Misunderstandings in the purchase of night vision devices
1. Blind pursuit of high targets
Any product has its own technical indicators, and high indicators certainly represent relatively high performance. The most important technical indicator for the night vision device is its viewing distance. How far can night vision goggles see?
As for the answer to this question, different sellers or brands have different interpretations. For example, the sales of a certain night vision device are very high, and some sellers even claim that their night vision device can reach more than one kilometer, while some buyers blindly pursue the parameters of high indicators due to lack of understanding of the product, and blindly purchase the so-called sales volume. It is not uncommon for high-quality goods to lead to procurement mistakes.
The factors affecting the viewing distance of the night vision device include the level of the image intensifier tube, the magnification, the size of the objective lens and the intensity of the light transmittance, the irradiation distance of the infrared auxiliary light, the size of the observation target, the use of ambient light conditions, and so on. The most important factor is the level of the image enhancing tube. The higher the level, the higher the resolution, etc., and the farther the viewing distance will be. If it is the case of the same level of image enhancer tube and resolution, and the same use environment to watch the same target, the night vision device with greater infrared intensity and magnification will of course see the farther.
According to the actual measurement data of night vision products in the industry, watching 1.7 adults, under 1/4 moonlight, the viewing distance of the first-generation night vision device is about 20-50 meters, and the second-generation and second-generation + night vision devices The viewing distance is 100-200 meters, and the viewing distance of the third-generation and quasi-third-generation night vision devices can reach 500-800 meters. The data will have deviations and are for reference only.
2. About the price of the night vision device
The price of a generation of night vision goggles ranges from a few hundred to a few thousand, but in fact, they are similar in terms of use effect and viewing distance. It is no problem to meet the basic short-distance target observation, so when buying this level When it comes to night vision goggles, you can choose a big brand with a cheap price.
The price of the second-generation night vision device is about 10,000 yuan, because its own image enhancement tube technology and accessories are monopolized by foreign brands, and most of them are imported. Due to its superior performance, this type of night vision device has higher resolution and higher target recognition, and is widely used. If the price is not considered, this type of night vision device can be said to be a level that can truly reflect the performance of night vision devices.
The price of the third-generation and fourth-generation night vision devices is even higher. Due to the relevant domestic laws and regulations in China, these two types of night vision devices are still somewhat restricted in the civilian market. As far as we know at present, only the ORPHA brand has three generations of night vision products on sale in China.
