Protective Window / PG-21

Protective windows can be attached to the focusing lens to minimize damage from laser fabrication. The protective window comes in 3 different sizes.
Window Holders (PGH)

Visible Spectrum Achromats
YAG Laser Focusing Lenses
In stock
Only 4 left
Part Number
More Information
Catalog Code W3081
RoHS Yes
Download Product's Datasheet
Guide ▶Since protective windows are uncoated, surface reflections will reduce transmittance to 90%.
▶Anti-reflection coating for specific wavelength are available to improve transmittance, please contact our Sales Division for assistance.
▶Replace protective window if it is damaged or there is poor transmittance performance.
Diameter φDφ21mm
Protective window retainerPGH-24