The Mantainence Of The Fiber Laser Device’s Lenses

The mantainence of the fiber laser device’s lenses

1. Lens replacement.

Replaceable components should be equipped in the dust-free plant. In principle, the modules of the optical lens can’t be assembled or disassembled except the drawer of protective lens. If you have to check the collimating lens, focusing lens and galvanometer lens, please disassemble them in the clean environment.

2. Cleaning of optical lens

Operating method and cautions:

Tool: dust-free gloves or dust-free fingertips, dust-free cotton swab, isopropyl alcohol and canned dry pure compressed air.

Spray the isopropyl alcohol onto the dust-free cotton swab, make the lens face your eyes, gently pinch the side edge of the lens with the thumb and forefinger of your left hand, wipe the front and back of the lens in one direction from left to right or from top to bottom with dust-free cotton swab held in the right hand ( remember not to wipe the lens back and forth to avoid the second contamination), and blow the surface of the lens with dry pure compressed air to ensure there is no dust on the lens.

3. Disassembly of optical lens

(1) . Disassembly of collimating lens

Tool: 2mm inner hexagon wrench, special fixture wrench, clean cotton swab, and alcohol.

The disassembly of lens should be operated with hand wearing dust-free gloves or fingertips in clean environment.

Step 1: remove all the dust on the surface of laser head

Step 2: loosen the 3-M4*6 set screw in the figure with a 2mm inner hexagon wrench.

Step 3: take out QBH module and seal the port with masking tape to stop the entry of dust into the cavity.

Step 4: use the special fixture for the disassembly of lens cone, rotate counterclockwise to loosen the locking spring ring and slowly take out the welding head download. Seal the port with masking tape to stop the entry into the cavity of dust. Change the collimating lens. (Pay attention to the position and thickness of washer because it will impact the light path. After disassembly, take a record of the thickness and size of the washer.

4. Disassembly of focusing lens

Tool: 2mm inner hexagon wrench, clean cotton swab, alcohol, and masking tape

The assembly and disassembly of the lens should be operated with hands wearing dust-free gloves or fingertips in a clean environment.

Step 1: loosen the M4 screw with a 2mm inner hexagon wrench.

Step 2: pull out of the focusing module horizontally

Step 3: seal the port with masking tape to stop dust from entering the cavity to cause contamination.

Step 4: the cover is gently pressed down and rotated 90°.Align the two convex places with the left and right openings. Take out the cover upward and the protective lens can be changed.

(Note: install lens is concave and convex direction.)

5. Disassembly of protective lens

The assembly and disassembly of the lens should be operated with hands wearing dust-free gloves or fingertips in a clean environment.

Change protective lens 01:

Step 1: hold both sides of the green drawer handle module 1 in hand and pull out the protective lens horizontally. Take care of the dust, seal the port exposed to the cavity with masking tape to stop the entry of dust into the cavity, and replace the protective glass.

Step 2: the cover is gently pressed down and rotated 90°. Loosen it when the two sides align with the two notches. Take out the cover and change the protective lens.

Change protective lens 02:

Step 1: take out the green drawer handle module 1 and pull out the protective lens horizontally. Take care of the dust, seal the port exposed to the cavity with masking tape to stop the entry of dust into the cavity, and replace the protective glass.

Step 2: the cover is gently pressed down and rotated 90°. Loosen it when the two sides align with the two notches. Take out the cover and change the protective lens.