Textured retro-reflective marker
US12078825B1 · kind B1 · utility
1Cited by
12References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2023 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Dec 22, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/66
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A marker comprising: a retro-reflective layer having a first retro-reflectance capability and a border defining a retro-reflective area of the retro-reflective layer. The retro-reflective layer includes a textured surface, a portion of the textured surface having a surface topology such that surface normal vectors positioned across the portion extend from the portion of the textured surface in different directions. A plurality of retro-reflective micro elements are distributed across the textured surface. A portion of the border provides a second retro-reflectance capability lower than the first retro-reflectance capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.