The analysis and introduction of camera module

Camera module is an important electronic device for image capture, widely used in smart phones, smart cars, robots and other intelligent terminals, to complete optical imaging, to achieve photography, information capture and analysis, visual interaction and other functions. The working principle of the camera module is that the light of the shot scene is filtered through the lens, the infrared ray is filtered through the filter, the visible light part is projected to the image sensor, the light signal is converted into an electrical signal through the photodiode, and then the analog signal is converted into A digital signal through the analog-to-digital conversion circuit (A/D), and the signal is initially processed and output. The main raw materials of the camera module include optical lenses, image sensors, voice coil motors, and other auxiliary raw materials such as infrared filters, bases, passive components, substrates, and soft boards. The camera module industry has the characteristics of large investment scale, fast product updating and generation selection, and wide downstream applications. Smart phones are the main application market for camera modules, and smart cars and loT will be the main incremental market for camera modules in the future

The smartphone camera evolves along the direction of pixel upgrade, multi-camera, optical stabilization, large aperture, telephoto lens, optical zoom, multi-lens design, miniaturized module, and large-size pixel module, among which pixel upgrade and multi-camera are the most important technological update paths. In addition, periscope cameras and 3D Sensing cameras are also the focus of mobile phone manufacturers. Periscope cameras can achieve high optical zoom while maintaining the original thickness of mobile phones. 3DSensing camera can recognize the 3D information of the surrounding environment to restore the 3D features of the real world, so as to realize the advanced application functions such as 3D sensing and ARNR. The large pixel module helps increase the light transmission and make the image more delicate.