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US 12,124,003 B2Granted
Method for producing optical article with anti-reflective surface, and optical article with anti-reflective surface
AssigneeGlint Photonics, Inc.
InventorsPeter Kozodoy, John Lloyd
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Abstract
Methods for forming optical articles with antireflective nanostructured (ARN) surfaces. An aluminum layer is deposited or otherwise applied to the cavity of an injection mold tool. Sequential chemical treatments such as anodization and etching steps form an ARN mold texture on the interior surface of the cavity. The ARN mold texture is a negative of a desired surface texture of the article. During injection molding, the desired ARN surface is thereby produced in the optical article.
Claims19
A method to produce an optical article with a motheye antireflective nanostructured (ARN) surface comprising:
- providing a mold having a cavity defining a shape for the optical article, the cavity having a surface layer formed of aluminum;
- imparting an ARN-mold surface texture to the aluminum layer via a series of sequential chemical treatments involving anodization and etching of the aluminum layer to thereby produce a surface morphology comprising an array of tapered pits;
- producing the optical article having an ARN surface by further steps of
- injecting a transparent optical resin into the mold to fill the cavity, wherein the optical resin is chosen from a group consisting of including polymethyl methacrylate, polycarbonate, cyclic olefins, and polysiloxane;
- cooling the mold;
- and
- removing the formed optical article from the mold.
4 more elements
Dependencies are inferred from the claim text.