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 {TAIL ~ said trough type reflector} 
of
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 { TAIL ~ said trough type reflector }
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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL