Requirements
Product | Specification/mm |
N31 Glass | φ25×256 mm |
Process Indicators
- Glass Type: N31
- Diameter: 25.0 (+0/-0.05) mm
- Length: 256 (±2) mm
- Doping: 1.0 wt.%
- Wedge ends: 2.0° ± 5 arc-min
- End parallelism: ≤ 1 arc-min
- Chamfer: 0.25-0.75 mm face width at 45 (±15) degrees
- Clear aperture: 22.5 mm
- Surface flatness: ≤λ/4 @ 633 nm
- Surface quality: ≤10/5 scratch/dig
- Barrel finish: fine ground, 30 μm grit size
- Transmitted wavefront: ≤ λ/6 P-V @ 633 nm with gradient ≤λ/10/cm
- Coating: AR/AR R<0.25% @ 1053 nm, 0°, damage > 7 J/cm2 for 1 ns @ 1053 nm
Pictures
