Q&A about Night Vision.
1、What is the difference between night vision device and telescope?
A: Telescope is the direct use of lenses to enlarge the view of the object in the retina imaging optical instruments, do not use the power supply, can not be viewed in total darkness or shimmering environment; night vision device is the use of like the principle of enhancement or infrared imaging to observe the instrument, the clarity is not as good as the telescope, but is suitable for viewing in total darkness or starlight moonlight environment.
2、Can night vision devices be used during the day?
A: No, and it is not necessary. Do not open the lens cap and power supply at the same time during the day or under bright light, otherwise it will lead to the damage of the core components of the night vision device over time.
3, infrared can be seen directly with the naked eye?
A: Infrared light outside the visible light band, can not be seen directly with the naked eye, so it does not matter what color.
4, night vision device can distinguish colors?
A: No. Night vision device imaging is generally yellow-green, and can not reflect the true color of the object.
5, why active night vision devices suitable for civilian use?
A: Night vision devices with active features have an infrared lamp, emitting a beam of infrared light to irradiate the scene. So the imaging is clear, but the active emission of infrared light is easy to be detected by the enemy's instruments and expose the target, so the military was eliminated, but for civilian use there is no exposure problem, so the disadvantages become advantages, coupled with the low price, so with active infrared function of the night vision device is suitable for civilian use.
