Hard multi-coat on optical article

Patent metadata

Field	Value
Publication number	US-10705260-B2
Application number	US-201616062780-A
Country	US
Kind code	B2
Filing date	Dec 16, 2016
Priority date	Dec 17, 2015
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

An optical device and method for manufacturing the optical device is provided. The optical device comprises an optical article having a substrate, a primer layer, and a hard multi-coat (HMC). The HMC comprises at least one layer. At least one of the layers, the substrate, and the HMC comprises at least one carbon allotrope that is absorbed by diffusion. The method of manufacturing involves combining and organic solvent and deionized water to form a solution, mixing into the solution at least one carbon allotrope, applying sonication to the solution an optical article comprising at least one of a substrate, a primer layer on the substrate, and a HMC, immersing and then withdrawing the optical article from the solution, withdrawing the optical article from the solution, and evaporating excess liquid from the solution.

First claim

What is claimed is:

1. An optical device comprising: an optical article having a substrate, a primer layer on the substrate, and a hard multi-coat (HMC), wherein the HMC comprises at least one layer, and wherein at least one of the layers, the substrate, and the HMC comprises graphene nanoparticles, each nanoparticle being about 0.25 μm, absorbed by diffusion, and wherein the graphene nanoparticles are present as a uniform coating on a layer surface.

2. The optical device of claim 1 , wherein the optical article is polarized.

3. A method of manufacturing an optical device of claim 1 comprising: combining an organic solvent and deionized water to form a solution; mixing into the solution the graphene nanoparticles, each nanoparticle being about 0.25 μm; applying sonication to the solution; immersing into the solution the optical article comprising at least one of a substrate, a primer layer on the substrate, and a hard multi-coat (HMC); withdrawing the optical article from the solution; and evaporating excess liquid from the optical article.

4. The method of claim 3 , wherein the step of withdrawing further comprises withdrawing the optical article from the solution at a constant speed.

5. The method of claim 3 , wherein the method further comprises: during the step of withdrawing, diffusing the graphene nanoparticles into at least one of the substrate, the primer layer, and the HMC.

6. The method of claim 3 , wherein the method further comprises during the step of withdrawing, coating at least one of an outer surface of at least one of the substrate, the primer layer, and the HMC with at least a first layer comprising graphene nanoparticles.

7. The method of claim 6 , wherein the method further comprises coating the at least a first layer comprising graphene with a primer layer.

8. The method of claim 7 , wherein the method further comprises: immersing the optical article into the solution such that the optical article is positioned at a substantially 90 degree angle to a horizontal surface of the solution, and withdrawing the optical article from the solution such that at least a second layer comprising graphene nanoparticles is diffused into at least one of the substrate, the primer layer, and the HMC in a substantially perpendicular position relative to the first layer comprising graphene nanoparticles to form a polarized article.

Assignees

• Essilor Int

Inventors

• Eagerton William

Classifications

• B05D7/56

  Three layers or more · CPC title

• G02B1/14 Primary

  Protective coatings, e.g. hard coatings · CPC title

• B05D1/18

  performed by dipping · CPC title

• G02C1/00

  Assemblies of lenses with bridges or browbars · CPC title

• B05D7/24

  for applying particular liquids or other fluent materials · CPC title