Essilor International (compagnie Generale D'optique)

Sylvie Maze

Bruno Fermigier

Daniel Darmes

Matthieu Koscher

Gilles Lefebvre

Francois Guilhaumon

Francis Bell

Eric Freon

A disk enabling modification of the power of an optical component consists of a Fresnel lens. The disk is initially formed with a general rounded shape which corresponds to the shape of the optical component. In this way, the disk does not lose its shape or does not lose it very much when it is applied against the component. It does not cause image distortion or optical aberration when an object is observed through the component provided with the disk. Such a disk is particularly adapted to obtain correction of ametropia or to a solar mask initially lacking optical power.

Patch for modification of the power of an optical component

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.

Method for making an object made of translucent synthetic material, in particular an ophthalmic lens, marked object and corresponding reader

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Charenton-le-Pont, France

Sylvie Maze