High-order aberration correction for optimization of human visual function

• US 8,098,440 B2
• Filed: 04/06/2010
• Issued: 01/17/2012
• Est. Priority Date: 05/16/2006
• Status: Active Grant

• Current Assignee: Essilor International SA (EssilorLuxottica SA)
• Original Assignee: Ophthonix Incorporated
• Inventors: Jethmalani, Jagdish M., Dreher, Andreas W., Sverdrup, Lawrence H.
• Primary Examiner(s): Greece, James
• Application Number:
  US12/755,342
• Publication Number:
  US 20100195212A1
• Time in Patent Office: 651 Days
• Field of Search: 359/642, 359/643, 359/652, 351/159, 351/176, 351/177
• US Class Current: 359/652
• CPC Class Codes: G02B 25/001 Eyepieces
• CPC Class Codes: G02B 27/0025 for optical correction, e.g. distorsion, aberration
• CPC Class Codes: G02C 2202/22 Correction of higher order and chromatic aberrations, wave front measurement and calculation
• CPC Class Codes: G02C 7/02 Lenses; Lens systems ; Methods of designing lenses

Abstract

The present invention relates to the optimization of human visual function by correcting and/or optimizing high-order optical aberrations in high performance optical devices. The optimization is particularly useful for high performance devices used under low light conditions such as binoculars, rifle scopes, telescopes, microscopes, night vision goggles and laser eye protection devices.

Claims

1. A method of manufacturing an optical element, the optical element improving contrast sensitivity, low-contrast visual acuity, and vernier acuity in one or more eyes of a subject, the method comprising:

obtaining a prescription for the one or more eyes, wherein the prescription comprises corrections for one or more high order aberrations in the subject'"'"'s one or more eyes, wherein the prescription further comprises an aberration structure beyond a 3 mm diameter of the lens, wherein the aberration structure is selected to maximize a modulation transfer function (MTF) below a Nyquist resolution of the subject'"'"'s one or more eyes, wherein a Nyquist resolution limit of the Nyquist resolution is a minimum visual acuity measured due to a cone density in a human fovea;

applying the prescription to the optical element, wherein the optical element is configured for use with night vision goggles and further comprises a cured polymer, the cured polymer material comprising a fixed index of refraction, wherein the one or more high order aberrations are symmetrical high order aberrations, and

wherein the method further comprises controlling limit aliasing in an image intensifier tube with a modulation transfer function.

2. The method of claim 1, further comprising eliminating or modifying one or more high order aberrations to produce an optimal visual acuity and contrast sensitivity.

3. The method of claim 1, wherein the optical element further comprises a three-layered structure, the method further comprising:

correcting for the one or more low order aberrations of two outer layers of the three-layered structure, wherein a center layer of the three-layered structure comprises a sandwiched cured polymer material that has a fixed index of refraction that corrects the one or more high-order aberrations.

4. The method of claim 1, further comprising correcting aberrations introduced during manufacturing before one or more high order aberrations of the subject'"'"'s one or more eyes are corrected.