How to Replace the Laser Window Lens on Ray5 mini/miniS

The laser window lens is a critical optical component that protects the laser module while allowing the laser beam to pass through with precision. Over time, the lens may become scratched, dirty, or damaged, which can lead to reduced engraving quality or power loss.

Replacing the lens when necessary helps maintain optimal engraving performance and ensures consistent results.

Tools Required

• M2 hex wrench (for 10W models)
• Replacement laser window lens
• Clean workspace (to avoid dust contamination)

Step-by-Step Instructions

1. Remove the Laser Protective Cover

• For 2.5W / 3.5W / 5.5W models:
  • Directly remove the protective cover
• For 10W model:
  • Use an M2 hex wrench to loosen the screws securing the protective cover
  • Carefully remove the cover

2.5W/3.5W 

10W

2. Remove the Old Lens

• Gently unscrew the window lens by turning it counterclockwise
• Carefully take out the old lens
• Avoid touching the lens surface directly to prevent contamination

2.5W/3.5W                    10W

3. Install the New Window Lens

• Align the new lens properly with the mounting threads
• Gently screw it in by turning clockwise
• Do not overtighten—firm is enough to ensure a secure fit

4. Reinstall the Protective Cover

• Place the protective cover back onto the laser module
• Secure it using screws (for 10W models)
• Ensure everything is properly aligned and tightened

Mini:

MiniS:

Conclusion

Replacing the laser window lens is a simple yet essential maintenance procedure that helps maintain engraving clarity and laser efficiency. By following the correct steps, you can ensure your Ray5 mini/miniS continues to deliver high-quality and stable performance.

Regular inspection and timely replacement of the lens will significantly extend the lifespan of your laser module and improve overall output quality.