2022-08-25

Contact Engineer manager

Engineer Manager Name:    Jacky

WhatsApp/ Wechat:   0086-18792456795

Email: mh_elec@126.com or jacky@mh-elec.com

Selection guide

1. Intensifier tube

The imaging tube is very important for several generations. The worst is the 1st-generation imaging tube night vision device. The clarity is very poor. If it is completely dark, it is almost invisible and the viewing range is very small. Relatively speaking, the 2nd generation , 2 generation + is the mainstream product on the market. It is better than the first-generation night vision device in terms of effect, and it is more cost-effective than the third-generation night vision device in terms of price. Whether it is price or performance, it is the one that the public currently chooses the most.

2. Lens

The same intensifier tube, in principle, the larger the aperture, the wider the observed range. However, the size of the caliber will also affect the style of night vision goggles. For example, head-mounted night vision goggles are not suitable for choosing too large calibers, because the larger the caliber, the heavier the weight will be. Wearing it on the head will affect the use effect. Or choose according to your needs.

3. Magnification

The aperture size and magnification of the lens are very important for a product. The larger the aperture of the lens, the larger the observed range, and the larger the magnification, the stronger the sense of zooming in on the distant target. 1 times, 2 times, 3 times, 4 times, 5 times, 6 times, 8 times, 10 times. Of course, the choice of magnification is completely related to the target you want to observe and the style of night vision goggles.

4. Observation distance

The ability to see objects clearly depends on the light level at the time, such as no light (tunnels, underground holes) and low light (including meniscus, half moon, full moon, starlight, lights), etc., the observation distance that can be affected is It is not the same, and it is also affected by the quality of the lens, image processing technology, infrared emitter, and resolution.

5. Types of night vision devices

In addition to being used for observation at night, night vision devices are also different in style and type. Generally, they can be divided into head-mounted night vision devices, hand-held night vision devices and night vision sights. If it is further subdivided, there are monocular monocular, binocular binocular, binocular monocular night vision device, etc. Head-mounted night vision goggles are generally composed of helmets, rotating brackets, and night vision goggles. They are relatively small and portable. They can be worn on the head when in use, and the direction of the lens can be adjusted. It is very suitable for people who are inconvenient to hold the machine; the hand-held night vision device is suitable for a wide range of occasions, and some models can also be used as a head-mounted type. If you are simply hand-held, you can choose a model with a slightly larger diameter and magnification; It is also small and portable, and can be installed on shooting equipment according to personal needs. Night vision sights have high requirements for product clarity.

6. Function

The function of a product is very important to the product itself. The more functions a product contains, the more it can reflect the value of a product. Before buying a night vision goggle, you must confirm the purpose of buying a night vision goggle, whether it is an ordinary night vision goggle for night patrol, reconnaissance, and viewing, or for law enforcement and evidence collection by relevant departments. Night vision devices for law enforcement and forensics need to have functions such as photography and video. There are few such night vision devices on the market, and most of them are digital night vision devices. They do not use the image intensifier tubes of traditional night vision devices, but the CCD imaging of digital cameras. The target seen during observation is the image formed in the built-in liquid crystal. On the screen, the image area is square, and the small field of view is a disadvantage.

maintenance

The number one damage factor to night vision goggles is use in bright light. The night vision goggles will automatically cut off the circuit when overloaded to protect the device, but exposure to strong light will shorten the life of the night vision goggles. Exposure to rain, fog and even high humidity can damage night vision devices. For use at night, night vision goggles are designed to withstand short periods of bright light or humidity. There are very delicate vacuum tubes in the night vision device, so be careful not to bump it and handle it carefully. The method of cleaning the night vision lens is the same as the method of cleaning the camera lens. The lens has an optical coating, which can easily be scratched if it comes in contact with rough materials, or dust seeps into the glass. Usually there is no need to remove the lens to clean the interior. If it will not be used for a long time, it is best to store the night vision device in a cool and dry place after removing the battery.

Precautions

1. The night vision device should be stored in the jacket, and its environmental requirements are the temperature of 5 degrees to 40 degrees, and the relative humidity of not more than 80%.

2. The night vision device must be used at night, cannot be aimed at strong light, and cannot be used during the day;

3. During the daytime inspection, the lens cover cannot be opened, otherwise it will be easily damaged;

4. It is necessary to use good quality lithium batteries or alkaline batteries. Poor quality batteries will affect the use effect and easily damage the equipment;

5. try to avoid rain or fog, to prevent falling, bumping, bumping;

6. Do not wipe the lens frequently. If you need to wipe, please use lens paper or lens cloth, and be careful not to scratch the lens;

7. When the night vision device is to be stored for a long time (more than two weeks), please take out the battery to prevent the battery fluid from damaging the device.

8. Please place it in a dry and ventilated place to prevent the lens from getting damp and moldy.

Troubleshooting

The fault judgment and maintenance process of the night vision indicator:

Since the power indicator light is not on, first check whether the fuse of the night vision indicator is open. After checking that the fuse is in good condition and comprehensive fault phenomena, it can be inferred that the fault may occur in the power supply part of the servo release board, and then check the night vision indicator. The power indicator light, use a multimeter to detect and find that the indicator light is open circuit, replace the indicator light and troubleshoot.

Night vision indicator maintenance and fault maintenance can not only affect the use of the night vision indicator, but also may affect the service life of the night vision indicator.

Contact Engineer manager

WhatsApp/ Wechat:   0086-18792456795

Email: mh_elec@126.com or jacky@mh-elec.com