What is digital night vision?

Digital night vision devices, as well as other passive optical night vision technologies, allow the viewer to perceive images in almost complete darkness. They amplify low levels of ambient light to create a usable image, unlike other night vision devices such as thermal displayers and forward -looking infrared (flir) that rely on infrared light for lighting. Range, telescope, monocles and cameras are made of digital night vision technology and a large selection is available to consumers. The earliest devices for night vision, introduced during World War II, were infrared ranges requiring the use of infrared lights that could give out the user's position. In Vietnam's power of the United States, the first passive ranges of night vision used no other light source. Since then, innovations have created generations of optical devices improved light amplification, image quality and noise reduction. DIGItal night vision does not correspond to the quality of the latest night vision sensors, but are cheaper to produce, which is high -quality light amplification in a fraction of the cost.

Standard optical night vision devices amplify the light projected through the photocathod and intensifying tube, and then projected an amplified image on the phosphor screen in front of the eyepiece. The digital night vision device is instead processed in a charged connecting device before it projects on the liquid crystal display (LCD). Because the LCD glow can reveal the viewer's location, many of these devices are equipped with eyepieces instead of screens.

While the latest generations of optical night vision devices offer excellent image quality and can create usable images in the lower light, digital devices have some advantages. The first is the cost; The price of the latest optical models is for most SPThe detectors and even for many criminal proceedings are unbearable, but digital devices cost less than the first generation models. Like their optical cousins, digital devices do not work in overall darkness, but most of them are equipped with small infrared lights that provide some lighting.

Many digital devices come with multiple display settings, allowing the viewer to see the image in green, red or gray. Green provides the sharpest quality, reducing the viewer's night vision, and Gray creates the least imaging light. Digital devices also have another advantage of versatility, as unlike optical devices, digital night vision, such as ranges and binoculars, can normally be used in daylight without risk damage to the item.