{TAIL ~ The aspheric surface} of revolution is of a design to reduce natural aberrations inherent in imaging using {HEAD ~ surface} of revolutions of the conic family of curves 
{ TAIL ~ The aspheric surface } of revolution is of a design to reduce natural aberrations inherent in imaging using { HEAD ~ surface } of revolutions of the conic family of curves
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH