Method for vacuum deposit on a curved substrate

Details Method for vacuum deposit on a curved substrate Method for vacuum deposit on a curved substrate

C - Chemistry, Metallurgy

23

C

C23C 14/04 (2006.01)

Patent

CA 2341608

The invention concerns a method which consists in a process known per se in producing, on the curved substrate (10) to be treated, a film of material derived from a specific material source (13). The invention is characterised in that it consists in inserting, between the curved substrate (10) and the material source (13), a mask (19) relative to the curved substrate (10), preferably selecting as mask (19), a mask comprising a ring-shaped part (20). The invention is particularly useful for providing lenses with antiglare treatment.

De manière connue en soi, il s'agit de provoquer le dépôt, sur le substrat courbé (l0) à traiter, d'une couche de matériau en provenance d'une source de matériau (13) donnée. Suivant l'invention, on interpose, entre le substrat courbé (10) et la source de matériau (13), un cache (19) fixe par rapport au substrat courbé (10), en choisissant, préférentiellement, pour cache (19), un cache comportant une partie annulaire (20). Application, notamment, au traitement antireflet des verres de lunettes.

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