Starlight scope | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-05

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Night-vision_device


00:01:20 1 History
00:04:31 1.1 United States
00:04:40 1.1.1 Generation 1
00:05:27 1.1.2 Generation 2 (GEN II)
00:06:34 1.1.3 Generation 3 (GEN III)
00:07:43 1.1.4 Generation 3+ (GEN III OMNI IV–VII)
00:10:06 1.1.5 Auto-gating
00:11:46 1.1.6 Figure of merit
00:13:45 1.2 Other technologies
00:17:22 1.3 Soviet Union and Russia
00:19:58 2 Legality
00:22:54 3 See also



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- Socrates


SUMMARY
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A night-vision device (NVD), also known as night optical/observation device (NOD) and night-vision goggles (NVG), is an optoelectronic device that allows images be produced in levels of light approaching total darkness. The image may be a conversion to visible light of both visible light and near-infrared, while by convention detection of thermal infrared is denoted thermal imaging. The image produced is typically monochrome, e.g. shades of green. NVDs are most often used by the military and law enforcement agencies, but are available to civilian users. The term usually refers to a complete unit, including an image intensifier tube, a protective and generally water-resistant housing, and some type of mounting system. Many NVDs also include optical components such as a sacrificial lens, or telescopic lenses or mirrors. An NVD may have an IR illuminator, making it an active as opposed to passive night-vision device.
Night-vision devices were first used in World War II and came into wide use during the Vietnam War. The technology has evolved greatly since their introduction, leading to several "generations" of night-vision equipment with performance increasing and price decreasing. Consequently, they are available for a wide range of applications, e.g. for gunners, drivers and aviators.