Knowledge about night vision devices
Special design for night vision goggles?
---Night vision devices are designed to be automatically shorted when not in use, and only start to work when the start switch is pressed. The binocular device has an "on/off" switch that requires the user to turn off the device after use. It is normal if there is a certain "humming" sound, it is intentionally designed to help the user distinguish between power on and power off. The image in the night vision device is formed by a phosphor screen, which has a little astigmatism, so it cannot be as clear as a daytime telescope. Tiny black spots may be seen in the image, which is a natural phenomenon caused by the process of manufacturing the intensifier tube, not a quality problem.
What's in the barrel of a night vision goggle?
--- A night vision goggle tube consists of a set of optics (glass), a simple power supply (battery pack, wiring, transformer, rectifier and capacitor) and an image intensifier (one end is coated with light sensitive material, and A glass vacuum tube with a phosphor screen at the other end).
How to maintain the night vision device?
---The number one damage factor to night vision goggles is using it in bright light. When the night vision device is overloaded, it will automatically cut off the circuit to protect the equipment, but exposure to strong light will shorten the service life of the night vision device. Exposure to rain, fog or even high humidity can damage night vision devices. Considered for use at night, the night vision device is designed to withstand short periods of bright light or wet conditions. There are very delicate vacuum tubes in the night vision device, so be careful about bumping and handling. The method of cleaning the lens of the night vision device is the same as that of cleaning the lens of the camera. The lens has an optical coating, which is easily scratched if it comes into contact with rough materials, or dust seeps into the glass. It is usually not necessary to remove the lens to clean the interior. If it will not be used for a long time, it is best to remove the battery and store the night vision device in a cool and dry place.
