Loading patent…
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorsDaniel Darmes, Gilles Lefebvre, Sylvie Maze, Eric Freon, Francis Bell
Estimating the term…
A translucent synthetic material article such as an ophthalmic lens comprises a plurality of well-shaped cells, some of which have at least one upstanding projection on their bottom walls. The projection have a height between 1/5 and 1/1 the cell depth and are upwardly tapering and wedge-shaped. The plurality of cells are arranged in rows and columns to define a matrix. When the translucent article is illuminated, the well-shaped cells with upstanding projections display enhanced contrast compared with such cells without upstanding projections, thereby producing an identification marking or the like.
A method of marking a translucent synthetic material comprising the steps of (i) providing at least one well-shaped cell and (ii) forming on a bottom wall of said at least one cell at least one upstanding projection.
A translucent synthetic material article comprising at least one well-shaped cell, the at least one cell having a bottom wall, and at least one upstanding projection on said bottom wall.
Dependencies are inferred from the claim text.