Cleaning and maintenance of Fiber laser lenses

The protective lenses in the optical system are the consumables of the laser cutting machine. In order to reduce the use cost as much as possible, the lenses should be cleaned in strict accordance with this specification. 

In the process of cleaning and replacement, the placement, testing, and installation of protective lenses should be taken care of avoiding contamination or damage to the lenses as far as possible. 

After the new lenses are installed, the protective lenses should be checked regularly and cleaned in time.

precitec windows

Take the following precautions on a daily basis: 

  1. Before removing the protective lens, make sure that the window of the protective mirror of the cutting head is clean, and no fan should blow in the direction of the cutting head, so as to avoid the airflow bringing dust into the inside of the cutting head when removing the protective lens, resulting in internal pollution.
  2.  Do not install lenses with bare fingers, wear powder-free finger covers or rubber/latex gloves. 
  3. Do not touch the film and the mirror surface when taking the lens. Squeeze the edge of the lens and place the lens on the mirror paper. 
  4. Avoid talking on top of the lens and keep all pollutants away from the working environment as far as possible.
  5. When cleaning lenses, try to operate in a dust-free environment (detergents such as anhydrous ethanol will only dissolve dirt and will not cause lens damage).

Step 1. 

Use a airbag or clean air to blow off the contaminants scattered on the surface of the lens. 

If this step fails to remove pollution, please proceed to step 2. 

Note: avoid using air pipes in the workshop, as they usually contain a lot of oil and water. 

These contaminants from harmful absorption layers on the surface of the lens. 

Step 2. 

Soak an unused cotton swab with detergents such as acetone or anhydrous ethanol, gently wipe the surface of the lens (do not rub hard), and slowly drag the wet cotton on the surface of the lens, so that the liquid left behind the wet cotton can evaporate immediately. 

No trace will be left in this way. 

If the contaminants are not removed in this step, proceed to step 3. 

Note: only use pure paper stick cotton swabs (Q-tip cotton swabs are recommended) or polyester cotton swabs, and detergents such as reagent grade acetone and anhydrous ethanol are recommended. 

Step 3. 

Soak an unused cotton swab with 6% distilled white vinegar, wipe the lens surface with slight pressure, wipe off the excess distilled vinegar with a clean dry swab, then gently wipe the lens surface with a cotton swab soaked with acetone to remove all acetic acid.For the cleaning kit you can try THORLABS.If you want to know more details you can take a look at here .

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