Automatic power reduction using a pre-scanned virtual protective housing
US11397317B2 · kind B2 · utility
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16Claims
0Family size
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Key dates
| Filing date | Sep 23, 2019 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Jun 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/521
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanning laser projection system includes a virtual protective housing circuit to automatically reduce power levels of visible laser light pulses when necessary to render the laser projection system eye-safe. IR laser light pulses are scanned out in front of visible laser light pulses in a field of view, and emitted power of visible laser light pulses is modulated based on attributes of reflections of the IR laser light pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.