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Night Binocular Technology - Which Kinds Of Night Vision Products Are Available

Night vision technology has made its way from the defense forces into the mainstream over the last few years. It has several uses in different outside pursuits The technology has moved on over the years to be ready to deal with lower ambient light levels.

Night binoculars work by directing the incoming particles of light, or photons, onto a photoelectric device. This produces electrons that are passed through a photomultiplier before striking a phosphor screen which becomes illuminated. This produces an image, visible to the human eye but of low quality.

Second generation devices use a micro channel plate to produce much larger electron streams for better image quality. They do come in at a higher price point. Better quality phosphor lenses are utilized for military applications but are beyond the scope of the domestic market. These units rely on employing the light that is available.

Passive Starlight devices use very large objective lenses to capture as much of the available visible light as possible. This is then concentrated onto a small area to produce a viewable image. When I speak of visible light, I am referring to light in the region of the spectrum that the human eye is able to process. Obviously, all light is itself invisible.

Active Starlight binoculars use integral electronics to amplify the available light to produce a clearer image. The drawback is that they require a power source rather than just optics. Whenever you are going into the wilderness, make sure you have batteries.

Active infra red equipment works in the same way as a normal active device except that they make use of light that the human eye is unable to deal with and create a recognizable image out of it. This type of light is emitted by most living things and these devices give you the ability to see them when there is no normal light at all.

Image Intensifiers are at the top of the range and use all available light sources, from the visible spectrum and the infra red, to provide a good quality image. This type of technology is normally only used by the military.

Your selection of a night binocular comes down to what type of ambient light you will be operating in and how much you are willing to spend.

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