Patent ID: 7959284
Filing Date: 2011-06-14
Classification: B29D,G02B,G02C

Abstract:
1. A method of generating an optic having an optical path difference (OPD) profile for correcting wavefront aberrations, comprising: (a) obtaining an OPD profile for correcting certain wavefront aberrations; (b) selecting a substrate material with a known index of refraction, Ns; (c) selecting a cover material with an index Nc that is more closely matched to the index Ns of the substrate material than the index of air Nair to Ns; (d) cutting an exaggerated surface profile into the substrate material that is proportionally expanded from said OPD profile by a factor: (Ns−Nair) divided by the absolute value of (Ns−Nc); and (e) covering the cut exaggerated surface profile with the cover material.