The primary difference between Gen2+ and Gen3 night vision lies in their approach to image intensification technology:
GEN2+ uses a multi-akali photocathode while Gen3 uses Gallium Arsenide (GaAs).
Photonis 4G/ECHO and some of the XD4/XR5 series tubes utilize a Hybrid Multi-Alkali (HyMa) photocathode with a diffraction grating coating, to enhance sensitivity and expand the spectral range. It can be identified by a characteristic rainbow sheen on the input window surface when viewed at an angle.

Gen3 tubes on the other hand are known for their strong performance in extremely low-light conditions, primarily due to their high photocathode sensitivity and gain.
Modern Gen2+ tubes shine in dynamic or high-light scenarios due to advanced auto-gating and a broader spectral range. This can results in a higher maintained resolution and more stable MTF values in urban environments.

One technology is not per se better than the other. GEN2+ Tubes nowadays can get very close or even outperform GEN3, even in very dark environments. It always depends on the tube types within the generation and the individual specifications of the tubes being compared.

Many users start with a monocular unit to get familiar with night vision before deciding whether to invest in a binocular or panoramic system. It is a practical way to gain experience, and the mono can later serve as a backup device or even be used as the basis for a future binocular build. There is the option to bridge it with a second mono or a thermal device. It is compact, lightweight and versatile.

Binocular systems provide true depth perception, which makes movement and navigation feel more natural.

To summarize:
Monoculars are a flexible and cost-effective way to get started, while binoculars (and panos) offer a more immersive experience with better depth perception (and field of view.)

No. We launched in early 2026 and our company is currently registered under the EU VAT SME scheme, so we don’t need to charge VAT to our customers. This means VAT is already accounted for on our end and is not shown separately on our invoices.

So for all orders within the European Union, the prices shown are final - there are no additional taxes or hidden charges.

Analog = True Zero Latency (Real-Time)
This is the most important factor when it comes to movement.

Analog: Photons hit a photocathode and are converted into electrons, which then strike a phosphor screen. This process occurs at the speed of light- there is no intermediate processing involved.

Analog (image intensification) relies on a tube that amplifies the available light. Incoming low light is converted into electrons, multiplied, and then transformed back into a visible image on a phosphor screen. Because the signal is continuous rather than frame-based, motion appears smooth and natural.

Digital: A sensor first captures an image, which is then processed and displayed on a screen. Even a small delay (latency) of just a few milliseconds can cause spatial disorientation and motion discomfort when walking or driving. In fast-moving situations, analog remains the only option that provides a true 1:1 perception of reality.

While modern tubes are designed to operate reliably in challenging conditions and feature advanced protection like autogating, they are still sensitive instruments. Avoid prolonged or static exposure to bright light sources (lamps, lasers, streetlights etc.), as this will damage the tube at some point.

More on this in the next section

When storing your device, remember the golden rule to prevent bad surprises:

Keep it dark and dry.

Don't just leave it on a shelf: Even with the lens caps on, it’s not ideal for the long run. Prolonged exposure to bright light can actually burn or wear down the sensitive photocathode over time - even if the power is off.

Use a proper case: Instead of a shelf, tuck it away in a quality, sealed case. If you live somewhere humid, toss in a silica gel packet. It’s a cheap way to prevent nasty stuff like internal fogging or fungus growth on the lenses.

It's best not to leave them in.
While it’s usually fine for short-term use, we strongly recommend removing the batteries if you're storing the device for more than a few days.
Battery leakage or corrosion can cause permanent, costly damage to the internal electronics.
To keep your unit in top shape, store it dark and 'cold' and stick to quality batteries to minimize the risk of leakage.

In technical terms, purging a night vision device refers to flushing the assembled unit with dry nitrogen or argon gas.

During a professional build, the process starts with a leak test, using a vacuum pump to create a pressure differential inside the housing to ensure it 'holds a purge' and is properly sealed against water ingress.

