Four frequently asked questions about night vision devices
1. To determine how many generations the image enhancing tube is. The higher the level of the image intensifier tube of the night vision device, the higher the clarity and the farther the observation distance will be. Generally, the first-generation image intensifier tubes are mostly on the market, and the second-generation, third-generation and fourth-generation infrared night vision The price of the instrument is more expensive, and the quantity is not many. In the purchase of a generation of night vision devices, some brands of night vision devices have been upgraded from the original image intensifier tube level to 1st generation +, such as the infrared night vision device CS-2 of Orfa, Germany. a series of. The 1st generation + infrared night vision device has improved brightness and clarity compared with the 1st generation, and the observation distance has also increased year-on-year. At present, the price/performance ratio of the 1st generation + has a great advantage.
2. Look at the lens aperture and magnification lens. Without considering the volume, of course, the larger the parameters of the objective lens and magnification, the better. The principle of the same image enhancing tube is that the larger the magnification, the farther the observation distance; the larger the aperture of the objective lens, the better the light transmission, and the clearer the image. Like the configuration of night vision devices, there are 3X42 and 5X50, of course, the effect of 5X50 will be better.
3. Whether it has image enhancement technology: Generally, night vision devices with this technology will have better image brightness and clearer images under the same conditions. Like Alfa's infrared night vision devices, the latest CS-2 series all have image enhancement technology, while the original CS-1 series does not.
4. The performance of the infrared emitter: the quality of the performance also directly affects the image quality. The infrared transmitter is used as an auxiliary light source after it is turned on in total darkness, and it can also be used in a low-light environment. If it is used in a low-light viewing environment, the brightness and other intensity of the viewed image will increase.
