Photoluminescent markings with functional overlayers
US8247761B1 · kind B1 · utility
217Cited by
5References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2011 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Oct 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2019/06225
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A photoluminescent marking that includes a photoluminescent layer and at least one functional overlayer is disclosed. The photoluminescent layer comprises at least one type of photoluminescent material. The at least one functional overlayer is adapted to selectively filter wavelengths of radiation to enhance the daylight observability of a final emission signature of the marking or to prevent the observability with the naked eye of a printed message on the marking. Also methods of making and using the inventive photoluminescent marking are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.