How digital night vision devices work

Digital night vision device is also called digital night vision device, its English name is DigitalNightVision. Most digital night vision devices process and convert this low-intensity light into electrical signals through a highly sensitive CCD image sensor, which is then sent to a microdisplay (a microdisplay is an LCD flat-panel display where each pixel consists of one to four Controlled between transistors, this microdisplay technology offers the best resolution of all flat panel technologies).

The working principle of digital night vision device: darker light --> CCD (CMOS) photoreceptor --> CPU (processed by software) --> built-in display screen --> visible image. Instead of using photomultiplier tubes, digital night vision goggles digitize an image of the available light, reproduce it in software, and push it back into the visible image. The digital night vision goggles mentioned above about digital The image sensor of the night vision device, the CCD photosensitive sensor, as the core component of the digital night vision device, is the "heart" of the digital night vision device, and its level directly determines the level of the digital night vision device. At present, the level of CCD sensor of digital night vision device is divided into A1, A2 and A3, which correspond to the first generation digital night vision device, the second generation digital night vision device and the third generation digital night vision device.

The higher the level of the digital night vision device, the higher the recognition of the observation target, the better the viewing effect, and the longer the distance accordingly. Therefore, for the viewing distance of the digital night vision device, the three generations of digital night vision devices It will be much farther than the first and second generation digital night vision devices. Compared with the first and second generation digital night vision devices, the difference between the new third-generation digital night vision devices is that it is easier to "capture" the image target the distance of the viewed image will be farther and the picture will be brighter when compared in the same dark environment.