Patent ID: 11940594
Assignee: APPLE INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 14:
15. An electronic device comprising:
a housing at least partially defining an interior volume of the electronic device;
a display positioned at least partially within the interior volume; and
a cover assembly positioned over the display and coupled to the housing, the cover assembly including:
a glass cover member defining a textured region comprising a set of surface features having:
a root mean square height that is greater than zero and less than or equal to 1.5 microns; and
an average pitch that is greater than the root mean square height and less than 20 microns; and

an anti-reflection coating conforming to the set of surface features, comprising an inorganic dielectric material, and configured to have a refractive index gradient, the cover assembly having a reflectance that is less than 3% and neutral across a visible spectrum of light.