Electro-active Lens with Resistive Arcs

• US 20200133081A1
• Filed: 12/18/2019
• Published: 04/30/2020
• Est. Priority Date: 09/18/2017
• Status: Active Grant

• Current Assignee: e-vision Smart Optics, Inc. (New Smart Optics, Inc.)
• Original Assignee: e-vision Smart Optics, Inc. (New Smart Optics, Inc.)
• Inventors: Milton, Harry
• Granted Patent: US 11,199,748 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/29 for the control of the position or the direction of light beams, i.e. deflection
• CPC Class Codes: G02F 1/294 Variable focal length devices

Abstract

Certain exemplary embodiments can provide a system, machine, device, manufacture, circuit, composition of matter, and/or user interface comprising and/or related to a tunable electro-optic lens device comprising a first substrate comprising a first electrode layer that comprises a first plurality of ring electrodes that form a first resistive divider network, and a second substrate comprising a second electrode layer.

Claims

1. A tunable electro-optic lens device comprising:

a first transparent substrate comprising a transparent conductive first electrode layer operatively connected thereto, the first electrode layer being patterned and comprising a first plurality of substantially concentric ring electrodes that form a first resistive divider network;

a second transparent substrate comprising a transparent conductive second electrode layer operatively connected thereto; and

an electro-active liquid crystal material layer located between the first transparent substrate and the second transparent substrate;

wherein;

a first ring electrode from the first plurality of ring electrodes is electrically connected to a substantially adjacent ring electrode from the first plurality of ring electrodes by a substantially co-planar first resistive arc that electrically spans a gap overlap zone defined by a spiralesque insulating gap that substantially separates the first ring electrode from the adjacent ring electrode;

the spiralesque insulating gap extends more than one revolution, and less than two revolutions, substantially around a rotational axis of the at least one ring electrode to define the gap overlap zone;

the gap overlap zone defines a gap overlap zone arc length and a gap overlap zone width;

the gap overlap zone arc length defines a length of the first resistive arc and the gap overlap zone width defines a width of the first resistive arc;

the first resistive arc defines a resistive path through the gap overlap zone;

a first sub-plurality of continuous ring electrodes from the first plurality of continuous ring electrodes is connected to a first input connection, the first input connection terminating an input line;

a resistance created by the first resistive arc is proportional to the length of the first resistive arc divided by the width of the first resistive arc;

the electro-optic lens device is tunable from a first optical power to a second optical power when a first voltage is applied to the first input connection;

the first electrode layer comprises a plurality of sets of ring electrodes, wherein;

each set comprises a corresponding plurality of ring electrodes;

a dedicated input connection is provided for each set

each set is adapted to be individually controlled; and

a dedicated resistive arc is provided between each adjacent pair of ring electrodes in each set;

at least one ring electrode on the second transparent substrate completely covers in a planar direction at least two co-planar ring electrodes of the first transparent substrate;

the first electrode layer is adapted to create an index of refraction gradient in the electro-active liquid crystal material layer;

the first electrode layer and the second electrode layer are adapted to electrically cooperate to generate a radially varying electric field across the electro-active liquid crystal material layer;

the spiralesque insulating gap extends more than two revolutions substantially around the rotational axis of the at least one ring electrode; and

a width of the first resistive arc is between approximately 0.1 microns and approximately 10 microns.