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How Starlight Technology Works

Night vision devices gather existing ambient light (starlight, moonlight or infra-red light) through the front lens. This light, which is made up of photons goes into a photocathode tube that changes the photons to electrons. The electrons are then amplified to a much greater number through an electrical and chemical process. The electrons are then hurled against a phosphorus screen that changes the amplified electrons back into visible light that you see through the eyepiece. The image will now be a clear green-hued amplified re-creation of the scene you were observing.

FIRST, SECOND, THIRD AND FOURTH GENERATION

A Night Vision Device can be either a 1st, 2nd, 3rd or 4th generation unit. What this stands for is what type of light intensifier tube is used for that particular device The light intensifier tube is the heart and soul of an NVD.

2nd Generation

Primarily used by law enforcement or for professional applications. This is because the cost of a 2nd gen unit is approximately $500.00 to $1000.00 more then a 1st gen. The main difference between a 1st and a 2nd generation unit is the addition of a micro-channel plate, commonly referred to as a MCP. The MCP works as an electron amplifier and is placed directly behind the photocathode. The MCP consists of millions of short parallel glass tubes. When the electrons pass through these short tubes, thousands more electrons are released. This extra process allows 2nd generation units to amplify the light many more times then 1st generation giving you a brighter and sharper image.

3rd Generation

By adding a sensitive chemical, gallium arsenide to the photocathode a brighter and sharper image was achieved over 2nd generation. An ion barrier film was also added to increase tube life. Gen. 3 provides the user with good to excellent low light performance.

4th Generation / Gated Filmless tubes

4th generation / Gated Filmless technology represents the biggest technological breakthrough in image intensification of the past 10 years. By removing the ion barrier film and "Gating" the system Gen 4 demonstrates substantial increases in target detection range and resolution, particularly at extremely low light levels.
The use of filmless technology and auto-gated power supply in 4th generation image intensifiers result in:

Up to 100% improvement in photoresponse.
Superb performance in extremely low light level (better S/N and EBI)
At least triple high light level resolution (a minimum of 36 lp/mm compared to 12 lp/mm)

With significant improvement in contrast level and in performance under all light conditions, 4th generation represents the top of the line performance in the night vision market. Note: The term 4th generation is used/accepted among Night Vision manufactures to describe gated filmless tubes. However, this designation is widely debated and is currently referred to as Filmless & Gated image intensifiers by the US Military.

Gen 4 technology improves night operational effectiveness for military users of night vision goggles and other night vision devices. The filmless MCP provides a higher signal-to-noise ratio than Gen 3, resulting in better image quality (less scintillation) under low-light conditions. The gated power supply further improves image resolution under high light conditions, and the reduced halo minimizes interference from bright light sources. These improvements also substantially increase the detection range of the systems.

XD-4 Image Intensifiers

The XD-4 is the top grade of the DEP Image Intensifiers. With the introduction of the XD-4 technology a new European Standard for low light imaging was born providing unprecedented performance in Night Vision applications.

The XD-4 Image Intensifiers perform extremely well in all environmental conditions. Its wide spectral sensitivity range ensures that a perfect picture is obtained regardless of the user's environment (foliage, on water, snow, desert, rocky and barren land) or light conditions (down to heavily overcast starlight).
The XD-4 Image Intensifiers provide as well a superb image under very dynamic light conditions.
The basis for the unique performance of the XD-4 is the technology used by DEP. This has resulted in greatly improved performance parameters that are crucial for good observation, such as the Signal-to-Noise Ratio (SNR), the Modulation Transfer Function (MTF) and Resolution under all circumstances. Add to this the very long lifetime throughout its complete luminance dynamic range and you will be convinced of its unique performance.

The performance parameters of the XD-4 Image Intensifier are listed in the table below. Highlights of the XD-4 specification are the typical SNR of 24, the resolution of 64 lp/mm and over and - very important - the high MTF at low and intermediate spatial frequencies. The latter gives the image its sharpness and contrast.
It goes without saying that the XD-4 tubes can be supplied in every common mechanical construction including inverting and non-inverting fibre-optic output, which also means that users have the opportunity to upgrade the performance of existing Night Vision Equipment via a drop-in XD-4 Image Intensifier.

DEP Image Intensifiers with XR-5 Technology

As a result of sustained and continuing product development, DEP is proud to introduce the latest, innovative XR5 Image Intensifier with unprecedented performance for any environment and any circumstance.
The XR5 Image Intensifier, successor to the well-known and successful XD-4 Image Intensifier, reveals even more details of the night and offers an eXtended Range (XR) capability thanks to its new technology.

