The center of the machine vision light source system is the collection and processing of drawings, and the imaging quality of the drawings themselves is crucial to the entire visual system; Optical light sources are an important factor affecting the imaging quality of machine vision systems, and many light sources and lighting effects have a significant impact on visual discrimination.

By designing appropriate lighting sources, the optimal separation between the policy information of the picture and the scenery information can greatly reduce the difficulty of image processing algorithm segmentation and recognition, improve the positioning and measurement accuracy of the system together, and improve the reliability and comprehensive performance of the system. On the contrary, if the light source is not designed properly, it will result in more gains than losses in the design of image processing algorithms and imaging systems. Therefore, the success or failure of the design of the light source and optical system is the primary factor determining the success or failure of the system.

In the machine vision system, the role of light sources is:

1. Used as a measure and reference.

2. Lighting policy, improvement policy brightness;

3. Construct the most favorable imaging effect for picture processing;

4. Defeat the disturbance of ambient light and ensure the stability of the picture;