Digital Night Vision and Sensor Fusion can only be accomplished by ONE display...Data sharing, sensor-fused, Thermal Imaging, low SWAP. The AN/PSQ-20 from Exelis (now Elbit) was not very good to say the least but the display worked fine, Augmented Reality Overlay, able to reduce SWAP, Intevac Night-Port eMagin Color OLED...

Micro-displays and fusion

This has seen the development of small but rugged display systems that can deliver data and imagery in immediate proximity to the soldier’s eye, in much the same way as a Heads-Up Display (HUD) on a combat aircraft.

The availability of such micro-displays enabled the advent of the fused-sensor goggle, bringing together both I2 and IR images. For the US military, the AN/PSQ-20 Enhanced NVG (ENVG), as the fused goggle was known, entered service in April 2008. This ENVG optically overlaid an uncooled long-wave infrared (LWIR) image onto the visible image provided by an I2 tube. Initially it was ‘clunky’ but worked and, since then, Exelis has evolved the ENVG to reduce its SWaP, with the current configuration being the AN/PSQ-20A Spiral Enhanced NVG (SENVG), now also being produced by L-3 Warrior Systems as the AN/PSQ-20B model.

The Intevac Night Port digital goggle looks much like a ‘conventional’ binocular NVG with spectacles-compatible eyepieces and dioptre adjustment. However, with a back-illuminated CMOS architecture and a high definition OLED colour display, it has the capacity to import and export imagery and display data by symbology overlay on the image. A handful of prototype systems have been supplied to what the company describes as “US government laboratories”.

https://battle-updates.com/shrinking-the-sensors-recent-trends-in-night-vision-technology-by-peter-grant/