Optical surveillance systems and methods
US9103723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2012 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Feb 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/183
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods presented herein provide for optical surveillance using modulated lasers, or other forms of light, and optical detection. In one embodiment, an optical surveillance system includes a light source, such as a laser or light emitting diode, and a signal generator operable to modulate the light source. The system also includes a detector operable to detect the modulated light source and a processor communicatively coupled to the detector to distinguish the modulated light source from other detected light based on the modulating waveform of the modulated light source. The processor is also operable to determine a presence of an object between the laser and the detector based on an obscuration of the laser pulses on the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.