The purpose of flooding the housing with dry nitrogen or argon is to prevent internal condensation while protecting the electronics, lenses, and tubes from moisture and corrosion.
Condensation can occur when the device is exposed to rapid temperature changes, such as moving quickly from freezing outdoor temperatures into a heated room during winter.
It is needless to say that an internally fogged-up device can be critical in certain situations...

For professional use, it is highly recommended to have it leak-tested and purged on a regular basis, as no device will hold a purge forever.

All devices with dedicated ports are leak-tested and freshly purged before we send them out.

Scientific studies on this topic yield varying results. While some find no real performance gap, others show that a White Phosphor image can offer better contrast and cleaner shades of gray, which may lead to faster target identification.

Specs over Color
From our experience, one isn’t automatically better than the other. It really comes down to the specific tube, its specs and cosmetics. A great example is a comparison by our partner Opfor Night Solutions. In their article 'Chinese Gen 3: A Generation Behind - For Now' they showed that even a White Phosphor tube can produce a hazy, washed-out image if the underlying tech just isn't there.

Personal Preference
White Phosphor has become the modern standard, as it is often perceived as more natural, with many users reporting a clearer sense of depth and reduced eye strain. Some simply prefer the classic green look or prioritize better-specced tubes at a more attractive price point compared to their White Phosphor counterparts.

Spots:
Dark spots are a natural part of the manufacturing process. They can be caused by tiny particles inside the intensifier or fiber optic. Every tube has a specific allowance for these spots, and they do not affect the device's performance. Because they are a permanent byproduct of how the tubes are built, they cannot be cleaned or 'black boxed' away. It’s normal to want a perfectly clear tube, but a spot-free image is rarely realistic. Even the most high tier tubes are permitted multiple dark spots. If they don't show clear spots, there will inevitably be pepper to some extent (spots too small to be officially classified as dark spots).

Blem (Blemishes):
A blem differs from a factory spot in that it is caused by the user - typically through burn-ins in the form of dots or streaks, or due to debris on top of the fiber optic. Unlike factory spots, some blems can be fixed depending on their severity. If the tube has a light burn, you can try black boxing it (running the device in a completely dark box (like a peli case) for several battery cycles). Debris can usually be removed during professional servicing. To avoid blems, always handle your gear with care. If you do accidentally burn a tube, don’t turn it off - cap the lenses, put it in a dark box, and let it run until the battery dies. Repeat this to see if the burn fades. Note that heavy burns are often permanent. For lack of a better term, think of this as permanent scar tissue within the intensifier.

Emission Points:
A steady or fluctuating pinpoint of bright light in the image area that persists even when all light is blocked from the objective lens. This is caused by a short in the microchannel plate. It is not considered a problem if it disappears or fades under brighter conditions. However, if it remains bright under all lighting conditions, it is a defect and the system needs to be checked.
Emission points can be confused with bright spots, which are small, non-uniform bright areas that go away when the light is blocked.

The four specs you’ll hear about most often are FOM (Figure of Merit), Resolution (lp/mm), SNR (Signal-to-Noise Ratio) and Gain (Luminous / Brightness Gain)

FOM (Figure of Merit)
FOM is a calculated value: Resolution multiplied by the Signal-to-Noise Ratio (FOM = Res x SNR). It’s the go-to metric for judging a tube's performance. While it doesn’t tell the whole story, it’s a reliable indicator of how well a tube performs.

Resolution (lp/mm – Line Pairs per Millimeter)
This defines how well a tube can distinguish between fine details. Resolution varies between the center of the tube and the edges, but specsheets always list the center resolution. For modern tubes, 64 lp/mm is the standard, though anything higher is becoming more common.

SNR (Signal-to-Noise Ratio)
This measures how well the tube performs in near-total darkness by comparing the actual light signal to the electronic background noise (scintillation). The higher the SNR, the cleaner and crisper the image stays - meaning less 'fuzz' or graininess in pitch-black conditions. It is widely seen as the most vital spec of an Image Intensifier Tube.

Gain (Luminous / Brightness Gain)
This measures how many times the tube amplifies incoming light. While higher numbers are generally better, a brighter tube isn’t necessarily superior if it lacks the SNR to back it up.

