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CO2 laser lens 20mm F2.5in/63.5mm focal lens for CO2 engravers

CNCOLETECH ★ 4.0/5 · ItemOracle Score Budget

$31 USD
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CO2 Laser Lens 20mm FL:2.5" or 63.5mm Laser Mirror CVD ZnSe Focus Focal Lens for CO2 Laser Engraving Cutting Engraver/Cutter 40W-200W

CVD ZnSe laser lens for CO2 systems, 20mm diameter with 63.5mm focal length, compatible with 40W–200W. High transmittance and durable coating support stable performance. One customer notes good focus, others mention fit may vary

Highlights

  • high transmittance ZnSe lens
  • broad power compatibility (40–200W)
  • coated for extended service life

Pros

  • high transmittance 99.8%
  • CVD ZnSe material for stability
  • supports 40W–200W operation
  • double-sided solid coating for longevity
  • polished and precision coated

Cons

  • fit can be inconsistent for some setups
  • durability concerns raised by one customer
  • reported melting/burning under certain conditions

Best For

  • laser engraving on jewelry
  • laser cutting with CO2 systems
  • drop-in replacement for compatible 40W lasers
  • focus optimization for CO2 engravers
  • polishing and grinding process aids

Features

  • CVD ZnSe material provides stable laser performance for 40W-200W systems
  • 20mm diameter, 63.5mm focal length, 2.0–2.2mm thickness, 99.8% transmittance
  • double-sided solid coating enhances durability and reduces laser loss
  • high-temperature resistance and wipe-resistant surface for longer service life
  • polished and ground to precise tolerances for improved optical properties

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