In the imaging standby state, the quick return {HEAD ~ minor} 6 inside {TAIL ~ the minor box} 5 is retained at an angle of 45 degrees—to the optical axis L 
inside
In the imaging standby state , the quick return { HEAD ~ minor } 6 inside { TAIL ~ the minor box } 5 is retained at an angle of 45 degrees — to the optical axis L
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH