In the optical beam pointing system configured as described above, {HEAD ~ the projection angle} of {TAIL ~ each visible light beam} is always automatically corrected while the visible light beam is being projected 
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In the optical beam pointing system configured as described above , { HEAD ~ the projection angle } of { TAIL ~ each visible light beam } is always automatically corrected while the visible light beam is being projected
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH