Retroreflective sheeting for projector-based display system
US10866499B2 · kind B2 · utility
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86References
29Claims
0Family size
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Key dates
| Filing date | Sep 4, 2019 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Sep 4, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided herein is a retroreflective article comprising a retroreflective film and a plurality of isosceles triangular pyramid prisms embossed on the back surface of the retroreflective film. The prisms are configured such that the article reflects an incident light beam into two reflected light beams that are offset from and on opposite sides of the incident light beam. The two reflected light beams can provide two viewing zones located at different positions relative to the incident light beam source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.