The Swirl I and Swirl II are two SWIR (Short Wave Infrared) cameras using an InGaAs QVGA sensor having the light sensitivity from 950nm to 1700nm. The Cameras have a Gigabit Ethernet or a Camera Link Interface.
What is the advantage of having a SWIR (Short Wave Infrared) camera with an interface of Gigabit Ethernet or Camera Link? Sensing in the (SWIR) range (wavelengths from 0.9 to 1.7 microns) has only recently been made practical by the development of Indium Gallium Arsenide (InGaAs) sensors.
First, a basic fact: light in the SWIR band is not visible to the human eye. The visible spectrum extends from wavelengths of 0.4 microns (blue, nearly ultraviolet to the eye) to 0.7 microns (deep red). Wavelengths longer than visible wavelengths can only be seen by dedicated sensors, such as InGaAs. Although light in the shortwave infrared region is not visible to the eye, this light interacts with objects in a similar manner as visible wavelength. That is, SWIR light is reflective light; it bounces off of objects much like visible light. As a result of its reflective nature, SWIR light has shadows and contrast in its imagery. Images from an InGaAs camera are comparable to visible images in resolution and detail; however, SWIR images are not in color. This makes objects easily recognizable and yields one of the tactical advantages of the SWIR, namely, object or individual identification.
The Swirl I and the Swirl II are two cameras that can function in the SWIR environment. They have a two-step Peltier Cooling system for the InGaAs sensor. A cooler sensor improves the imaging. This will allow you to use advanced detection systems such as lidar which works on the principle of radar but uses the light from a laser.
- Wavelength bandwidth: 950nm to 1700 nm
- VGA Resolution (320 x 256 pixels), 20-micron pixel size
- Exposure control: 1u s to 10 ms
- Video Output big: 8/10/12/14/bit
- Pixel defect correction function
- Internal Cooling function
- Shading correction function
- Lookup table function
- Sorting Recyclables
- Glass Inspection
- Solar Inspection
- Weapons Guiding