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How far can night vision goggles see at night?

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How far can night vision goggles see at night?
Latest company news about How far can night vision goggles see at night?

As a professional optoelectronic equipment, many people are at a loss before purchasing NVG(night vision goggles). The following will introduce some related introductory knowledge of night vision goggles, I believe it will be helpful for everyone to buy night vision goggles:

When will night vision products be used?
---For recreational use, such as camping, traveling, fishing, boating, or natural observation. Other uses include surveillance, search and rescue, and security.

How do night vision goggles work?
Night vision products capture and intensify existing light by focusing light on an image intensifier through an eyepiece. Inside the intensifier, a photocathode is "activated" by the light and converts photon energy into electrons that pass through a The electrostatic area inside the device is accelerated and hits the phosphor surface screen (like a green TV screen), forming an image visible to the human eye. After the acceleration of the electrons, the brightness and the clarity of the image are enhanced.

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How far can night vision goggles see at night?
How far the night vision device can see depends on the environment in which it is viewed, or what kind of night vision device is being tried.
How far can night vision goggles see?
Generally, a first-generation night vision device can distinguish people at about 100 meters under no-light conditions.
The most important parameter of the night vision device is several generations of image-enhancing tubes. In theory, the higher the algebra, the farther the viewing distance and the clearer the image, but the price of the second generation will be much higher than that of the first generation - More than 3000$, and the binocular night vision device is about 6000$ or more.

The aperture is very important. For night vision devices with the same magnification, the larger the aperture, the higher the brightness and the farther you can see.

In the case of night vision device performance, the higher the distance magnification, the farther the night vision device can see, but the higher the magnification, the lower the brightness. This also affects the brightness of the night vision device.

The question of how far night vision devices can see is sometimes a contradiction.

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Observation distance of night vision device:
The observation distance specified by the manufacturer of the night vision device is much larger than the observation distance of the actual night vision device. They tested it first in very good conditions. The observation distance mainly understands two concepts, one is full black mode, and the other is low light mode Low light mode: It does not require infrared in the outdoor environment of starlight and moonlight. The light directly passes through the image intensifier tube, amplifies the weak light, and sees the observation object. In a well-lit environment, the higher the magnification, the farther you can see.

Generally, the first-generation night vision device has an observation distance of 90-260 meters in low light, and the observation distance of the second-generation product is about 200-300 meters.

When we explain how far the night vision device can see, we also need to look at the environment in which the night vision device is used.

All-black mode: All-black mode is an outdoor environment where you can't see your fingers. The first generation of night vision devices must use infrared lights, and then magnify the brightness through the image-increasing tube for observation. Therefore, the observation distance in the all-black mode will be affected by the distance of the infrared light. The distance that the night vision device can see in the all-black mode is only 90-150 meters. Even the second-generation + or third-generation products are at most 200 meters - 400 meters .

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Many people have misunderstandings when buying night vision goggles. They think that night vision goggles can see very far. In fact, the distance that night vision goggles can see is very limited. If you want to buy a night vision goggle that can see 500 meters away, you should consider the forth generation and above.

How far can night vision goggles see?
Buy a first-generation night vision goggle, which can see about 100 meters in total darkness. This night vision goggle is very good. It is not bad to be able to see 200-300 meters with the second-generation night vision device in a dark environment.
Want to know how far night vision goggles can see? Be sure to pay attention to whether you use it more in full darkness or in low light. Generally speaking, night vision devices are used outdoors and are used more in low light. Therefore, it is generally recommended to focus on low-light tendency. observation distance. In the case of total darkness, it is generally necessary to choose a new generation of night vision devices when there is no light underground. The underground is used in a real lightless environment. There is no light outside or there is low light. The underground is a dark environment, no matter how good it is. All night vision devices have to rely on infrared light sources, and the high-power infrared lights of this generation of night vision devices are more practical.

 

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Pub Time : 2022-09-29 16:03:20 >> News list
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