The role of LED light sources in machine vision systems

In machine vision systems, the functions of light sources include at least the following: 

1. Illuminate the target and increase the brightness of the target; 

2. Form an imaging effect that is most beneficial to image processing; 

3. Overcome ambient light interference and ensure image stability; 

4. Used as a tool or reference for measurement; 

The ideal light source should be bright, uniform, and stable. There are three main types of light sources used in machine vision systems: high-frequency fluorescent lamps, fiber optic halogen lamps, and LED light sources.

At present, LED light sources are commonly used and mainly have the following characteristics: 

1. Can be made into various shapes, sizes and various illumination angles; 

2. It can be made into various colors according to needs, and the brightness can be adjusted at any time; 

3. Through the heat dissipation device, the heat dissipation effect is better and the brightness is more stable; 

4. Long service life; 

5. Fast response, reaching maximum brightness in 10 microseconds or less; 

6. The power supply has an external trigger, which can be controlled by a computer, has fast starting speed, and can be used as a strobe light; 

7. LEDs with low operating costs and long life will show greater advantages in terms of overall cost and performance; 

8. Special designs can be made according to customer needs.