THE LASER LENS

**Core Material**: Utilizes a high-quality **quartz** substrate (fused silica), possessing an extremely 

low coefficient of thermal expansion and high thermal conductivity. It exhibits minimal deformation

 under the high-temperature irradiation of laser welding, effectively resisting thermal lensing effects 

and ensuring stable light transmission.

**Optical Design**: Specifications include a **diameter of 30mm (D30)** and a **thickness of 5mm (T5)**,

 ensuring high dimensional accuracy and compatibility with standard laser welding heads and focusing

 modules. Chamfered edges reduce the risk of installation damage.

**Coating Process**: Double-sided coating with a high damage threshold dielectric film. The **incident 

surface** features a high-reflectivity film with a reflectivity >99.5% for specific wavelengths (e.g., 1064nm),

 effectively reflecting stray light. The **exit surface** features an anti-reflection film with a transmittance >99.8%,

 maximizing laser energy utilization while ensuring operational safety.

**Applicable Scenarios**: Specifically designed for **laser welding machines**, it can be used as an internal

 protective lens or external protective window for the welding head. It can effectively block the adhesion of

 splashes and dust, while resisting radiation damage from high-power-density lasers, significantly extending

 the life of optical modules.