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How do we generally deal with the problem of light leakage in the fiber laser marking machine?

by:Leadtech Coding     2021-11-17

Generally speaking, there are two aspects of light leakage in fiber laser marking machines. The first aspect is about the problem of acousto-optic modulation, and the second is caused by the confusion of the light signal given by the marking card.

How do we determine the above two aspects? The general judgment method is as follows: If the fiber laser marking machine always has light leakage, such as when there is no marking, or there is light leakage during marking, then this is the problem of acousto-optic modulation.

The second is that if there is light leakage and wrong marking during the marking process, and the light leakage and wrong marking points are regular, then this situation is a problem with the laser marking card.

The treatment method for the light leakage of the fiber laser marking machine is as follows:

1. Check whether the laser resonant cavity has changed, and fine-tune the resonator lens to ensure that the output light spot reaches Ideal state.

2, measure whether the laser entering the galvanometer is off-center, and adjust the laser;

3, check the acousto-optic crystal deviation or the output energy of the acousto-optic power supply Whether it is too low, adjust the position of the acousto-optic crystal or increase the working current of the acousto-optic power supply;

4. If the current is adjusted to about 20A and the sensitivity is not strong enough, it proves that the krypton lamp is aging, and a new lamp is urgently needed.


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