The ability to see in reduced illumination (as in moonlight).
the ability to see in reduced illumination, as in light reflected from the moon, stars or any distant or weak light source.
improves visual capabilities during nighttime, or in low light surroundings. Used commonly by the military, aviators and by law enforcement for surveillance. Night vision is also a useful tool for nocturnal hunters, hikers and birders.
Light amplification (up to 35,000x) permitting the viewer to see throught the binoculars or monocular in near total darkness.
The enhanced ability to see objects in the dark. Astronomers use red-lensed flashlights and red observatory lights to preserve their night vision.
See entry for Infrared Capability.
The increased ability to see dim object, such as faint stars, due to a sensitization of the eye's 'rod' receptors. Exposure to bright light desensitizes the rods and therefore reduces night-vision.
A monocular or binocular piece of equipment that allows you to see in near total darkness by intensifying existing light. It may also be utilized in total darkness with an infrared attachment. Night vision is very useful for search and rescue missions.
Vision that is mediated by the rod photoreceptors in the eye.
Night Observation Device (NOD); night sight; night viewing weapon sight; night vision equipment (NVE); night viewing aid (NVA); night viewing goggles (NVG) a variety of devices, using (passive) image intensifiers (intensification of residual light) and/or thermal (infrared) imagers to improve observation, target acquisition or aiming in low light conditions; they can be coupled with (active) laser aiming lights (laser illuminators or designators, target markers, spot projectors); they take the form of hand-held or helmet-mounted binocular and monocular goggles, pocket scopes, rifle-mounted weapon sights, or armored vehicle periscopes. See Thermal Imaging.
Night vision is the ability to see in a dark environment. Whether by biological or technological means, night vision is made possible by a combination of two approaches: enhanced spectral range, and enhanced intensity range.