Process for replacing an initial outermost coating layer of...

G - Physics – 02 – B

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G02B 1/04 (2006.01) C08J 7/18 (2006.01) G02B 1/12 (2006.01)

Patent

CA 2529321

The invention concerns a process for replacing an initial outermost coating layer of a coated optical lens with a layer of a new final coating having surface properties different from those of said initial outermost coating which comprises: (a) providing a coated optical lens having an initial outermost coating layer having a surface contact angle with water of at least 65~; (b) subjecting the initial outermost coating layer to a treatment with activated chemical species at about atmospheric pressure, and for less than one minute, in order there is obtained a treated surface having a contact angle with water of 10~ or less; and (c) depositing on said treated surface a layer of a final coating having surface properties different from those of said initial outermost coating.

La présente invention concerne un processus de remplacement d'une couche de revêtement initial de surface de lentille optique revêtue par le dépôt sur celle-ci d'une couche de nouveau revêtement final possédant des propriétés de surface différentes de celles du revêtement de surface initial, qui consiste : (a) à prendre une lentille optique revêtue possédant une couche de revêtement de surface initiale possédant un angle de contact de surface avec l'eau d'au moins 65 degrés, (b) à soumettre la couche de revêtement de surface initiale à un traitement avec des espèces chimiques activées aux environs de la pression atmosphérique et, pendant moins d'une minute, de façon à obtenir une surface traitée possédant un angle de contact avec l'eau de dix degrés au maximum et, (c) à déposer sur cette surface traitée une couche de revêtement final possédant des propriétés de surface différente de celle du revêtement de surface initiale.

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