Essilor International (compagnie Generale D'optique)

Compagnie Europeenne De Composants Electroniques

Essilor International (compagnie General D'optique)

Frédéric Chaput

Jean-Pierre Boilot

John Biteau

Herbert Mosse

Richard Muisener

Jean-Paul Cano

Gilles Hochstetter

Claudine Biver

Jérôme Douce

Fabien Berit-Debat

Noémie Lesartre

Khalid Lahlil

Jacques Peretti

Georges Lampel

Nathalie Landraud

Viatcheslav Safarov

Andreas F Meyer

Toby B Meyer

A method for preparing a colloidal solution of non-aggregated zirconia particles, comprising the following steps:

Method for preparing a colloidal zirconia solution

Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics.

Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics

Methods of coating at least a portion of a curved surface of a lens with a polarizing liquid. One method includes providing a lens having a curved surface and a lens axis; and rotating the lens about a rotation axis such that a polarizing liquid flows over at least a portion of the curved surface; the rotation axis being offset from the lens axis. Other methods are included. Apparatuses include ophthalmic lenses having polarized coatings formed according to any of the disclosed methods.

Methods for coating lenses

An ophthalmic lens comprises a transparent substrate and electro-optical means integrated with the substrate to perform an optical function in response to an electrical stimulus. The ophthalmic lens further comprises at least one photovoltaic cell integrated with the substrate to power the electro-optical means in response to an incident light, and optionally also a control circuit for controlling the electrical voltage. The photovoltaic cell may be incorporated in an opaque element occupying a small fraction of the area of the lens. Alternatively, the photovoltaic cell may be transparent and may cover at least a portion of the area of the lens.

Ophthalmic lens with electro-optical function

The invention generally concerns a method involving emitting polarization light waves through an aperture with a dimension of maximum size lower than or equal to 100 nm, wherein the aperture is circumferentially bound by an opaque area that prevents the light waves from being propagated outside the aperture during use, and wherein the emitted polarization light waves (1) contact a material layer comprising a photosensitive compound whose surface is located at a distance lower than 100 nm from said aperture, and (2) induce a topographic modification of the material layer. In this manner, a stable structure is printed in relief in the material layer without requiring any additional development step. The invention is applicable, in certain embodiments, to ophthalmic optics.

Method for printing a near field photoinduced stable structure, and optical fibre tip for implementing same

The method consists in hydrolysing an initial volume Vse of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that where x H0 and x Si represent the number of moles of H0 and Si present, respectively, the concentration of the hydrolysate up to a volume substantially equal to the initial volume Vsi, leaving the concentrated hydrolysate until segregation into an aqueous phase and an organo-silicon phase, and recovery of the organo-silicon phase. A product can be obtained which comprises an organo-silicon sol comprising silicon species T, T, and T, wherein the molar fraction of species Tis equal or greater than 50%, comprising a condensation rate equal to or greater than 0.65, and further defined as lacking water, as determined by analyzing a sample of said organo-silicon sol byH NMR and observing the absence of peak corresponding to water.

Method for preparing an organo-silicon sol and materials obtained from such a sol

The disclosure concerns the fabrication, by chemical process, of a ceramic material belonging to the system:

Method for the fabrication of a ceramic material by hybrid chemical

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Massy, France

Frédéric Chaput