Retroreflective sheeting for projector-based display system
US10444615B2 · kind B2 · utility
1Cited by
85References
30Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 29, 2018 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
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.