Dne Laser Protective Lens D40* T5mm

Product Overview

Constructed from premium quartz fused silica, this lens features a 40mm diameter and 5mm thickness, engineered to withstand high-power laser environments up to 6KW. Its double-sided anti-reflection coating ensures 99.5% light transmittance at the 1064nm wavelength, minimizing energy loss and maintaining cutting precision. This lens acts as a barrier against metal splatters, dust, and debris, extending the lifespan of expensive focusing optics in industrial laser systems .

Product Features

High-Quality Quartz Material: Made from JGS1 quartz fused silica, the lens offers excellent thermal shock resistance and chemical stability, ensuring durability in harsh industrial environments .

Optical Precision: Boasts a parallelism of <1 arc minute and a surface finish of 40/20, reducing beam distortion and ensuring consistent laser performance. Diameter tolerance is tightly controlled at ±0.05mm .

Enhanced Durability: The coating features a high damage threshold of >15 J/cm², resisting laser-induced degradation even during prolonged high-power operation .

Broad Compatibility: Designed for fiber laser cutting heads from brands like Precitec, Raytools, and WSX, making it a versatile replacement part .

Product Applications

This protective lens is essential in laser processing across industries:

Metal Cutting: Used in fiber laser cutting machines processing carbon steel, stainless steel, and aluminum alloys.

Laser Welding: Protects focusing lenses in automotive and aerospace welding applications, where splatter is prevalent.

Thick Plate Processing: Ideal for high-power (4KW–6KW) laser systems cutting metal sheets thicker than 6mm.

Precision Fabrication: Ensures optical clarity in medical device and electronics manufacturing, where even minor lens damage affects product quality.

FAQ

Q: How often should the D40 T5mm lens be replaced?

A: Under normal conditions (8-hour shifts), replace every 500–800 operational hours. In dusty environments or when cutting reflective materials, reduce to 300–500 hours .

Q: Can it be cleaned and reused?

A: Minor contamination can be cleaned with isopropyl alcohol and lens tissue, but scratches or coating damage require immediate replacement to prevent energy loss.

Q: Is it compatible with 1064nm fiber lasers only?

A: Yes, it is optimized for 1064nm wavelength lasers (900–1100nm range), commonly used in fiber laser systems .

Q: What is the clear aperture of this lens?

A: The clear aperture exceeds 80% of the diameter, ensuring sufficient laser beam transmission .