Systems and methods for structured light projector operational safety
US11333895B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2019 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Mar 11, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0172
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosed system may include (1) a diffractive optical element (DOE) stack including one or more DOEs, where the DOE stack generates, in response to incoming light received at a first side of the DOE stack, structured light from a second side of the DOE stack opposite the first side, (2) a primary light source that emits the incoming light toward the first side of the DOE stack, and (3) at least one photodetector that detects light emitted from an edge of each of at least one of the DOEs of the DOE stack, where the edge is located between the first side and the second side of the DOE stack. Various other methods and systems are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.