Nanostructured transparent article with both hydrophobic and antifog properties and methods for making it
AssigneesNikon Corporation, Essilor International
InventorsSandrine Couderc, Grégory Tortissier
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Abstract
A transparent article having a face provided with a nanostructure, wherein a top part of the nanostructure has hydrophobic properties and a remaining part of the nanostructure confers antifog properties to said face of said transparent article.
Claims18
A transparent article having a face provided with a nanostructure, wherein a top part of the nanostructure has hydrophobic properties and a remaining part of the nanostructure confers antifog properties to said face of said transparent article, wherein the nanostructure comprises nanopillars or nanocavities, a top part of the nanopillars or nanocavities having hydrophobic properties, and:
- the top part of the nanopillars only comprises the top of the nanopillars and an adjacent portion extending below the top of the nanopillars, said adjacent portion being an annular portion extending up from 1 nm to h/5 in which h is the height of the pillar(s) expressed in nm, below the top,
- the top part of the nanocavities only comprises the top of the nanocavities and an adjacent portion extending below the top of the nanocavities, said adjacent portion being a ring-like band of the cavity extending from 1 nm to h/5 in which h is the depth of the cavity expressed in nm, below the top,
- and the remaining part of the nanopillars or nanocavities confers antifog properties to said face of said transparent article.
Dependencies are inferred from the claim text.