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Using a Night Vision Device

By:James Hunt

Itís difficult to see in the dark. Unless thereís some light peeking in through the window or from under a door, our vision is compromised. If we wait a little while, our night vision kicks in, allowing us to see somewhat better. Itís not enough that we can read in the dark, but it should be enough to keep us from stumbling into furniture or tripping over the carpet. Sometimes though, our human night vision isnít enough and we need a little help.

Thatís where technology kicks in. Thanks to science we can use night vision to do all sorts of things. With the proper equipment we can hunt, take pictures or even fight wars in the dark. We can also perform surveillance and search and rescue missions.

Hereís how it works: Your night vision product will take existing light and amplify it through an objective lens, which then focuses on an image intensifier. A photocathode located inside the intensifier converts the photon energy into electrons. The electrons in turn strike a phosphor screen creating a viewable image. In reality it looks like youíre watching television on a green screen.

Atmospheric conditions can affect night vision. For instance, if itís cloudy, foggy, or overcast, night vision can be compromised. The clearer the night, the farther one will be able to see with night vision technology. It should also be noted that night vision shouldnít be magnified, as light is lost during the magnification process making it more difficult to see.

Night vision devices include:
- Cameras
- Binoculars
- Scopes for firearms
- Goggles

If you think that using a night vision device on a frequent basis might be harmful, you couldnít be more wrong. Night vision products are no more harmful than a television or movie screen. It doesnít emit radiation or other harmful rays and thereís no reason for it to cause blindness.

Article Source: http://www.redsofts.com/articles/

James Hunt has spent 15 years as a professional writer and researcher covering stories that cover a whole spectrum of interest.
Read more at www.night-vision-central.info

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