Specifications: | |
Material: | N-BK7, Fused silica or other optical glass |
Dimension Tolerance: | +0.0, -0.2mm |
Surface quality: | 60-40 S/D |
Surface flatness: | λ/4 @ 632.8nm |
Angle Tolerance: | ±30 arc sec(Standard); ±5 arc sec(High Precision) |
Clear Aperture: | >85% of dimension |
Bevel: | <0.25mm×45° |
Coating: | Surfaces S1 & S2 :Single layer MgF2 coating |
Surfaces S3 & S4: Aluminized and painted black |