BM109 SERIES 1.5KW Auto-Focusing Laser Cutting Heads
5.2 Removal and Installation of Lenses
The whole process needs to be completed in a clean place. Wear dust-proof gloves or fingertips when
removing or installing the lenses.
5.2.1 Removal and Installation of Protective Lenses
The protective lens are a fragile part and need to be replaced after damage.
As shown in Figure 6.2, open the buckle, open the cover of protective lens, pinch the two sides
of the drawer-type lens holder and pull out the base of protective lens;
Remove the pressing ring of the protective lens , remove the lens after wearing fingertips;
Clean the lens, lens holder and seal ring. The elastic seal ring should be replaced if damaged;
Install the new cleaned lens (regardless of the positive or negative sides) into the drawer type
lens holder.
Put the pressing ring of the protective lens back.
Insert the protective lens holder back to the laser processing head, cover the lid of the protective
lens and fasten the buckle.
pressing ring
protective lens
protective lens holder
Figure 6.2 - structure of protective lens
5.2.2 Removal and Installation of Collimating Protective Glasses
The collimating protective lenses are a fragile part and need to be replaced after damage.
Use a 3 mm inner hexagon spanner to unscrew the screw of collimating protective lens (as shown in
Figure 6.3);
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