D27.9 × 4.1 mm Protective Lens for Fiber Laser Cutting Machine
The D27.9 × 4.1 mm Protective Lens is a premium optical protective window designed for fiber laser cutting machines. Made from high-quality fused silica with advanced anti-reflective coating, it protects the laser head from dust, smoke, and molten metal spatter while ensuring excellent laser transmission, precise cutting performance, and extended service life.
- SKU: VLT-PL-D27.9X4.1
- Category: Laser Cutting Lens
Technical Specifications
| Product Name | D27.9 × 4.1 mm Protective Lens |
| SKU | VLT-PL-D27.9X4.1 |
| Diameter | 27.9 mm |
| Thickness | 4.1 mm |
| Material | Optical Grade Fused Silica (Quartz) |
| Coating | Double-Sided Anti-Reflective (AR) Coating |
| Laser Type | Fiber Laser |
| Wavelength | 1064 nm |
| Light Transmission | ≥99.5% |
| Surface Quality | 40-20 Scratch/Dig |
| Application | Fiber Laser Cutting Machine |
| Compatibility | Raytools, WSX, BOCI, Precitec, Au3tech & Compatible Laser Heads |
| Features | High Transmission, Heat Resistant, Anti-Spatter, Long Service Life, Easy Installation |
Description
The D27.9 × 4.1 mm Protective Lens is a high-performance optical component engineered to protect the internal optics of fiber laser cutting heads from contamination caused by dust, smoke, metal spatter, and debris generated during laser cutting.
Manufactured from premium optical-grade fused silica (quartz), this protective lens features a durable double-sided anti-reflective coating that delivers excellent light transmission with minimal reflection loss. Its superior thermal stability and high laser damage threshold make it ideal for continuous industrial operation.
With a 27.9 mm diameter and 4.1 mm thickness, this lens helps maintain stable laser beam quality, improves cutting precision, and extends the lifespan of expensive laser head components. It is compatible with many leading fiber laser cutting systems, including Raytools, WSX, BOCI, Precitec, Au3tech, and other compatible laser heads.
Designed for durability and consistent performance, the D27.9 × 4.1 mm Protective Lens is an ideal replacement part for reducing maintenance costs and maximizing the efficiency of fiber laser cutting machines.
