Laser projection module, depth camera and electronic device
US10890779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2019 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Feb 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B15/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laser projection module, a depth camera and an electronic device are provided. The laser projection module includes a laser emitter, a collimation element, a diffraction element and a detection component. The laser emitter is configured to emit laser. The collimation element is configured to collimate the laser. The diffraction element is configured to diffract the laser collimated by the collimation element to define a laser pattern. The detection component is disposed to at least one of the collimation element and the diffraction element, and configured to output an electrical signal. The processor is coupled to the detection component, and configured to receive the electrical signal and detect whether the at least one of the collimation element and the diffraction element are abnormal according to the electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.