EBI (Equivalent Background Illumination)
This measures the amount of light the tube emits even when there is absolutely no ambient light entering the tube. A lower value is better because it keeps the background from becoming too bright, which would reduce the image contrast. EBI increases with temperature, so a low value helps maintain a clear picture in warm environments.

Halo
This measures the size of the bright ring that forms around concentrated light sources, like streetlights or headlights. A smaller halo value is better because it stops the glare from spreading, which prevents it from blooming and hiding details in urban areas.

Auto-Gating, Manual Gain, Autogain, ABC and BSP are all brightness control and protection functions in Image Intensifier Tubes. While they sound similar, each handles a specific aspect of light management and tube protection.

Auto-Gating:
Function: Switches the tube's power supply on and off thousands of times per second.
Benefit: Protects the tube from permanent damage caused by sudden bright lights (e.g., flashlights, muzzle flashes, or car headlights).
Effect: Keeps the image sharp and prevents washout in dynamic lighting conditions.

Manual (Variable) Gain:
Function: Allows manual adjustment of the tube's brightness via a physical knob on the device.
Benefit: Maximum control over the image.
Effect: The unit can be dimmed to reduce scintillation (image noise) and prevent the unaided eye in monocular use from losing its natural night vision.

Autogain / Fixed Gain:
Function: Automatically regulates the tube's amplification based on ambient light levels without user input. Just like a manual gain tube, it features a factory-set maximum amplification ceiling but automatically pushes the image to its full performance in low-light environments. When hitting brighter areas, the internal ABC (Automatic Brightness Control) seamlessly dims the screen to protect your eyes and the tube.
Benefit: Hands-free convenience.
Effect: It boosts the signal in deep shadows and lowers it in brighter areas to maintain a steady, viewable picture.

ABC – Automatic Brightness Control:
Function: Automatically reduces the voltage to the microchannel plate (MCP) when the tube senses too much light.
Benefit: A built-in safety feature that protects the tube from burning out during prolonged exposure to light.
Effect: It keeps the image brightness within safe limits, capping the maximum brightness to protect both the tube and your eyes. For example, when moving from a dark alley onto a lit street, the image will momentarily flash bright and then immediately dim down to a constant, comfortable level.
Note: Virtually every modern image intensifier tube features Automatic Brightness Control (ABC) as a standard, built-in protective mechanism.

BSP – Bright-Source Protection:
Function: Automatically reduces the voltage to the photocathode (the front sensor of the tube) when exposed to extreme, localized light.
Benefit: An essential safety feature that prevents the tube from suffering immediate, permanent physical damage or burning out.
Effect: It aggressively cuts down the signal from harsh light sources (like car headlights or flashlights), which temporarily lowers image sharpness and contrast to save the tube's lifespan.
Note: Like ABC, basically all modern image intensifier tubes (Gen2+ and Gen3) are equipped with this feature.

Collimation is the process of aligning the optical axes. It is essential because if the axes are misaligned, the brain struggles to merge the images, often leading to 'double vision,' significant eye strain, and headaches. Proper collimation ensures a comfortable and seamless viewing experience.
Check this video for a detailed explanation -> click here

Export to non-EU countries is possible upon request for the following destinations:
Argentina, Australia, Canada, Iceland, Japan, New Zealand, Norway, South Korea, Switzerland, Turkey, the United Kingdom, and the United States.

Shipping to non-EU country requires an export permit and a signed End-User Certificate (EUC), which can be found via this link -> click here
Please note that sales involving Photonis 4G technology always require a signed EUC, regardless of the delivery destination.

After you place your order, we will reach out to you directly to send the EUC form and guide you through the process.
Once we submit the paperwork, it usually takes between 2 and 6 weeks for the export permit to get approved.

If you have any questions about the export process or the paperwork beforehand, feel free to contact us anytime.

We cannot provide you official legal advice here, but you will definitely want to check the local laws in both your home country and your destination before traveling with night vision equipment.