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

• US 9,784,993 B2
• Filed: 05/26/2016
• Issued: 10/10/2017
• Est. Priority Date: 09/17/2013
• Status: Active Grant

• Current Assignee: Johnson & Johnson Vision Care Incorporated (Johnson & Johnson)
• Original Assignee: Johnson & Johnson Vision Care Incorporated (Johnson & Johnson)
• Inventors: De Sio, Luciano, Flitsch, Frederick A., Pandojirao-S, Praveen, Pugh, Randall Braxton, Serak, Svetlan, Tabirian, Nelson V., Toner, Adam, Uskova, Olena, Riall, James Daniel
• Primary Examiner(s): Collins, Darryl J
• Application Number:
  US15/165,073
• Publication Number:
  US 20160266408A1
• Time in Patent Office: 502 Days
• Field of Search: 35115902, 35115903, 35115905
• CPC Class Codes: A61F 2/1624 having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
• CPC Class Codes: A61F 2/1627 for changing index of refraction, e.g. by external means or by tilting
• CPC Class Codes: A61F 2/1635 for changing shape
• CPC Class Codes: A61F 2/1648 Multipart lenses
• CPC Class Codes: A61F 2002/1696 Having structure for blocking or reducing amount of light transmitted, e.g. glare reduction
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: G02C 2202/16 Laminated or compound lenses
• CPC Class Codes: G02C 2202/18 Cellular lens surfaces
• CPC Class Codes: G02C 7/04 Contact lenses for the eyes disinfection or sterilisation of contact lenses A61L12/00
• CPC Class Codes: G02C 7/041 bifocal; multifocal
• CPC Class Codes: G02C 7/049 Contact lenses having special fitting or structural features achieved by special materials or material structures
• CPC Class Codes: G02C 7/083 Electrooptic lenses
• CPC Class Codes: G02C 7/101 having an electro-optical light valve electro-optical elements per se G02F
• CPC Class Codes: G02C 7/12 Polarisers
• CPC Class Codes: G02F 1/133753 with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle

Abstract

This invention discloses methods and apparatus for providing a variable optic insert into an ophthalmic lens. A liquid crystal layer may be used to provide a variable optic function and in some examples, an alignment layer for the liquid crystal layer may be patterned in a cycloidally dependent manner. The patterning may allow for a polarization dependent lens in some examples. An energy source is capable of powering the variable optic insert included within the ophthalmic lens. In some examples, an ophthalmic lens is cast-molded from a silicone hydrogel. The various ophthalmic lens entities may include electroactive liquid crystal layers to electrically control optical characteristics.

Claims

1. A contact lens device with a variable optic insert positioned within at least a portion of an optical zone of the contact lens device, wherein the variable optic insert comprises:

a curved first front surface and a curved first back surface wherein the first front surface and the first back surface are configured to form at least a first chamber;

a first layer of electrode material proximate to the curved first front surface;

a second layer of electrode material proximate to the curved first back surface;

a first layer containing liquid crystal material positioned within the first chamber, wherein 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, and wherein the first layer containing liquid crystal material varies its first index of refraction affecting a ray of light traversing the first layer containing liquid crystal material when an electric potential is applied across the first layer of electrode material and the second layer of electrode material;

a curved second front surface and a curved second back surface wherein the second front surface and the second back surface are configured to form at least a second chamber;

a third layer of electrode material proximate to the curved second front surface;

a fourth layer of electrode material proximate to the curved second back surface;

a second layer containing liquid crystal material positioned within the second chamber, wherein the second layer filters out a circular polarization component of incident light;

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

an electrical circuit comprising a processor, wherein the electrical circuit controls a flow of electrical energy from the energy source to one or more of the first, second, third or fourth electrode layers; and

wherein the variable optic insert alters a focal characteristic of the contact lens device.