The choice of image tube is very important in night vision products, but what is the difference between Gen2+ and Gen 3?you must know these information about night vision image intensifier tubes before choose your night vision devices.
Gen-2+ IIT
Newer technology, used in Generation-2+ night vision devices allows 2.5 times better light amplification than Gen 2 with better resolution and higher Signal-to-Noise ratio. All of these improvements ensure a better quality of the image with less noise and a brighter picture. Typical basic spec.: Gain-25,000x; SNR < 25; Resolution 52-64 lp/mm; life expectancy 10,000 Hrs.
Photonis
Night Vision devices built with Photonis tubes stand apart from the standard generation-based classification. Although some sources consider Photonis tubes as Gen-2+ devices, Photonis developed its technology in a different way, creating unfilmed light intensifying tubes with extremely clear images and Automatic Brightness Control. In fact, every parameter of a typical Photonis tube is higher than the same number for a typical Gen 2+ device. And the resolution of Photonis tubes is higher than or equal to the typical resolution of Gen-3 and Gen-3+ devices. Typical basic spec.: Gain-up to 50,000x; SNR < 30; Resolution 64-78 lp/mm; life expectancy 12,000 – 14,000 Hrs.
MIL Spec grade Gen-3 Thin-Filmed
This technology is a significant step up from Gen 2+. It is often used by militaries. Gen 3 devices handle low-light conditions better than Gen 2+, Gen 3 devices handle low-light conditions better than Gen 2+. They provide cleaner and brighter images being better in every department including increased tube life expectancy. Typical basic spec.: Gain- up to 70,000x; SNR < 35; Resolution 64-72 lp/mm; life expectancy up to15,000 Hrs.
OPTIONAL FEATURES:
Auto-Gating
This is often the most confused optional feature of NV devices. The myths say that Autogating can protect NV devices from bright light, including daylight. It is not so. Autogating is intended for a different purpose. It is a feature designed to automatically limit the amount of glow coming from light sources. Autogated devices are essential for operating in areas where occasional or regular light pollution may occur, such as military combat, a law enforcement operation in a city, or hunting near a lit road or a lit property. An NV device without Autogating will not allow seeing what is going on behind a streetlight, since the amplified glow of the streetlight is too bright to allow a human eye to distinguish a darker background scene. An Autogated device is a game changer. Most Photonis, Gen-3 and Gen-3+ tubes are Autogated.
With all this said, NV devices which are not geared with Autogating are very suitable for operating in areas with no light pollution, such as hunting in remote locations. In fact, if a hunting scene does not have any source of light pollution, a device with no Autogating may slightly outperform a device of the same class with Autogating on board. An Autogated device may try to soften the glow from the brightest element of the scene - a reflection from a hiding game’s eyes. This reflection would be more distinct if a non-Autogated device is used.
Manual Gain Control aka External Gain Control (EGAC)
This feature allows operators to manually adjust the light amplification of a night vision device. Turning the gain down from the maximum level, will dim the image to the operator’s comfort level in a bright condition like a full moon or snow.
Automatic Brightness Control (ABC)
This feature automatically reduces the image intensifier’s brightness under dynamic lighting conditions. It may extend a tube life by limiting bright light picks amplification within reasonable limits. Automatic Brightness Control also protects the user from temporary blindness caused by an excessively bright image produced by a night vision device when unexpected light pollution of the operating scene happens - the image gets brighter for a split second and then dims to a pre-set comfortable level.
Fortunately, our all night vision products definitely can meet your demands with Auto-gating and manual gain, our factory have different night vision devices for your choice, such as PVS7 night vision goggles, PVS31 night vision binoculars, PVS14 night vision monocular and grand panoramic binoculars......Please click on the contact information below to contact me for more product details!!!
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