Method and apparatus for producing a marking on an ophthalmic lens having a low surface energy
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorsThierry Souel, Edward de Rojas
Life of this patent
Estimating the term…
Abstract
An apparatus and method for producing a relatively high surface energizing on an ophthalmic lens by, applying a mask defining a reverse image of a desired marking to the surface of the ophthalmic lens to be marked, using a surface energizing source to provide a discharge to cause fogging to render a visible marking on the lens. The surface energizing source can be a corona discharge source.
Claims19
Apparatus for producing a relatively high surface energy marking on a surface of an ophthalmic lens having low energy surface, comprising a surface energizing source providing a discharge, means for applying a mask on a surface of an ophthalmic lens to be marked, the mask defining a reverse image of a desired marking, means for positioning the surface of the lens to be marked facing the surface energizing source with the mask interposed between the surface energizing source and the surface of the lens to be marked, whereby the energizing discharge is directed toward the low surface energy of the surface to be marked to increase the surface energy and render the resulting marking visible by fogging.
Method for producing a high surface energy marking on a surface of an ophthalmic lens having a low surface energy, comprising the steps of providing a surface energizing source, applying a mask to the surface of the ophthalmic lens to be marked defining a reverse image of the desired marking and positioning the ophthalmic lens facing the surface energizing source with the mask interposed between the ophthalmic lens and the surface energizing source, and effecting surface energization sufficient to increase the surface energy so that the resulting marking is visible by fogging the lens.
Dependencies are inferred from the claim text.