{TAIL ~ The numerical aperture} of {HEAD ~ the first aspheric collimating lens} is at least 0.3 
{ TAIL ~ The numerical aperture } of { HEAD ~ the first aspheric collimating lens } is at least 0.3
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH