Baanto's ShadowSense™ NVIS Compliant Touchscreen Solution
Night Vision Imaging Systems (NVIS) are a range of devices that enhance what we can see in low light conditions. Essentially, they allow us to see in the dark.
Using an NVIS device, you can see objects, people and animals in total darkness as far away as up to 300 metres, (1000 ft) something that would be impossible with the naked eye. Night Vision cameras allow you to take photographs or videos of things that you would otherwise not even see. NVIS devices are extensively used by the armed forces for night operations, but they are also used by other organizations, such as law enforcement and search and rescue.
NVIS devices offer unique challenges, both in their design and their operation. To understand some of the challenges, and how to overcome them, it helps to know something about how the devices work.
There are currently two commonly used technologies used for NVIS equipment, although the older of the two is slowly being phased out. This older (traditional?) technology uses optoelectronic image enhancement. An image intensifier is used and works by sensing the small amount of infrared (IR) light being emitted by, or reflecting off, objects. Using a complex lensing system and a special electronic vacuum tube, light is then amplified and presented to a display as an image of the object. In this case, the image is typically green and monochrome.
Most NVIS systems made today use a more recent digital technology that captures the low levels of available light using a digital sensor. In this case, the light captured is converted into a digital signal using (typically) a CMOS device not unlike the camera in a phone, but which is much more sensitive to low levels of light. The signal created in then digitally magnified and enhanced many times. The resultant signal can then be sent to a display for viewing. Unlike devices based on image intensifiers, the output of a digital NVIS device can be provided to displays outside of the device itself, even being sent wirelessly.
The use of digital technology has brought about major changes for both military and civilian use of NVIS devices. Not only are digital systems smaller and lighter, but they are also much more versatile. Not only can digital NVIS devices be viewed directly, but their signal can also be connected to an external viewing screen, transmitted remotely, or stored on USB on SD storage devices. Perhaps equally as important, the images produced can now be full colour, and can be HD resolution or higher. These types of image-enhancing night vision systems are now being extensively used in areas such as wildlife research and photography, in addition to military applications.
However, these improvements in NVIS brings with it new challenges. The older systems based on image intensifiers would “bloom” and overload if large amounts of IR flooded the lens, or if light was shone directly at them. The newer systems are capable of better dampening some of these situations, but when used in an active combat situation such as, say, the cockpit of a combat plane during night operations, every effort must be made to prevent spurious IR emissions from other devices, which could blind the NVIS devices being used.
Baanto's ShadowSense NVIS Compatible Touchscreen
Baanto’s ShadowSense NVIS compatible touchscreen monitors have been designed and developed to overcome the challenges inherent with the use of modern NVIS devices.
The video viewed through a NIVIS camera shows two ShadowSense™ 27” ruggedized touchscreen displays on the desk in the foreground. One of them is a standard COTS device, the other is MIL-STD-3001 NVIS compliant. In the background you can see two large monitors, they are reporting respectively the activity from the standard COTS device and the NVIS compliant device.
You will observe the touch activity on each of the military touch displays as it occurs. The difference, though, as you will see, is that the NVIS camera is recording a bloom from the COTS device, whilst the NVIS compatible device is completely dark.
The Baanto’s ShadowSense NVIS compliant ruggedized touchscreen display, despite being an evolution of the patented ShadowSense COTS products, has been designed from the ground up to meet the exacting requirements of MIL-STD-3001. The design can further be refined to be built into a product meeting the precise specifications of military or ruggedized customers, including meeting the many additional MIL-STD codes typically seen in such environments.