Laser warning receiver to identify the wavelength and angle of arrival of incident laser light
US7683310B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2008 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Jun 7, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4804
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser warning receiver is disclosed which has up to hundreds of individual optical channels each optically oriented to receive laser light from a different angle of arrival. Each optical channel has an optical wedge to define the angle of arrival, and a lens to focus the laser light onto a multi-wavelength photodetector for that channel. Each multi-wavelength photodetector has a number of semiconductor layers which are located in a multi-dielectric stack that concentrates the laser light into one of the semiconductor layers according to wavelength. An electrical signal from the multi-wavelength photodetector can be processed to determine both the angle of arrival and the wavelength of the laser light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.