In the vast and ever-evolving field of defence technology, the capability to operate seamlessly under the cover of darkness is not just an advantage—it’s a necessity. Night Vision Imaging Systems (NVIS) and Night Vision Goggles (NVG) represent the pinnacle of nocturnal operational technology, allowing military and emergency service personnel to conduct missions in low-light conditions effectively. However, the integration of display technology with NVIS/NVG poses unique challenges, necessitating displays that are meticulously engineered to be compliant without compromising the user’s ability to navigate at night. This article looks into the background of NVIS-compliant displays.
Beacons of Innovation
Beyond its traditional bastions in aviation and marine environments, NVIS is also marking its territory in civilian realms, such as hunting and home security, demonstrating its versatile prowess. Night-vision capabilities are becoming indispensable tools in nocturnal surveillance, search and rescue missions, and covert operations. NVIS, thus, stands as a pivotal ally in ensuring safety and Relec’s NVIS compliant TFT displays are designed to navigate this delicate balance, ensuring compatibility with NVIS and NVG standards through advanced engineering and adherence to MIL-STD-3009.
Compliance with MIL-STD-3009
MIL-STD-3009 sets forth stringent guidelines for displays used in conjunction with night vision technology. One such requirement is the precise coordinates certain colours must fall within according to CIE 1967 Chromaticity, such as white falling under u’= 0.190 & v’ = 0.490, with an acceptable radius r = 0.04. Moreover, the standard mandates a brightness level of 0.343 cd/m2, optimising visibility for the user without compromising stealth or safety.
Engineering Solutions for NVIS Compatibility
Achieving NVIS compatibility within these strict parameters can be accomplished through two primary methods:

Filtering the LED Backlight
This approach involves placing a filter over the LED backlight of the display to modify the emitted light spectrum, ensuring it falls within the acceptable range for NVIS/NVG use.

Dual Backlight System
An alternative solution is the implementation of a dual backlight system. This system includes one backlight for standard operation, and another specially designed for NVIS conditions, with the white coordinate precisely set to meet MIL-STD-3009 requirements.
Both methods require meticulous design and engineering to ensure that the final product not only meets the required standards but also provides the functionality and reliability expected in defence applications.
Specialised Applications in Defence
The necessity for NVIS-compliant displays is uniquely tied to defence applications, where operations often occur under the veil of night. The ability to navigate, communicate, and operate with full visual capability in low-light conditions without compromising position or safety is a critical component of modern military operations. Our displays are not a mere enhancement; they are an essential element of the operational toolkit, enabling missions that would otherwise be impossible in the absence of daylight.
Our Commitment to NVIS-Compatible Technology
Our range of products, from component-level TFT displays to fully ruggedized monitors and panel PCs, are designed with the challenges of defence operations in mind. Each product is engineered to meet the rigorous standards of MIL-STD-3009, ensuring that they contribute to the user’s night vision capabilities rather than detracting from them. This commitment extends beyond mere compliance; it is about providing a competitive edge in the most demanding conditions.

9.7″ XGA USB-C Display

9″ WSVGA USB-C Display

8″ XGA USB-C Display

7″ PCAP Rugged Series Touch Panel

7″ Open Frame Monitor

5″ Open Frame Monitor

4” Square IPS TFT LCD Display

27 PCAP Rugged Series Touch Panel

23.8” FHD IPS TFT LCD Display

23.8 PCAP Rugged Series Touch Panel

23.6 PCAP Rugged Series Touch Panel

21.5” FHD IPS TFT LCD Display

21.5 PCAP Rugged Series Touch Panel

19.0 PCAP Rugged Series Touch Panel

18.5 PCAP Rugged Series Touch Panel

17.0 PCAP Rugged Series Touch Panel

15.6″ USB-C Monitor

15.6 PCAP Rugged Series Touch Panel

15.0 PCAP Rugged Series Touch Panel

12.1″ Open Frame Monitor
The Path Forward
As defence technology continues to advance, the integration of night vision compatibility into display systems remains a critical area of focus. Our dedication to innovation and excellence ensures that our products not only meet the current standards but also anticipate the needs of future developments in night vision technology. By prioritizing the safety, and effectiveness of the end-users, we are contributing to a future where night operations are conducted with unprecedented clarity and confidence.
In conclusion, the significance of NVIS-compliant displays in defence applications cannot be overstated. Through advanced engineering and a deep understanding of the operational requirements of personnel, we are proud to offer products that stand meet the needs of users on low light level applications. As we look to the future, our commitment to supporting the heroes who operate in the shadows remains unwavering, ensuring that they are equipped with the technology needed to face the challenges of the night.

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Displays on a Mission For Design Excellence
Whether designed with TFT or PCAP Technology, displays for Defence Applications need to be able to operate in some of the harshest environments, says Mathew Rehm from Display Specialist, Relec Electronics.
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