VCSEL (Vertical-cavity surface-emitting laser) combines high output power, high conversion efficiency and high-quality beam. Compared with EEL LED and edge-emitting laser. VCSEL possesses the advantages of high output power, high conversion efficiency and high-quality beam. It is superior in accuracy, miniaturization, low power consumption and reliability. With the maturity of VCSEL chip technology, in addition to the large-scale application of optical communication in the telecommunications market and digital communication market, 3D Sensing, which is the core component, has been applied and developed in smart phones, lidar, security monitoring, in vivo detection, iris recognition, AR/VR technology, Biomedicine, robot recognition and avoidance, autonomous driving assistance and other fields.