Optical Windows with golden coating
Protected gold is effective for applications requiring high reflectance in the near-infrared and infrared regions. Since a durable coating is necessary for handling purposes. The performance of gold (96% reflectivity from 750nm-1500nm) is maintained, while providing a more durable finish.

Material:                        BK7 optical glass or fused silica
Diameter Tolerance:     +0.0/-0.02mm
Thickness Tolerance:    ± 0.01mm
Surface Accuracy:        λ/4 @632.8nm
Surface Quality:           20-10
Clear Aperture:            > 90%
Bevel:                          0.2mm×45°
Coating:                      Coating with golden