Selective tinting method

Patent metadata

Field	Value
Publication number	US-8999006-B2
Application number	US-201013502335-A
Country	US
Kind code	B2
Filing date	Oct 15, 2010
Priority date	Oct 21, 2009
Publication date	Apr 7, 2015
Grant date	Apr 7, 2015

Abstract

The invention relates to a selective dyeing method used for dyeing a substrate ( 10 ), selectively within a first exposed surface portion (S 1 ) of said substrate. For this purpose, the substrate consists of a material ( 2 ) that is impervious to a dye with the exception of the first portion of the exposed surface. In particular, the impervious material can form a layer which covers a base portion ( 3 ) of the substrate in a second portion (S 2 ) of the exposed surface. The substrate is heated such that the dye (C) penetrates a pervious material ( 1 ) which constitutes the first portion of the exposed surface. The method is particularly useful for eliminating light diffused by the walls of a multilayer structure which is supported by means of ocular glass.

First claim

The invention claimed is:

1. A selective tinting method comprising:
selectively tinting a substrate, the selectively tinting including:
providing the substrate with an exposed surface that includes a first surface portion of a first material and a second surface portion of a second material that is different from said first material;
providing a dye source configured to release dyes when said source is heated;
transferring dyes from said dye source onto said exposed surface of the substrate by heating the dye source in proximity to the exposed surface of the substrate;
causing the dyes transferred onto the first surface portion to penetrate into the first material by heating the substrate; and
rinsing the exposed surface of the substrate with a dye solvent, so as to eliminate the dyes remaining on said exposed surface,
wherein the second material prevents dyes, originating from the dye source and present on the second surface portion when starting to heat the substrate, from penetrating into said second material during heating said substrate, the dyes present on the second surface portion being eliminated while rinsing the exposed surface.

2. A method according to claim 1 , wherein the second material has a gelation or softening temperature higher than a gelation or softening temperature of the first material.

3. A method according to claim 1 , wherein the first material is an organic or mineral-organic hybrid material, and the second material is a mineral or mineral-organic hybrid material.

4. A method according to claim 3 , wherein the second material comprises silica, zinc oxide, tin-doped indium oxide, or a hybrid material incorporating silica, zinc oxide, or tin-doped indium oxide.

5. A method according to claim 1 , wherein the transferring includes releasing said dyes in by sublimation of said dyes, and said dyes are in gaseous form during their transfer between said dye source and the exposed surface of the substrate.

6. A method according to claim 1 , wherein the transferring includes transferring said dyes during a contact between said dye source and the exposed surface of the substrate, and wherein the dye source is removed between transferring the dyes and heating the substrate.

7. A method according to claim 1 , wherein the dye source comprises a portion of paper or polyvinyl alcohol, impregnated with the dyes.

8. A method according to claim 1 , wherein the substrate comprises:
a transparent base substrate having an upper surface;
a transparent layer of the second material, supported by the upper surface of the base substrate; and
a network of walls arranged on the transparent layer of the second material, on a side of said transparent layer opposite the base substrate, the walls extending perpendicularly to the upper surface of the base substrate,
the first surface portion of the exposed surface being formed by the walls, and the second surface portion of the exposed surface being formed by the transparent layer of the second material between the walls.

9. A method according to claim 8 , wherein the walls are at least partially of photoresist resin, and wherein heating the substrate includes heating the substrate for at least one hour at a temperature of between 110° and 150° C.

10. A method according to claim 8 , wherein the base substrate is of polyethylene terephthalate.

11. A method according to claim 8 , wherein the transparent layer of the second material has a thickness of between 50 and 1000 nm perpendicularly to the upper surface of the base substrate.

Assignees

• Archambeau Samuel
• Ballet Jérôme
• Cano Jean-Paul
• Perrot Stéphane
• Essilor Int

Inventors

• Archambeau Samuel
• Ballet Jérôme
• Cano Jean-Paul
• Perrot Stéphane

Classifications

• Y10T428/249994

  Composite having a component wherein a constituent is liquid or is contained within preformed walls [e.g., impregnant-filled, previously void containing component, etc.] · CPC title

• Y10T428/24174

  including sheet or component perpendicular to plane of web or sheet · CPC title

• Y10T428/24942

  including components having same physical characteristic in differing degree · CPC title

• G02B1/10

  Optical coatings produced by application to, or surface treatment of, optical elements (G02B1/08 takes precedence) · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title