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Friday, February 11, 2011
Thursday, February 3, 2011
Night Vision Equipment
Night Vision equipment has gone so far through 4 main generations...
Gen 1 night vision
currently the most popular type of night vision in the world. Utilizing the basic principles described earlier, a 1st generation unit will amplify the existing light several thousand times letting you clearly see in the dark. These units provide a bright and sharp image at a low cost, which is perfect, whether you are boating, observing wildlife, or providing security for your home. You may notice the following when you are looking through a 1st Gen. unit.
- A slight high-pitched whine when the unit is on.
- The image you see may be slightly blurry around the edges. This is known as Geometric Distortion.
- When you turn a 1st Gen. unit off it may glow green for some time.
- These are inherent characteristics of a 1st Gen. unit and are normal.
Here are some examples of Gen 1 Night Vision Equipment:
Gen 1 Night Vision Goggles - Viper
ATN Night Vision Scout - Binocular
Gen 2 night vision
is 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.
Gen 3 night vision
By adding a sensitive chemical, gallium arsenide to the photocathode a brighter and sharper image has been achieved over 2nd generation units. An ion barrier film was also added to increase tube life. 3rd Gen. provides the user with good to excellent low light performance.
Gen 4 night vision
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 film less technology and auto-gated power supply in 4th generation image intensifiers result in:
- Up to 100% improvement in photo response.
- 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).
Gen 5 night vision
Here is my idea...
why not come up with a contact lens that give you the power to see at night?
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