Patent ID: 11940596
Assignee: CARL ZEISS VISION INTERNATIONAL GMBH
Field: Optics (Instruments)
Classification: CPC B  G | IPC B  G

Claim 5:
6. A method for manufacturing a spectacle lens containing a spectacle lens substrate and at least one antibacterial and/or antiviral coating, the method comprising the following steps:
providing a spectacle lens substrate having an uncoated or precoated front surface and an uncoated or precoated back surface;
depositing under vacuum on at least one of the uncoated or precoated surfaces at least one clean coat component resulting at least one clean coat layer or at least one anti-fog component resulting in at least one anti-fog coating;
dispersing at least one biocidal component in at least one solvent and/or dissolving at least one biocidal component in at least one solvent, the dispersed at least one biocidal component and the dissolved at least one biocidal component being different from each other;
modifying the at least one clean coat layer with the at least one biocidal component by diffusion of the at least one biocidal component into the at least one clean coat layer, the at least one biocidal component diffusing either completely or partially into the at least one clean coat layer, resulting in the at least one antibacterial and/or antiviral coating based on at least one modified clean coat layer; or
modifying the at least one anti-fog coating with the at least one biocidal component by diffusion of the at least one biocidal component into the at least one anti-fog coating, the at least one biocidal component diffusing either completely or partially into the at least one anti-fog coating, resulting in the at least one antibacterial and/or antiviral coating based on at least one modified anti-fog coating,
wherein the at least one clean coat layer or the at least one anti-fog coating is modified after the depositing step.