The imaging principle of the camera:
The camera lens is equivalent to a convex lens. The light from the object converges on the film after passing through the camera lens, forming an inverted and reduced real image. Compared with traditional cameras, which use "film" as a carrier to record information, the "film" of a digital camera is its imaging sensor, which is integrated with the camera and is the heart of the digital camera.
Digital cameras use photosensitive devices to convert optical signals into electrical signals, which are then recorded on the memory card after analog/digital conversion.
Extended information
Camera maintenance
1. Pay special attention to holding the camera tightly when using it. It is best to put the camera strap around your wrist or neck to prevent the camera from being damaged. If it falls off from your hand and is broken on the ground, you should also prevent other strong vibrations from affecting its performance.
2. Avoid taking photos against strong sunlight or other strong light sources for a long time. Although CCD and CMOS are relatively resistant to strong light and high temperatures, care must be taken to prevent burns or damage. In special circumstances, when strong sunlight or strong light sources cannot be avoided, the photo taking time should be shortened as much as possible.
3. Stay away from strong magnetic fields and strong electric fields. Strong magnetic fields or strong electric fields will affect the normal operation of the circuits in digital cameras and even cause malfunctions. Therefore, do not place your digital camera on televisions, stereos, induction cookers and other electrical equipment with strong magnetic fields and electric fields.
4. Waterproof and moisture-proof. When used in a high temperature and high humidity environment, the lens is prone to mold and electrical failure. If the camera is used in a humid environment or accidentally gets wet in the rain, dry it or blow it dry in time.
5. Avoid smoke and dust. Do not use it in places with heavy smoke or dust. If it is unavoidable to use it in this environment, it should be cleaned in time. The lens cap should be put on in time between taking pictures.
Reference materials:
Baidu Encyclopedia--Camera