A semiconductor laser feeds a high frequency amplitude modulated light in {TAIL ~ the transmitting fiber optic}, which is projected by the transmitting optic module on the object in the form of {HEAD ~ a light spot} 
A semiconductor laser feeds a high frequency amplitude modulated light in { TAIL ~ the transmitting fiber optic } , which is projected by the transmitting optic module on the object in the form of { HEAD ~ a light spot }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD