Why does the night vision device have a green screen?
Whether it is the night vision battle scenes on movies and TV or the information about night vision devices on the Internet, the night vision devices we have learned all have a strange green luster. Therefore, many people think that night vision devices are green, and even those that are not green are not called night vision devices.
Why is the night vision device screen green?
Night vision imaging is known for its eerie green sheen, so what exactly is causing this night vision device to produce such a green glow?
Why is the night vision device screen green?
This kind of night vision device with green screen is inseparable from the image enhancement system, which is generally called night vision device (NVD). There is an image intensifier tube in the NVD, which can be used to collect and amplify infrared and visible light. Night Vision At the end of the image intensifier tube, electrons hit a phosphor-coated screen. The electrons maintain their relative positions as they pass through the microchannel, which ensures that the image remains intact because the electrons line up in the same way that the photons lined up in the first place. The energy carried by these electrons causes the phosphor to reach an excited state and release photons.
Why is the night vision device screen green?
night vision goggles
These phosphors create a green image on the screen, which is a feature of night vision goggles. Through another pair of lenses called eyepieces, the green phosphorescent image can be observed, and can be used to magnify the image or adjust the focus. NVD can be connected to electronic display devices, such as monitors, or directly observe images through eyepieces. This is why the night vision device sees the picture as green.
Why is the night vision device screen green?
Actually, not all night vision images are green! This is not the case with infrared digital night vision devices, infrared thermal imaging night vision devices, etc. In particular, infrared thermal imaging night vision devices have been widely used in military, industrial, civilian, outdoor hunting and many other fields due to their unique performance.
