Learn About NV Use and Care

Using Night Vision

Night vision technology has significantly advanced, making it accessible and affordable for the general consumer. Whether for fishing, camping, or nature watching, night vision devices open up new possibilities for nighttime activities. The specific application will determine the type and quality of the night vision device needed.

Generation 1 Devices: These are the most common and economical night vision devices. They are suitable for basic tasks such as finding dropped items in the dark, managing fishing tackle at night, or casual nature observation. However, their range is limited, and detailed identification of birds or animals may only be possible at close distances. Quality varies significantly among Generation 1 devices, so it is essential to choose well-made units to avoid disappointment.

Generation 2 and 3 Devices: For more advanced nighttime observations, Generations 2 and 3 devices offer superior performance. These devices provide extended range, greater light amplification, sharper images, and reduced edge distortions, making it easier to find and identify wildlife in low-light conditions. Although more expensive, they are a worthwhile investment for serious night vision users.

Night vision devices open a hidden world of nocturnal activities, allowing users to see what has always been concealed by darkness. Like using binoculars for the first time, mastering night vision devices requires practice to quickly find and focus on objects.

In nature observation, many animals and birds are primarily nocturnal or allow closer approaches in the dark. For instance, ducks and water birds may permit closer observation at night using night vision, whereas they would quickly fly away if a light is turned on. The IR illuminator can highlight eye shine, making it easier to spot owls and other night creatures. Night vision devices are invaluable tools for exploring nocturnal wildlife, from forests to oceans, and camping to boating.

Controls and Adjustments

Modern night vision devices typically have three main controls: the on/off switch, the eyepiece focus, and the front lens focus. Some devices have separate switches for the main power and the IR illuminator, while others use a single switch that cycles through different modes. These switches control two indicator lights: a green LED for main power and a red LED for the IR illuminator. It is important to monitor these LEDs to avoid unnecessary battery drain from the IR illuminator.

Focusing: Focusing night vision devices is a two-step process. First, adjust the eyepiece focus in a lit environment without removing the protective lens cap. Once set, this focus should remain constant for a given user. The objective lens then needs to be adjusted to focus on different objects.

Aperture Ring: Some night vision devices feature an aperture ring, similar to a camera lens f-stop, to control the amount of light entering the device. This adjustment helps achieve a comfortably lighted view.

Extending Capabilities and Add-Ons

Accessories and add-ons for night vision devices include:

• AC Power Adapters: For extended use without battery drain.
• Demist Shields: Prevent condensation on the optics.
• Magnetic Compasses: Display compass readings directly on the night vision scene.
• Sacrificial Windows: Protect the objective lens from scratches.
• Auxiliary Lenses: Increase magnification.
• IR Beacons: Illuminate areas or define trails without revealing the viewer's position.
• Camera Adapters: Attach cameras or camcorders to record night vision images.
• Goggle Kits: Include head mounts, auxiliary lenses, and other accessories for versatile use.
• Head Mounts: Strap or clamp systems to keep goggles in place.
• IR Illuminators: Extend the range of built-in IR illuminators.

Other common accessories include cases, batteries, tripods, window mounts, and lens caps.

Night Vision Care and Handling

Night vision devices are electronic instruments and require careful handling. Many models are waterproof and designed for outdoor use, but those not rated for damp conditions should be protected from water and high humidity.

These devices are not affected by airport x-ray machines and are safe to pass through security checks. First-generation devices can be freely transported internationally, but second and third-generation devices are regulated by the State Department and require special permits for international travel.

Avoid exposing night vision devices to bright lights or using them in daylight, as this can damage the units. Most modern devices are equipped with "cut off" circuitry to protect against bright light exposure. Second and third-generation devices also feature automatic image brightness control.

Conclusions

• Night vision devices enable a wide range of nighttime activities at an affordable cost.
• Using night vision devices differs from traditional cameras and binoculars and requires practice to master.
• Various accessories can extend the capabilities and protect night vision devices.
• Night vision devices are electronic instruments that should be handled with care, similar to a high-quality camera, rather than a pair of binoculars.