FOCUS BOSI BLT 421

About FOCUS BOSI BLT 421

The BLT-421 lens is part of the BOCI BLT series laser cutting heads, commonly used in high-power fiber laser machines. The lens helps concentrate the laser beam to a very small point, which increases cutting precision and efficiency.

Key Features

• High optical quality quartz or fused silica lens

• Anti-reflection coating for fiber laser wavelengths (usually 1064 nm)

• High temperature resistance for continuous laser operation

• High transmission rate to reduce power loss

• Designed for high-power lasers (often up to 15kW or more depending on configuration)

Typical Specifications

• Lens Type: Protective / focusing lens

• Material: Optical quartz (fused silica)

• Diameter: Often around 37 mm (like the one in your image: D37)

• Thickness: Usually 7 mm

• Application: Fiber laser cutting heads such as BLT421

Applications

• Fiber laser cutting machines

• Metal sheet cutting (stainless steel, carbon steel, aluminum, brass)

• Industrial laser processing systems