Our BK7 or Fused Silica windows are available with improved surface quality and parallelism. Furthermore, these windows will limit the transmitted wavefront distortion to 1/10 wave. BK7 windows are used for visible and near IR. Fused Silica windows are not only used for UV but also used as heat-resistant windows in800°C.The superior transmission characteristics and excellent thermal properties combined with high tolerance manufacturing specifications make these windows a suitable choice for more demanding applications.
Item
Specifications
Material
N-BK7; Fused Silica or others
Dimension X×Y(φ)
1×1mm~100×100mm；φ1~φ100mm
Dimension tolerance
Thickness≤±0.001mm
Parallelism
＜3 seconds
Clear Aperture
85%
Surface Quality
MIL40-20
Flatness(per 10mm)
λ/10@632.8nm
Coating
Specified by customer