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Main technical difficulties of domestic UV Laser Machine II
UV laser drilling machine is based on UV laser FPC microporous group micro-processing technology, the main technical difficulties are:
Laser power stability monitoring and control
In the process of FPC blind hole UV laser machine processing, due to the instability of the power factor will cause damage to the bottom of copper, so that some or the entire circuit board scrap, increase the production cost and detection costs of PCB companies, so we need to test a stable performance of drilling performance The laser energy change area, also called the energy process window, and the wider the energy change area, the better. This is one of the important indicators to measure the performance of a device.
Optimize the design of the entire optical path, such as beam expander, beam shaper, spectroscopy method, parameter design of the field lens, and optical path debugging method, etc., to increase the width of the stable energy region, and use the motor to control the angle of the attenuator or adjust the parameters of the acousto-optic modulator. To achieve relatively stable power.
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