Micro-optic device with double sided optical effect
US10780726B2 · kind B2 · utility
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2References
24Claims
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Key dates
| Filing date | Apr 13, 2017 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Apr 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A micro-optic device, including: a transparent substrate; first lens elements on a first side of the substrate that reveal first image elements on a second side of the substrate; and second lens elements on the second side of the substrate that reveal second image elements on the first side of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.