1. Specifically designed optoelectronic devices known as night vision goggles are used to observe targets at night and in low light. The night vision device has an infrared transmitter so that it may function in extremely dim lighting.
2. Without a cover, night vision goggles cannot be activated during the day. When evaluating the night vision device's functionality in a well-lit space, it must be done so while the mirror cover is in place, and the test should not last longer than three minutes. Strong light sources should not be dealt with by the night vision equipment, and the interior of the device may be exposed to strong light. Damage it or shorten the night vision device's lifespan. When observing things with night vision goggles with mirror tops, strong flashes should also be avoided.The night vision device's visibility will be reduced or even lost when bright light enters. The night vision gadget should now be removed from the bright light source without delay. The night vision feature will resume in 1-2 minutes. The night vision device may be harmed by extremely bright light sources (eg 10 seconds during the day)
3. Within a minute, the night vision equipment permits a powerful flash and flicker. The light spot that is visible in the field of view is not a flaw in the night vision device; rather, it is brought on by an outside light source flickering. There won't be any light spots if the night vision gadget operates as intended. The presence of a few black spots and brilliant spots within the night vision device's field of view is not a quality issue and complies with the night vision device's quality criteria. Without a cover, night vision goggles cannot be activated during the day.
4. After the night vision device has been stored in a cold room or transported in winter, it must be kept in a warm room for 5 hours before being used again.
5. The night vision device is suitable for use at an ambient temperature of -30 degrees to 30 degrees, a relative humidity of 93% at a temperature of 25 degrees, and a local illumination of 5.10ˉ lux or below.
6. functioning hours of a night vision equipment. When the temperature is higher than 0 degrees, do not turn on the infrared irradiator for: — 20 hours — When the temperature is below 30 degrees, do not turn on the infrared irradiator for: — 16 hours — When the temperature is below 30 degrees, do not turn on the infrared irradiator for: — 2 hours When the night vision device is turned on and works below 10 degrees, the battery must be placed in a warm place (such as chest pocket).
7. Night vision goggles should be kept in a clean place, protected from heavy pressure, mechanical damage, moisture, and solar radiation.
