Process for applying a coating onto a surface of a lens substrate

A process for applying a coated or uncoated film onto at least one surface of a lens substrate comprising:

• (a) providing a lens substrate having main surfaces;
• (b) providing a coated or uncoated film;
• (c) forming, on either a surface of the coated or uncoated film or one of the said surfaces of the lens substrate, a layer of a dry latex;
• (d) depositing at least one drop of a water base activating liquid on either the said main surface of the lens substrate, a surface of the coated or uncoated film or an exposed surface of the dry latex layer;
• (e) moving relatively to each other the coated or uncoated film and the lens substrate and applying a sufficient force to the coated or uncoated film to spread the water base activating liquid and form a thin pellicule of the water base activating liquid between the dry latex layer and either the lens substrate or the coated or uncoated film;
• (f) heating the thin pellicule of water base activating liquid and the dry latex layer;
• (g) releasing the applied force;
• and
• (h) recovering the lens substrate with the coated or uncoated film adhered to the lens substrate main surface.