Patent ID: 11940593
Assignee: CORNING INCORPORATED
Field: Optics (Instruments)
Classification: CPC G  C | IPC C  G

Claim 0:
1. A display article, comprising:
a substrate comprising a thickness and a primary surface; and
the primary surface having defined thereon a diffractive surface region,
wherein the diffractive surface region comprises a plurality of structural features that comprises a plurality of different heights in a multimodal distribution,
wherein the multimodal distribution comprises a plurality of modes, with each mode being distinguished by a decrease in area fraction of at least 20% from a peak surface height value of the mode, and
wherein the substrate exhibits a sparkle of less than 4%, as measured by pixel power deviation (PPD140) at an incident angle of 0° from normal, a distinctness of image (DOI) of lessthan 80% at an incident angle of 20° from normal, and a transmittance haze of less than 20% from an incident angle of 0° from normal.