Anti-Static, Anti-Reflective Coating

Patent metadata

Field	Value
Publication number	US-2016266281-A1
Application number	US-201615065752-A
Country	US
Kind code	A1
Filing date	Mar 9, 2016
Priority date	Mar 9, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

An anti-reflective, anti-static coating, optical articles employing such a coating, and methods of forming the same. The coating formed of alternating layers of low, mid, and/or high refractive index oxide materials and one or more layers of electrically conductive, substantially non-oxide forms of the same materials employed to form the alternating layers of low, mid, and/or high refractive index oxide materials.

First claim

1 . An anti-reflective, anti-static optical coating comprising:
a plurality of alternating layers of a transparent oxide form of a first material and a transparent oxide form of a second material; and an electrically conductive layer formed of either the first material or the second material.

2 . The optical coating of claim 1 wherein the oxide form of the first material has a high refractive index.

3 . The optical coating of claim 1 wherein the oxide form of the second material has a low refractive index.

4 . The optical coating of claim 1 wherein the oxide form of the first material is zirconium dioxide.

5 . The optical coating of claim 1 wherein the oxide form of the second material is silicon dioxide.

6 . The optical coating of claim 1 wherein the first material is a transition metal.

7 . The optical coating of claim 1 wherein the first material is zirconium.

8 . The optical coating of claim 1 further comprising an adhesive layer formed of either the first material or the second material.

9 . The optical coating of claim 1 wherein the electrically conductive layer has a thickness in the range of approximately 1 to 10 nanometers.

10 . The optical coating of claim 1 wherein the optical coating comprises at least five layers.

11 . The optical coating of claim 1 wherein the optical coating has a transmittance of approximately 95 percent or greater.

12 . An anti-reflective, anti-static optical lens comprising:
an optical substrate; a plurality of layers of an oxide form of a first material applied over a surface of the optical substrate; a plurality of layers of an oxide form of a second material applied over the surface of the optical substrate, at least one layer of the plurality of layers of the oxide form of the second material interposed between two layers of the plurality of layers of the oxide form of the first material; and an electrically conductive layer of the first material applied over the surface of the optical substrate.

13 . The optical lens of claim 12 wherein the optical substrate is a cast resin.

14 . The optical lens of claim 12 wherein the first material is a transition metal or a metalloid.

15 . A method for forming an anti-reflective, anti-static optical coating comprising:
forming a plurality of alternating layers of an oxide form of a first material and an oxide form of a second material; and forming an electrically conductive layer of the first material on a surface of one of the plurality of alternating layers.

16 . The method for forming an anti-reflective, anti-static optical coating of claim 15 further comprising the step of applying an adhesive layer formed of either the first material or the second material directly on a surface of an optical substrate.

17 . The method for forming an anti-reflective, anti-static optical coating of claim 15 further comprising the step of forming at least a total of five layers.

18 . The method for forming an anti-reflective, anti-static optical coating of claim 17 wherein the adhesive layer is electrically conductive.

19 . The method for forming an anti-reflective, anti-static optical coating of claim 15 wherein the step of forming a plurality of alternating layers of an oxide form of the first material and an oxide form of the second material comprises forming high, mid, or low refractive index layers.

20 . The method for forming an anti-reflective, anti-static optical coating of claim 15 wherein the step of forming an electrically conductive layer of the first material on a surface of one of the plurality of alternating layers comprises forming a zirconium layer.

21 . The method for forming an anti-reflective, anti-static optical coating of claim 15 wherein the step of forming an electrically conductive layer of the first material on a surface of one of the plurality of alternating layers comprises forming a layer having a thickness in the range of approximately 1 to 10 nanometers.

Assignees

• Vision Ease Lp

Inventors

• Marshall Michael
• Brown Jeff

Classifications

• G02B1/116 Primary

  including electrically conducting layers · CPC title

• G02B1/16

  having an anti-static effect, e.g. electrically conducting coatings · CPC title

• G02C2202/16

  Laminated or compound lenses · CPC title

• G02C7/022

  Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence) · CPC title