Retroreflective article
US7980710B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | May 25, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/124
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A retroreflective article including a retroreflective element layer having an array of a large number of total internal reflective cube corner retroreflective elements, an optical property-adjusting layer partially provided on the back side of the retroreflective element layer, and an air layer on the back side of the optical property-adjusting layer. The retroreflective article exhibits optical properties suited for an intended use, such as a reflector of traffic or commercial signs, such as traffic signs, regulating signs, informative signs, and construction signs, or visible, laser or infrared light reflective sensors, by the presence of the optical property-adjusting layer with an adjusted hue or an adjusted area ratio. The retroreflective article can easily be produced at low cost and high efficiency by utilizing an existing retroreflective article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.