Textured retro-reflective marker
US12313867B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2024 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | May 10, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/66
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus comprising a retro-reflective marker and a device configured to receive the retro-reflective marker in a socket located on the top surface of the device. The retro-reflective marker comprises a retro-reflective layer having a first retro-reflectance capability. The retro-reflective layer comprises 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, and a plurality of retro-reflective micro elements distributed across the textured surface. The retro-reflective marker further comprises a border defining a retro-reflective area of the retro-reflective layer, where 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.