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7 ways to adjust the optical path of laser marking machine


In the use of fiber laser marking machine, sometimes the light path is not straight or the light path is uncontrolled and distorted. Below, I will share with you how the operator or repairer should solve this situation.

1. Fix the transmitter head of the fiber laser. You don't need to fix it first. Use the infrared light up-converter to see if the laser is pointing to the center of the light entrance hole of the galvanometer. If not, please continue to sell and adjust the fiber laser transmitter head until the light spot enters the center of the galvanometer entrance hole, and fix the laser transmitter head.




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2. Adjust the height of the galvanometer x. The goal is to make the center of the X galvanometer mirror coincide with the fiber laser spot, and fix the galvanometer x. Note that the direction of rotation of the galvanometer X at this time is approximately: the reflective surface X lens and The light path is incident at about 45 degrees.


3. Adjust the lift of the galvanometer Y so that the center of the galvanometer Y lens coincides with the center of the field lens, and fix the galvanometer y. At this time, the direction of the galvanometer Y rotation is approximately: the reflective surface Y lens and the center of the field lens. The horizontal plane is about 45 degrees.




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4. Use the dot ring field lens center tester, and put a frequency doubler on the center point of the tester. After the light is emitted, adjust the galvanometer x so that the green light point runs to the coaxial line of the center point of the tester.

5. Adjust the galvanometer y so that the green light spot runs to the coaxial line of the center point of the tester. At this time, the non-green light spot runs into the center point of the tester.

6. After installing the field mirror, the optical path adjustment of the fiber laser marking machine is completed. This adjustment is very simple. It can be seen from these methods that the fiber laser marking machine is easy to maintain and can be trouble-free for 100,000 hours. Good guarantee.


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7. After the above adjustments are complete, install the Q switch, put the frequency multiplier between the front mirror and the beam expander, and then use the switch Q drive to observe whether the Q switch lock is normal, and check whether there is light leakage. If there is light leakage, adjust the Q position. After adjustment, increase the laser power current to observe whether there is light leakage in the fiber laser marking machine until it does not leak light at all.

Note: Do not turn the four knobs on the front and rear mirror frames too fast or too large. Make sure to adjust them slowly, otherwise it will be easy to lose the light spot and make it difficult to find. When the whole adjustment is done In the future, it is necessary to adjust the locking screw in time, fix it and lock it tightly, so as not to change the light path or malfunction due to vibration during the operation of the equipment.

CARMAN HAAS is china Fiber Laser Marking machines manufacturer, provides a variety of Laser Marking machines and optical lenses, Welcome to contact us.