Concave BK7 or UV Fused Silica mirror blanks
These plano-concave BK7 or UV Fused Silica mirror blanks are polished to λ / 10 surface accuracy with a laser grade finish on both sides. Select a coating appropriate to your application or contact us with your special coating requirements.
| Material: | BK7A UV Grade Fused Silica |
| Surface Flatness: | < λ / 10 @ 633 nm |
| Surface Quality: | <10/5 (both sides) |
| Centration Error: | < 3 arc min |
| Radius Tolerance: | < ± 0.5% |
| Diameter Tolerance: | < + 0.00 / – 0.20 mm |
| Edge Thickness: | < ± 0.25 mm |
| Clear Aperture: | >85% of diameter |
| Dimension | 0.5" dia x 0.25" et, 0.75" dia x 0.25" et, 1.0" dia x 0.25" et, 1.5" dia x 10.50 mm et, 1.5" Dia x 0.25" et, 2.0" dia x 0.375" t, 2.0" dia x 0.25" et |
|---|---|
| Material | UV Grade Fused Silica, BK7 Grade A |
| Radius | 025 mm, 050 mm, 075 mm, 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, 400 mm, 500 mm, 750 mm, 1000 mm, 2000 mm, 3000 mm, 4000 mm, 5000 mm, 7500 mm, 10000 mm |
Plano Concave Lens – IR Grade CaF2 (PCC) 
