Selective tinting method

摘要

The invention relates to a selective dyeing method used for dyeing a substrate (10), selectively within a first exposed surface portion (S1) 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 (S2) 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.

主权项

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; andrinsing 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.