatus } 2 wherein said rotary scanner comprises a flat mirror for reflecting visible light which has been radiated by said line source and reflected from { HEAD ~ the surface } of said trough type reflector
TAIL TAIL TAIL TAIL TAIL 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 HEAD OTH OTH OTH OTH OTH