Night vision sights are mainly composed of night vision devices and sights.
* Working principle of night vision devices
1. Use a special The lens can focus the infrared rays emitted by objects in the field of view.
2. The phased array on the infrared detector element can scan the converged light. The detector element is capable of producing a very detailed picture of the temperature pattern, called a thermogram. In about 1/30 of a second, the detector array can obtain temperature information and produce a thermogram. This information is obtained from thousands of detection points in the field of view of the detector array.
3. The thermogram generated by the detector element is converted into electrical pulses.
4. These pulses are sent to the signal processing unit - a circuit board integrated with a precision chip, which converts the information emitted by the detector elements into data that can be recognized by the display. Brands
There are currently about 20 brands of infrared night vision devices sold around the world. The main brands are:
1. YUKON:
Chinese translation: Yukon River/Yulan/Magnolia
Belarusian brand, an old brand of infrared night vision devices. At present, it occupies the position of the first brand in the world's civilian night vision devices. Mainly produces first-generation night vision device products. The products are known for their high performance and low price. In the past two years, YUKON has made major breakthroughs in the production of second- and third-generation night vision devices, with new products emerging one after another.
The picture on the right is a binocular night vision device from YUKON.
2.Trueyard:
Chinese translation: Tuyade
American brand, a large-scale optoelectronic product manufacturer in the United States, the main product focus is on 1st generation night vision In terms of instrument products, it also produces some third-generation night vision instruments (but only for purchase by the US military). It is extremely influential in the field of civilian night vision instruments in the United States and is the number one selling brand of night vision instruments in the United States. Trueyard has a lot of patented technologies and has its own brand of lens manufacturers. The performance of its first-generation products is comparable to that of its second-generation products.
2.RHO
Chinese translation: None
Russian brand, Russian military procurement brand, famous Russian military industrial enterprise, producing 2nd and 3rd generation night vision instrument. The synonymous name of high-end night vision device brand, which has a very high reputation in the global military field. In terms of civilian use, it occupies 60% of the global market share of second- and third-generation night vision devices.
4.ATN
Chinese translation: None
American brand, a well-known brand of American military night vision equipment, specializing in the production of 2nd and 3rd generation night vision equipment. host. It has a relatively large influence in the U.S. military.
5.Bushnell
Chinese translation: Bushnell
An American brand, mainly famous for its telescopes. It mainly produces first-generation night vision devices, which are used by civilians in the United States. It occupies the second brand position in the field of night vision devices.
6.ORPHA
Chinese translation: ORPHA
German brand, a well-known military industrial enterprise in Germany, mainly produces first-generation night vision devices and has a strong reputation in Germany Very high influence.
Other brands include expensive night vision goggle brands such as Swarovski and Chase (which are aristocratic and not cost-effective). There are also some Russian night vision devices on the market, usually of small brands or no brands at all.
Edit this paragraph to purchase key points. When purchasing night vision devices, choose according to the following order:
1. Image intensifier tube: several generations. Be sure to confirm with the merchant when purchasing. Because the night vision device packaging and instructions generally do not indicate which generation of image intensifier tube it is. Of course, if you want to buy a 2nd or 3rd generation night vision device, it is best to buy a night vision device that is clearly marked with which generation of image intensifying tube it is, so as not to infringe on your rights and interests. The night vision devices currently on the market, such as Russia's RHO, indicate which generation of image intensifier tubes are used on the product packaging and machine.
2. Lens: Look at the lens diameter and magnification. Without considering the size, of course, bigger is better. For the same image intensifier tube, in principle, the larger the diameter, the farther the observation distance, and the clearer the image.
3. Image enhancement technology: Generally, night vision devices equipped with this technology will have better and clearer image brightness under the same conditions.
4. Infrared emitter: The quality of this performance also directly affects the imaging quality.
5. Resolution: The resolution of the lens is very important. The higher the resolution, the clearer the image displayed.
As for the nominal observation distance of the night vision device, the identification distance. Since there are no formal standards, different opinions vary. In fact, it has no reference significance. Generally speaking: the distance of the first generation is 100-250 meters, the distance of the second generation is 200-350 meters, and the distance of the third generation is 300-500 meters, and objects can be seen clearly. The specifics are determined by the quality of the lens, image processing technology, infrared emitter, and resolution. 5. The signal processing unit sends information to the display, thereby presenting various colors on the display. The color intensity is determined by the emission intensity of infrared rays. The pulses from the detector elements are combined to create an image.
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