Precitec Protective Lens – D22.35 x T1.5 mm
A laser protective lens (protective window) is a sacrificial consumable mounted in the cutting head. It shields the expensive focusing and collimating optics from spatter, smoke, dust and high-pressure assist gas, keeping beam quality and cut consistency stable while cutting the cost of head maintenance.
Upper (collimation) window for ProCutter heads.
Key features
- High-purity fused silica substrate with double-sided AR coating for 1064 nm
- Transmittance above 99.5% and a coating damage threshold over 15 J/cm2
- Precision-ground diameter and thickness for a play-free fit in the drawer
- Low absorption to limit thermal focus shift at high power
- Individually packed and inspected; drop-in replacement for OEM part numbers
Specifications
| Brand | Precitec |
| Product type | Protective lens |
| Size | D22.35 x T1.5 mm |
| Wavelength | 1064 nm (900-1100 nm) |
| Coating | Double-sided AR |
| Packing | 1 pc / individual pack |
Material: high-purity fused silica (quartz), double-sided AR coating
Wavelength: 1064 nm (900-1100 nm)
Transmittance: > 99.5%
Surface quality: 20/10 (scratch-dig)
Coating damage threshold: > 15 J/cm2
Shape: round / planar, bevelled edge
Compatibility
Designed for Precitec laser cutting heads that use this exact window size. Upper (collimation) window for ProCutter heads. If your head has been upgraded or you are unsure, cross-reference the OEM part number or send us a photo of the old part and we will confirm before you order.
Installation & maintenance
- Upper (collimation) window: protects the collimating lens, replaced with the drawer cartridge.
- Lower (focus / process) window: the first barrier against spatter, replaced most often.
- Inspect every shift; replace at once on pitting, burn marks, haze, cracks or a sudden drop in cut quality.
- Handle by the edge only, clean with lint-free swabs and ethanol, and never wipe dry debris across the surface.
Why buy from us
- Factory-direct laser consumables with batch inspection
- Stock of the sizes used most on fibre laser cutters, ready to ship
- Volume pricing and mixed cartons for OEMs and service partners
- Technical support to match the part to your cutting head
Not sure which size fits your head? Send us the head model, the OEM part number or a photo of the old part and we will confirm the correct item before you order.