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US 6,562,466 B2Granted
Process for transferring a coating onto a surface of a lens blank
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorsPeiqi Jiang, Fadi O. Adileh, Yassin Yusef Turshani
Life of this patent
Estimating the term…
Abstract
The present invention relates to an improved process or method for transferring a coating onto at least one surface of a lens blank which can be implemented in a short period of time without any risk of deformation of the lens blank.
Claims33
A process for transferring a coating onto at least one geometrically defined surface of a lens blank which comprises:
- providing a lens blank having at least one geometrically defined surface;
- providing a support having an internal surface bearing a coating and an external surface;
- depositing on said geometrically defined surface of said lens blank or said coating a premeasured amount of a curable glue;
- moving relatively to each other the lens blank and the support to either bring the coating into contact with the room temperature or UV curable glue or bring the glue into contact with the geometrically defined surface of the lens blank;
- applying a sufficient pressure onto the external surface of the support so that the thickness of a final glue layer after curing is less than 100 micrometers;
- curing the glue;
- and
- withdrawing the support to recover the lens blank with the coating adhered onto the geometrically defined surface thereof.
5 more elements
A process for transferring coatings onto geometrically defined surfaces of a lens blank which comprises:
- providing a lens blank having two geometrically defined surfaces;
- providing two separate mold part having each an internal and an external surface;
- forming a coating on each of the internal surfaces of said mold parts;
- depositing on the geometrically defined surfaces of the lens blank or on the coatings a premeasured amount of curable glue;
- closing the mold parts onto the lens blank;
- applying a pressure on the external surface of at least one mold part to spread the glue amounts so that the thickness of final cured glue layers is less than 100 μm;
- curing the glue;
- and
- withdrawing the mold parts to recover the lens blank with coatings adhered onto each of its geometrically defined surfaces.
6 more elements
Dependencies are inferred from the claim text.