A Comprehensive Overview Of Night Vision Devices!
This article will take a comprehensive look at the different generations of night vision devices and how they differ.

A Comprehensive Overview Of Night Vision Devices!

2 min read
This article will take a comprehensive look at the different generations of night vision devices and how they differ.

Night vision devices have come a long way since their inception during World War II. Today, various night vision devices are available on the market, each with its benefits and drawbacks.

This article will take a comprehensive look at the different generations of night vision devices and how they differ.

First-Generation Night Vision Devices (FG / NVG / NVG1)

The first-generation night vision devices were developed in the late 1940s and were in widespread use during the Vietnam War. FG night vision devices are based on an image intensifier tube that amplifies ambient light to enable the user to see in low-light conditions.

While FG night vision devices are significantly cheaper than later generations, they also have several drawbacks. For example, FG night vision devices are susceptible to blooming when a bright light source results in a brief loss of image quality. In addition, FG night vision devices can be easily detected by people looking for them due to their characteristic green glow.

Second-Generation Night Vision Devices (SG / NVG2)

The second generation of night vision devices was developed in the 1970s and addressed many issues associated with first-generation devices. SG night vision device tubes use a photocathode to convert photons into electrons, amplified by a di-node and projected onto a phosphor screen that emits visible light.

This design helps reduce or eliminate blooming and increases the device's sensitivity, making it possible to see in even darker conditions. SG night vision devices have an increased lifespan compared to first-generation devices, thanks to their gated power supplies.

Third-Generation Night Vision Devices (TG / NVG3)

The third generation of night vision devices was introduced in the 1990s and represented a significant departure from previous generations. TG night vision device tubes use an ion barrier film that helps to prevent damage from exposure to bright light sources such as flares or car headlights.

In addition, TG night vision devices incorporate microchannel plates made from gallium arsenide that amplify the electron current generated by the photocathode. This design helps to improve image quality further while also reducing distortion around the edges of the field of view.

Conclusion

Today's shooters and hunters have a wide range of night vision device options, each with its benefits and drawbacks. First-generation night vision devices are the least expensive but susceptible to blooming and have a limited lifespan.

Second-generation night vision devices address some of the first predecessors' issues but are more expensive.

Finally, third-generation night vision devices offer the best image quality but are also pricier than other options. Understanding the differences between each generation of night vision devices is essential to choose the option that best meets your needs.

Thank you for reading!

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