NIGHT VISION COMPATIBILITY
Some Aimpoint® sights are compatible with NVDs (night vision devices). This means that the sights can be used during the daytime, but also in darkness or low light conditions with NVDs.
The performance of Aimpoint® sights is optimized for use with all generations of night vision devices, but is especially suited for 3rd generation night vision technology.
Aimpoint's unique band-pass coating on the front lens reflects select frequencies of red light at almost 100% efficiency. This allows the highest possible dot brightness while transmitting nearly 100% of light in the infrared and near-infrared part of the spectrum.
This results in the clearest, brightest image possible when used with a 3rd generation NVD.
HOW IT WORKS
To maintain zero, the NVD must be used behind the sight. It can be mounted on a helmet or on the rail behind the sight.
When you turn the dot intensity switch, the first four to seven settings (depending on the sight model) are intended for use with NVDs. This means that the dot will only be visible through an NVD.
If you continue turning the switch past the nighttime settings, the dot becomes visible to the naked eye, and the sight can be used in daylight.
For a visual illustration, watch the animation below.