Laser protective lenses are also called laser window lenses. Laser dust-proof lenses are mainly used to block debris splash during laser cutting, welding, marking, and engraving, and prevent splashes from damaging the focusing lens. Both sides are coated with anti-reflection coating with high laser damage threshold (>15J/cm2) to reduce reflection.
Specifications：
| Materials | K9、silica（JGS1/JGS2） | Tolerance | -0.1mm |
| Appearance | round | Parallelism | Normal≤30″ High precision：≤2″ Ultra High：≤0.5″ |
| Size | Dia 20~55mm | Transmit wavefront distortion | <λ/25mm @632.8nm |
| Thickness | 1~5mm | Damage Threshold | >15J/cm2，20ns，20Hz@1064nm |
| AIC | 0° | Surface Quality | 40-20/60-40 |
| Aperture | 100% | Bevel | 0.2~0.5X45° |
| Environmental testing | MIL-STD-810F | Coating | 1064±20nm@Tave＞99.9% |
Regular size:
The conventional sizes of laser protection windows are: diameter mm 25, 27, 30, 38, 39, 40, 48, 50, 55, 75, 78, 123, etc.).
Other specifications can be customized.
Features of our products:
- Ultra-thin lenses, coated with light-transmitting film on both sides (the light transmittance reaches 99.85%, and you can feel that the welding strength is significantly enhanced)
- Wavelength 1064 can be suitable for any YAG wavelength 1064 laser welding machine
- The material is made of K9 crystal material, which has been processed by “chemical tempering” with exclusive technology (higher hardness, guaranteed to be without damage if dropped vertically from a height of 0.8 meters, and durable and resistant to high temperatures)
- The laser protection windows are all made of imported crystal materials through cutting, grinding, polishing, coating and other processes.
Application fields: widely used in laser cutting, welding, marking and other applications