BOCHU BOCI Upper Protective Lens

BOCHU BOCI upper protective lenses are grouped here for the upper protective-window position in compatible BLT fiber laser cutting heads. Use the exact product dimensions, part number and stated variant limit shown on the product page; an upper lens is position-specific and should not be treated as interchangeable with a second-upper or lower lens. If the required position is second-upper, see 2nd-Upper Protective Lens.

Available Upper Protective Lens Sizes

This collection includes BOCHU BOCI upper protective lenses for BLT fiber laser cutting heads. Available configurations include D21.5 × 2 mm, D25.4 × 4 mm and D36 × 5 mm windows, with different power ranges and model-specific BOCHU part numbers. These lenses protect the internal optical assembly from dust and contamination.

How to Select an Upper Protective Lens

Match the diameter, thickness, upper-window position, laser power range and original part number shown on the existing package. Protective lenses with similar diameters may use different thicknesses or applications. Provide a photo of the lens label or cutting-head nameplate when the correct specification is uncertain.