Patent ID: 11861966
Assignee: WAVEFRONT TECHNOLOGY, INC.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 15:
16. An optical device configured to provide authenticity verification on an item for security, the device comprising:
an array of lenses;
a plurality of first and second segments disposed under the array of lenses, the first segments corresponding to portions of an icon and a background; and
a transparent region disposed over information on the item,
wherein the transparent region comprises a material having a refractive index of about 1.8 to about 2.75,
wherein at a first viewing angle, the array of lenses presents the icon for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses does not present the icon for viewing, and
wherein for the first segments,
transparent features define the icon, and non-transparent features define the background, or
transparent features define the background, and non-transparent features define the icon.