Retroreflecting article including retarder
US11300716B2 · kind B2 · utility
3Cited by
11References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2017 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Aug 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/208
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Retroreflecting articles are described. In particular, retroreflecting articles including a quarter wave retarder and a retroreflecting layer are described. The retarder is rotationally invariant and the retroreflecting layer is non-depolarizing. Such articles may be useful for sensor-detectable signs, labels, and garments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.