BT240 LENS

About BT240 LENS

The BT240 lens is a collimating or focusing optical lens designed for the Raytools BT240 laser cutting head. Its function is to shape and focus the laser beam so that it cuts materials like stainless steel, carbon steel, or aluminum accurately.

Key Features

• High-precision optics for stable laser beam quality

• High light transmission (99.8%) with anti-reflection coating

• High-temperature resistant fused silica material

• Long service life and durable design

• Used for laser cutting, welding, and cladding systems

Main Specifications

• Model: BT240

• Lens Diameter: 30 mm

• Material: High-purity fused silica

• Collimating Lens: F100 (100 mm focal length)

• Focusing Lens Options: F125 / F155 / F200

• Transmission: >99% light transmission

• Application: Fiber laser cutting machines (up to 34 kW power)

Function in Laser Machine

The BT240 optical system usually contains two lenses:

1. Collimating lens makes the laser beam parallel.

2. Focusing lens concentrates the beam into a small spot for cutting.

This combination improves cutting precision, speed, and edge quality in CNC fiber laser machines.