The Protective Lens is one of the most critical protective components inside the Laser Module.
It blocks smoke, debris, and hot air from entering the module, preventing contamination or damage to the Focusing Lens.
- Focusing Lens: Installed inside the module, it concentrates the laser beam into a fine spot, enhancing cutting depth and engraving precision. It is one of the core optical components of the laser module.
- Nozzle: Located at the outermost end of the Laser Emission Port, usually cone- or cylinder-shaped with a small outlet hole. It focuses the airflow to blow away smoke and debris, while minimizing dust entering the module.
- Protective Lens: Positioned between the Nozzle and the Focusing Lens, typically a small circular glass piece. Its purpose is to block smoke and debris from entering the module, protecting the Focusing Lens from contamination or damage.
The protective lens can be replaced independently for easier maintenance and lower cost.
During regular use, the protective lens may develop burn marks or cracks caused by laser heat, debris impact, or long-term exposure to high temperatures, requiring cleaning or replacement.
¶ 1. Common Causes of Damage
- Laser Burn: Dust buildup or extended high-power operation causing local overheating.
- Debris Impact: Fragments from reflective or hard materials striking the lens surface.
- Improper Handling: Using inappropriate cleaning tools or applying excessive force, leading to scratches.
- Aging: Over time, the sealing ring deteriorates, allowing dust to contaminate the lens.
¶ 2. Preparation Before Replacement
- Required Items: A new protective lens.
- Working Environment: Ensure the workspace is dust-free and dry. Avoid airflow that might blow dust into the module.
¶ 3. Replacement Steps
¶ Step 1: Remove the Installed Laser Module
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Disconnect the Air Pump Tube and the laser module connector in sequence. |
Pull down the locking handle, then gently lift the Laser Module from the mounting slot. |
¶ Step 2: Remove the Protective Lens
- Detach the Nozzle first, then unscrew the Protective Lens.
¶ Step 3: Install the New Protective Lens and Nozzle
- Quickly screw in a clean, intact Protective Lens, then attach the Nozzle securely back onto the laser module.
All lens assemblies are installed in a dust-free factory environment before shipping.
Therefore, when replacing the lens, users should simulate a clean environment as closely as possible to prevent dust contamination of the Focusing Lens, ensuring stable laser performance and longer lifespan.
¶ Step 4: Reinstall the Laser Module
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Place the Laser Module back onto the mounting slider and lift the handle upward to lock it securely. |
Reconnect the Laser Module Cable, then reattach the Air Pump Tube. |