Multipath light test device for TOF module, depth error measuring method and system
US11598875B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2020 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Apr 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/521
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multipath light test device for a time of flight (TOF) module includes: a light-splitting plate configured to split light emitted from the TOF module; a first reflector plate connected to the light-splitting plate and forming a first angle with the light-splitting plate; and a second reflector plate disposed on one side opposite to the first reflector plate and forming a second angle with the first reflector plate; one part of the emitted light from the TOF module is returned to the TOF module along a first optical path after being reflected by the light-splitting plate with a first reflectivity; and the other part of the emitted light from the TOF module is transmitted through the light-splitting plate and incident to the first reflector plate and then returned to the TOF module along a second optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.