Animated optical security feature
US11221448B2 · kind B2 · utility
9Cited by
45References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2020 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Feb 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/27
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device includes an array of lenses and a plurality of segments disposed under the array of lenses. The plurality of segments corresponds to a plurality of images. Upon tilting the device at different viewing angle, the array of lenses presents images sequentially. In some examples, individual ones of the segments can comprise specular reflecting, transparent, diffusely reflecting, and/or diffusely transmissive features. In some examples, individual ones of the segments can comprise transparent and non-transparent regions. Some examples can incorporate more than one region producing an optical effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.