Use of night vision devices (generic version).
Introduction to the use of night vision devices:
1. Night vision devices are precision optoelectronic instruments used to observe targets at night and in low light. In order to meet the work in very low illumination, most night vision devices are equipped with infrared emitters.
2. It is forbidden to switch on night vision devices during the day without a protective cover. When checking the working performance of the night vision device in a lighted room, it must be carried out when the night vision device is covered with a mirror, and in a bright light environment for no more than 3 seconds. And the night vision device should not be exposed to strong light sources, strong light into the night vision device may be damaged or reduce the service life of the night vision device. And may hurt the user's eyes, when the bright light into the night vision device its brightness will be reduced or even disappear. This is the instrument's automatic protection function works, at this time, the night vision device should be immediately taken away from the strong light source. Users should not start the instrument again, after 1-2 minutes, the night vision instrument function will be restored. Particularly strong light sources can cause damage to the night vision device (e.g., for ten seconds during the day).
3. The night vision device allows strong flashes and flickers within 1 minute. The flare observed in the field of view, also called ghosting, is not a defect of the night vision device, but is caused by the external light source irradiating the lens. Night vision device will not appear flare when working in total darkness, night vision device observed when feeling the existence of a small number of black spots and bright spots is not its quality defects, but in line with the quality standards of night vision devices. The night vision device is prohibited to be opened during the daytime when there is no protective cover.
4. After the night vision device is kept in a cold room or transported in winter, it must wait for a few minutes in a warm room before it is used again. Otherwise the lens will fog up and affect the observation.
5. Night vision devices are generally suitable for use in the ambient temperature -30 degrees to 30 degrees, temperature 25 degrees relative humidity of 93%, local illumination of 5.10 ˉ lux or below. Levels can reach -50 degrees to 70 degrees
6. Night vision device operating time.
Without switching on the infrared illuminator:
--- When the temperature is above 0 degrees - 5-20 hours
---When the temperature is -30 degrees - 2-3.5 hours.
With infrared irradiator switched on:
--- At temperatures above 0 degrees - 2-5 hours
--- At temperatures below -30 degrees - 1-5 hours
The battery must be placed in a warm place before the night vision device is operated below 10 degrees and switched on.
7. The night vision device should be stored in a clean place, avoiding heavy pressure, mechanical damage, humidity, and solar radiation.
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