OPTICAL SWITCH DEVICES
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United States of America Patent
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Issued Date -
Mar 14, 2024
app pub date -
Mar 31, 2023
filing date -
Apr 22, 2016
priority date (Note) -
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status (Latency Note)
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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.
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