Proximity sensing using structured light
US12361576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2022 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Dec 15, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/74
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Sensing apparatus includes a projector, which projects toward a target a pattern of spots extending over a predefined angular range about a projection axis. An imaging assembly includes an image sensor and objective optics, which form on the image sensor an image of the target along an imaging axis, which is offset transversely relative to the projection axis. A processor is configured to process signals output by the image sensor so as generate, while the target is within a first span of distances from the apparatus, a depth map of the target responsively to shifts of the spots in the image, and to estimate, while the target is within a second span of distances, nearer to the apparatus than the first span, a distance to the target from the apparatus by detecting in the image a part of the pattern located at an edge of the angular range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.