34 x 5mm Fibre Laser Protective Window — BOCI High-Power Fit
Genuine high-power fused silica window — the lower protective window on BOCI's high-power BLT cutting heads. 34 mm diameter x 5 mm thick, real fused silica, not soda-lime glass.
It shields your focusing and collimating lenses from back-spatter and debris — cheap insurance against an expensive lens.
Specifications
- Diameter: 34 mm — also written 34*5, D34x5, D34T5 and FS34x5
- Thickness: 5 mm
- Material: JGS1 fused silica, double-sided AR coated for 1064 nm
- Power rating: up to 20 kW
- Transmission: greater than 99.7%
Compatible cutting heads
BOCI / BOCHU: BLT421, BLT421S, BLT422, BLT441, BLT442, BLT462, BLT463, BLT482, BLT4102, BLT4122, BLT641, BLT642, BLT643, BLT663H, BLT683H, BLT6103H, BLT840H, BLT860H, BLT980MA, BLT9100MA and BLT9120MA (lower window).
Compatible machine brands
Han's high-power fibre laser machines running BOCI-pattern heads also use this window.
Not sure it fits your head? Send us your machine and head model and we'll confirm the exact window before you buy.
Shipped fast Australia-wide from our Brisbane workshop.

