The infrared night vision instrument and the light night vision instrument are all mistaken, the city has a small light night vision instrument also called the infrared light night vision instrument, also called the infrared night vision instrument, this kind of call is easy to let the consumption misunderstand, and also leads to a lot of outsiders, the friends do not understand the wrong information.
The infrared night vision instrument is divided into "active infrared night vision instrument" and "passive infrared night vision instrument", "active infrared night vision instrument", which is our commonly known "light night vision instrument", as well as the night vision instrument with IR function, that is to launch infrared light. At present, some of all the active infrared night vision instruments in the world have a little light. And the IR function, including the 1 generation of night vision, also has these functions. There is no two functions that only advanced night vision devices have infrared and low light level.
Passive infrared night vision is commonly known as "infrared thermal imager". But the actual regular call is the infrared night vision instrument, but now this kind of call and the light night vision instrument mixed with the night vision instrument, so we call this passive infrared night vision instrument called infrared thermal imager, that is, the thermal imager.
1. The difference between infrared night vision and low light level night vision.
The difference between the two night vision instruments is that the active one is illuminated by the IR of the night vision instrument itself, then the infrared light is reflected on the object lens of the night vision instrument, or through the natural stars, and then reflected to the object lens, and the image is seen through the image enhancement tube in the night vision instrument. The passive night vision instrument is imaging by the infrared radiation emitted by the object itself. The key is that one is reflected through the object and the other is spontaneous by the object.
Two. Differences between low light level night vision and infrared thermal imagers.
1. the field of view of the LLL night vision instrument is round, and the thermal imager's field of view is square.
If you have used the ordinary digital night vision instrument, you will find that the digital night vision instrument and the general infrared night vision instrument (low light level night vision device) are completely different from the observation. This is because the ordinary infrared night vision instrument (the light night vision instrument) is the direct observation of the target through the lens, so the vision that you see is the same as the circle of the lens. And digital night vision, is electronic, in fact, you see the eye is the internal liquid crystal screen imaging, instead of seeing the target directly, so the view is square. The thermal imaging night vision instrument is the same as the digital night vision instrument. Whether the handheld thermal imaging night vision instrument (Ye Jingping is outside the machine), or the telescope type thermal imaging night vision instrument, the field of vision is square. It is not the direct sight of the target, and the imaging on the LCD screen. So the thermal imager is all digital.
The ordinary digital night vision instrument can not compare with the thermal imager, nor can it compare with the 2 generation + ordinary night vision instrument. But the effect of the third generation digital night vision instrument is the real Three Generation night vision instrument. The field of view is the same as that of the thermal imager. There is a difference between the two.
The following are the differences between the two images:
2. generally speaking, the ordinary 2 generation + infrared night vision (low light level night vision) imaging is green, more like the positive effect. And the imaging of the thermal imaging night vision instrument is colorful.
At present, the low light night vision instruments used by the forces of all countries in the world are usually 2 and 3 generations. It can be used in the civil, military, and field of the night of the 1/4 moonlight. However, the 3 generation night vision instrument is difficult to buy at home, including in other countries, except for the 3 generation digital of OrfA's V200V400. Night vision equipment is available in China (with a small quantity and price ranging from 40 thousand to sixty thousand). However, the 3 generation and the 4 generation of night vision instruments are prohibited by all military countries, except for a small number of varieties.
The world's mainstream night vision instrument is in the first or 1 generations and half, although the price is 1000-3000, but the effect is not flattering, such a night vision instrument is only suitable for personal use, and can not meet the requirements of higher actual work. And a generation of night vision instrument is using an image tube, the image effect is not clear, if you want a generation, and the effect of the night vision instrument, please choose the digital night vision instrument.
Now let me introduce the difference between digital night vision and traditional night vision.
1. advantage: digital night vision device can directly video output, traditional night vision device does not. This is a lot of units buying digital night vision
The reason for the instrument.
2. advantage: compared with the 1 generation single tube night vision system, the digital night vision instrument actually has far more distance to observe. One generation of single tube night vision instrument,
You can't see anything in a little darker. So at this point, the digital night vision instrument has gradually replaced the position of the generation of single tube night vision. But the digital night vision device can not see the target clearly at about 100 meters.
3. drawback: most of the digital night vision devices are built in LCD screens. Because the LCD screen is too small and the resolution is low, they feel their vision.
It's very small and can't see.