Advantages of LED exposure machine compared with traditional exposure machine

1. Ray parallelism:

Precise focusing and splitting lenses are adopted, and the angle of parallel light is controlled within 10 degrees, without diffuse and large angle reflected light and transmitted light. Advantages: high resolution of resistance welding imaging, capable of making precision BGA, resistance welding bridge and other products.

2. Intensity uniformity of exposure table:

The light intensity distribution is very uniform, the overall light intensity uniformity of the table top exceeds 90%, and 100 % of the table top interval is available. Advantages: The product can be exposed in any range of the table top, and the consistency between the four corners and the middle quality of the product is 100 %.

3. Light intensity stability:

The light source is stable, the service life reaches 20000 hours, the change of light intensity is extremely small, and the imaging stability will not have periodic fluctuations. Advantages: reduce parts replacement and maintenance costs.

4. High imaging accuracy of resistance welding:

Near parallel light exposure, the energy gauge is controlled at 10-12 grids, which can be deeply solidified. The solder mask is developed without side erosion. After development, the solder mask opening window is vertical. Advantages: Solder resistance development is free of side corrosion, and surface treatment such as gold deposition, gold plating, tin deposition, tin spraying is free of infiltration and oil throwing, so the qualification rate is improved.