A parabolic, spherical, or other standard conic curvature is provided on {HEAD ~ the convex surface}, which has {TAIL ~ 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 
A parabolic , spherical , or other standard conic curvature is provided on { HEAD ~ the convex surface } , which has { TAIL ~ 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
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH 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