Optical switch devices
AssigneeWavefront Technology, Inc.
InventorsChristopher Chapman Rich, Joel Mikael Petersen, Roger Winston Phillips, John Michael Tamkin
Life of this patent
Estimating the term…
Abstract
A security device includes an array of lenses and a plurality of first and second segments disposed under the array of lenses. At a first viewing angle, the array of lenses presents a first image for viewing without presenting the second image for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses presents for viewing the second image without presenting the first image for viewing. At least one first or second segment can include one or more microstructures or one or more nanostructures configured to produce one or more colors for the first or second image.
Claims17
An optical device comprising:
- an array of lenses;
- and
- a plurality of first and second segments disposed under the array of lenses, the first segments corresponding to portions of a first icon, and the second segments corresponding to portions of a second icon,
- wherein at a first viewing angle, the array of lenses presents for viewing the first icon without presenting the second icon for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses presents for viewing the second icon without presenting the first icon for viewing,
- wherein individual ones of the first segments comprise a first surface texture defining the first icon,
- wherein individual ones of the second segments comprise a second surface texture defining the second icon, the second surface texture different from the first surface texture.
Dependencies are inferred from the claim text.