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  2. Night vision - Wikipedia

    en.wikipedia.org/wiki/Night_vision

    Night vision is the ability to see in low-light conditions, either naturally with scotopic vision or through a night-vision device. Night vision requires both sufficient spectral range and sufficient intensity range. Humans have poor night vision compared to many animals such as cats, dogs, foxes and rabbits, in part because the human eye lacks ...

  3. AN/PSQ-42 - Wikipedia

    en.wikipedia.org/wiki/AN/PSQ-42

    Helmet mounted 4x AA-type battery pack. The AN/PSQ-42 Enhanced Night Vision Goggle-Binocular (ENVG-B) is a third-generation passive binocular night vision device developed for the United States Army by L3Harris. It combines dual tube image-intensifying (I²) and thermal-imaging technologies into a single goggle, enabling vision in low-light ...

  4. Night-vision device - Wikipedia

    en.wikipedia.org/wiki/Night-vision_device

    A night vision device usually consists of an image intensifier tube, a protective housing, and an optional mounting system. Many NVDs also include a protective sacrificial lens, mounted over the front/ objective lens to prevent damage by environmental hazards, [ 1 ] while some incorporate telescopic lenses.

  5. Handycam - Wikipedia

    en.wikipedia.org/wiki/Handycam

    Handycam is a line of camcorders made by Sony and introduced in 1985. Handycam was first used as the name of the first Video8 camcorder in 1985, replacing Sony's previous line of Betamax-based models of camcorders. The name was intended to emphasize the "handy" palm size nature of the camera, made possible by the then-new miniaturized tape format.

  6. AN/PVS-14 - Wikipedia

    en.wikipedia.org/wiki/AN/PVS-14

    The AN/PVS-14 Monocular Night Vision Device (MNVD) is in widespread use by the United States Armed Forces as well as NATO allies around the world. [3] It uses a third generation image intensifier tube, and is primarily manufactured by Litton Industries (Now L-3 Warrior Systems) and Elbit Systems of America (formerly Harris Night Vision, formerly Exelis, formerly ITT [4]). [5]

  7. Day and night camera - Wikipedia

    en.wikipedia.org/wiki/Day_and_night_camera

    Day and night camera. A day and night camera is a security camera that can see the picture during the day hours, when there is enough sunlight, and during the night in total darkness or minimum illumination. A day and night camera has special lenses that allow infrared emission produced by infrared LEDs and reflected from objects to go through ...

  8. AN/PVS-7 - Wikipedia

    en.wikipedia.org/wiki/AN/PVS-7

    2 or 3. The AN/PVS-7 is a single tube biocular night vision device. Third-generation image intensifiers are able to be installed and are standard for military night vision. Most newer PVS-7 intensifier tubes are auto-gated to prevent image intensifier damage if exposed to intense light. The goggles have a built-in infrared Illuminator for low ...

  9. Adaptation (eye) - Wikipedia

    en.wikipedia.org/wiki/Adaptation_(eye)

    Adaptation (eye) In visual physiology, adaptation is the ability of the retina of the eye to adjust to various levels of light. Natural night vision, or scotopic vision, is the ability to see under low-light conditions. In humans, rod cells are exclusively responsible for night vision as cone cells are only able to function at higher ...

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