When it comes to laser lights, many people first think of stage performances, but in fact, its application fields are very wide, covering entertainment, industry, scientific research, medical care and many other industries. In the entertainment field, in addition to stage performances and outdoor electronic music festivals, it is also used in bars, KTVs, amusement parks and other places to create an immersive light and shadow experience; in the home field, small laser lights can be used for holiday decoration and atmosphere creation. In the industrial field, high-power laser lights are used for laser cutting, laser welding and laser marking, which have high precision and efficiency, and are widely used in machinery manufacturing, electronic processing and other industries. In the scientific research field, laser lights are used for physical experiments, astronomical observation and spectral analysis to help researchers carry out various studies. In the medical field, low-power laser lights are used for laser physical therapy to assist in the treatment of skin diseases, joint pain and other diseases. In addition, laser lights are also used in traffic indication, security monitoring and other fields, becoming an indispensable equipment in modern society.