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Current cameras feature abilities such as motion detection and two-way audio, allowing users to receive notifications of activity and speak and listen through the camera. Home surveillance cameras used for security purposes have become more accessible, but have sparked security concerns from consumers.
The effect on the natural night vision of the eye is evident A standard telescopic sight augmented with a night-vision device in front on the M110. Note that in addition to the image intensifier, the NVD gathers much more light by its much larger aperture A 1PN51-2 night-vision reticle with markings for range estimation First-person view ...
The Lockheed Martin Arrowhead team outfitted the first eight AH-64D Apache Longbows with the new day/night vision system at The Boeing Company’s Apache production facility in Mesa, Arizona, during 2005. The Arrowhead-equipped Apache helicopters departed for Fort Hood in two flights beginning June 23, and were officially delivered on 30 June 2005.
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Mounted above the TADS, the Pilot Night Vision System (PNVS) contains an infrared camera slaved to the head movements of the pilot. PNVS can rotate +/− 90 degrees in azimuth and +20/−45 degrees in elevation. PNVS has a high rate of movement (120° per second) so as to accurately match the head movements of the pilot.
Active infrared night-vision combines infrared illumination of spectral range 700–1,000 nm (just over the visible spectrum of the human eye) with CCD cameras sensitive to this light. The resulting scene, which is apparently dark to a human observer, appears as a monochrome image on a normal display device. [ 13 ]