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Methods and apparatus for ophthalmic devices including cycloidally oriented liquid crystal layers

  • US 9,592,116 B2
  • Filed: 09/16/2014
  • Issued: 03/14/2017
  • Est. Priority Date: 09/17/2013
  • Status: Active Grant
First Claim
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1. An ophthalmic lens device with a variable optic insert positioned within at least a portion of an optical zone of the ophthalmic lens device, wherein the variable optic insert comprises:

  • a curved front surface and a curved back surface, wherein the front surface and the back surface are configured to bound at least a portion of one chamber;

    an energy source embedded in the variable optic insert in at least a region comprising a non-optical zone; and

    a layer containing liquid crystal material positioned within the at least one chamber, the layer includes regions of liquid crystal material aligned in a pattern across at least a first portion of the variable optic insert that varies with a cycloidal pattern, wherein the cycloidal pattern is the orientation pattern drawn by a line segment connecting opposite points in a circle as the circle moves on a radial path, the cycloidal pattern is modified by contraction along the radial path such that locations of orientations in liquid crystal orientation aligning with a radial axis across at least a first portion of the optic insert have a parabolic and higher order dependence on a radial dimension, and the layer containing liquid crystal material and varying with the cycloidal pattern assumes a curved shape.

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