The present invention relates to {HEAD ~ imaging optics} in general, and, more particularly, to {TAIL ~ imaging lenses} 
The present invention relates to { HEAD ~ imaging optics } in general , and , more particularly , to { TAIL ~ imaging lenses }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL