{HEAD ~ A parabolic, spherical, or other standard conic curvature} is provided on {TAIL ~ the convex surface}, which has a mirrored coating applied, and the concave surface has an aspheric curvature and an anti reflective coating, which functions as a corrective lens to reduce spherical aberration and other naturally occurring optical aberrations 
{ HEAD ~ A parabolic , spherical , or other standard conic curvature } is provided on { TAIL ~ the convex surface } , which has a mirrored coating applied , and the concave surface has an aspheric curvature and an anti reflective coating , which functions as a corrective lens to reduce spherical aberration and other naturally occurring optical aberrations
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH