1. Concept of digital night vision goggles
Different from traditional infrared night vision goggles, digital night vision goggles do not use image intensifiers as image intensifiers, but use charge coupled devices or complementary metal oxide semiconductors as image intensifiers. Low-light CCD can recognize very dark light, and then convert it into visible digital signals, which are displayed on the LCD screen inside the night vision goggles, and then the target object can be viewed through the eyepiece.
2. Working principle of digital night vision device
Dark light goes to CCD photoreceptor, then to CPU, then to built-in display, and finally to visible image. Instead of using photomultiplier tube, digital night vision device digitizes the image of visible light, then copies it in software, and then pushes it back to visible image.
Definition and operation principle of digital telescope
1. Definition of digital telescope
Binoculars with external display screen, photo recording and digital zoom functions can store video images and videos on memory cards. Some digital binoculars have tripod interfaces, camera shutter cables, USB interfaces, etc.
Compared with traditional binoculars, digital telescopes have the functions of photo recording and digital zoom. It can be said that digital telescopes are a combination of digital cameras and telescopes, with the functions of photo recording, digital zoom and telescope. It can be used as a telescope, and can also be used as a simple digital camera or video recorder. It is a new type of high-tech product derived from the telescope category.
2. Operating principle of digital telescope
a: Operating principle of telescope: It is the same as the operation of traditional binoculars. After adjusting the eye distance and diopter of the two eyepieces, adjust the central focusing wheel to focus on different viewing targets.
b: Operating principle of photo and video recording: After installing batteries or other power sources, turn on the power switch, enter the photo or video recording mode, adjust the central focusing wheel, and use the viewfinder to see the image clearly on the display screen or eyepiece, and then press the function button to take photos and record videos.