How can I choose the best video device for night vision?
Night vision video devices use electronics and chemistry to make images under weak lighting conditions. The equipment can be wrapped as or built into it, such as glasses, telescope and weapons monuments. There are a number of technologies with similarly wide prices. What light is available at night it passes through the lens on the front to the tube of the photocathode. This changes photons that make up light into electrons. These electrons are then electrically and chemically amplified and then peppered on the green phosphor tube. This will turn them back to visible photons. As the process reduces light to one color, it is used green because it is the simplest color for the human eye to detect contrast.er generation usually costs more. First generation devices have remarkable limitations, such as high -root noise, some blurred around the edge of the image and glow that persists for some time after the device is switched off.
Second -generation night video device uses another component known as a micro -channel board, to further amplify the electrons. This increases the brightness and sharpness of the image. There are a number of second -generation facilities, with the more sophisticated ones used by officials in criminal proceedings.
Video devices for night vision of the third generation makes two other changes. The photo -coat tube is made of Gallia arsenide, which allows a clearer resolution. A special film helps to extend the life of the tube and in some cases double its expected life. Third -generation devices are usually considered a military standard A, Although is available to consumers, are of high price.
Fourth -generation night vision video devices have an automated power system that allows the photochat to respond immediately to lighting changes. There are also other technical improvements that improve image quality and extend the distance over which the devices work. TheThe blacksmith's devices often cost $ 5,000.
People may have to check the legal situation in their jurisdiction about video devices for night vision. In general, there are no restrictions in the United States. Some European countries limit either holding some devices or using them in certain situations, usually including mounting equipment on firearms.