Attention Deficit Disorder Prosthetic Memory Program

Green Night Vision

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Green Night Vision - © Attention Deficit Disorder Prosthetic Memory Program

Night vision (NV) is the ability to see in low-light conditions, either naturally with scotopic vision or through a night-vision device. It requires both sufficient spectral range and sufficient intensity range. Humans have poor night vision compared to many animals such as cats, in part because the human eye lacks a tapetum lucidum, tissue behind the retina that reflects light back through the retina thus increasing the light available to the photoreceptors.

The night vision goggle (NVG) is a night vision device with dual eyepieces. The device can utilize either one intensifier tube with the same image sent to both eyes, or a separate image intensifier tube for each eye. Night vision goggles combined with magnification lenses constitutes night vision binoculars. Other types include monocular night vision devices with only one eyepiece which may be mounted to firearms as night sights. Night vision systems can also be installed in vehicles. An automotive night vision system is used to improve a vehicle driver’s perception and seeing distance in darkness or poor weather. Such systems typically use infrared cameras, sometimes combined with active illumination techniques, to collect information that is then displayed to the driver. Such systems are currently offered as optional equipment on certain premium vehicles.

Night vision goggles are intentionally designed to make green images because the human eye is more sensitive to wavelengths of light around 555 nanometers, which are dominated by the color green. Moreover, it’s more comfortable and easier for people to watch a green screen for much longer than they can at a black and white one. So, by turning the images green, the natural night vision of a human wearing goggles is enhanced.

Green Night Vision - © Attention Deficit Disorder Prosthetic Memory Program
Green Night Vision - © Attention Deficit Disorder Prosthetic Memory Program
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