Furthermore, the XR5 Image Intensifier enables the user to see even more during a full 24-hour day/night operation. This is done by the use of a fully integrated Auto-Gating unit, which controls the image not only during day-night-day transitions but also during dynamic lighting conditions such as those experienced, for example, in night operations in urban areas. In practice, this means no blooming to hinder your mission but dependable imagery throughout. In addition, the halo is the smallest on the market.
The XR5 Image Intensifier from DEP represents the new European standard for Night Vision and is available in a variety of inverting and non-inverting 18 mm formats.

The new XR5 is your best choice to maintain your combat effectiveness under all circumstances.

Infra-Red Illuminators

All Starlight scopes need some light to amplify. This means that if you were in complete darkness you could not see. Due to this we have a built in infra-red illuminator (IRI) on all of our scopes. Basically what an IRI does is throw out a beam of infra-red light that is near invisible to the naked eye but your NVD can see it. This allows you to use your scope even in total darkness. The IRI works like a flashlight and the distance you can see with it will be limited. We do use the most powerful eye-safe illuminator on the market. This allows our IRI to extend out to 100 yards However, because of the power at a short distance the IRI may cover only 40-60% of the viewing area.

How Far You Can See

There are many different variables that can effect the distance that you can see with a Night Vision device. First, what are you trying to see? Are you looking for another boat on the water or are you looking for a rabbit in the woods? The larger the object the easier it is too see. Plus, are you trying to see details (what we call recognition range) or are you just trying to see if something is there or maybe you will just see movement but won't be able to 100% determine who or what it is. This is called detection range. Second. Another variable is lighting conditions. The more ambient light you have (starlight, moonlight, infrared light) the better and further you will be able to see You can always see further on a night where the moon and stars are out then if it is cloudy and overcast. We typically state that you can tell the difference between a male and a female or a dog and a deer at about 75 to 100 yards. However, if you were looking across an open field and there was a half moon out you could see a barn or a house 500 yards away.

Remember, that the purpose of an NVD is to see in the dark not necessarily a long ways like a binocular.

Black Spots on the Screen

As you look through a night vision device you may notice black spots on the screen. A NVD is similar to a television screen and attracts dust and dirt. Typically these spots can be cleaned. However, this may also be a spot in the tube itself. This is normal. Most tubes will have some spots in them. These black spots will not affect the performance or reliability of the night vision device.

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Night Storm-1
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The Night Storm is the latest in technology and the newest addition to the ATN line of night vision products. Strict standards and precision manufacturing have brought to you a rugged, yet...

List Price:: ~~$279.00~~
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Night Storm-2
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The NightStorm is the latest in technology and the newest addition to the ATN line of night vision products. Strict standards and precision manufacturing have brought to you a rugged, yet...

List Price:: ~~$1,495.00~~
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Night Storm-3A
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The NightStorm is the latest in technology and the newest addition to the ATN line of night vision products. Strict standards and precision manufacturing have brought to you a rugged, yet...

List Price:: ~~$3,095.00~~
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Mo4-1
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The MO-4 is so packed with features that it is unsurpassable by competitors in the same field. With high quality image intensifier tubes and fast lenses the MO-4 has very high brightness output....

List Price:: ~~$329.00~~
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Mo4-2
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The MO4-2 is so packed with features that it is unsurpassable by competitors in the same field. With high quality image intensifier tubes and fast lenses the MO-4 has very high brightness output....

List Price:: ~~$1,549.00~~
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Mo4-3A
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The MO4-3 is so packed with features that it is unsurpassable by competitors in the same field. With high quality image intensifier tubes and fast lenses the MO4-3 has very high brightness output....

List Price:: ~~$3,195.00~~
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Night Scout
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: If you want the best technologically advanced pair of Night Vision binoculars available, look no further.We present you with the ATN Night Scout, Smart binoculars. These binoculars come with a high...

List Price:: ~~$649.00~~
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Night Shadow-1
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The Night Shadow comes standard with our cutting edge Smart technology.This technology consists of a computerized proximity sensor, digital controls and a long-range infra-red illuminator. The...

List Price:: ~~$449.00~~
Our Price:: $419.00
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Night Shadow-2
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The Night Shadow comes standard with our cutting edge Smart technology.This technology consist of a computerized proximity sensor, digital controls and a long-range infra-red illuminator. The...

List Price:: ~~$1,795.00~~
Our Price:: $1,695.00
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Night Shadow-3A
by Atn

Category: Night Vision
Availability: In Stock
Brief Description: The Night Shadow comes standard with our cutting edge Smart technology.This technology consist of a computerized proximity sensor, digital controls and a long-range infra-red illuminator. The...

List Price:: ~~$3,295.00~~
Our Price:: $3,195.00
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