|
Summary of Manufacturing Tolerances |
||
| Feature | Standard Quality | Precision Quality |
| Center Thickness | +/- 0.025 mm | +/- 0.012 mm |
| Diameter | +0 / - 0.030 mm | +0 / - 0.010 mm |
|
Surface Deviation Power - Irregularity |
5 - 2 Fringes | 3 - 1/2 Fringes |
| ETD (Wedge) | 0.05 mm | 0.01 mm |
| Axis Alignment | 5 Minutes | 2.5 Minutes |
| Scratch - Dig | 60 - 40 | 20 - 10 |
| AR Coating |
Single Layer R< 1.5% per side* |
Multi Layer R< 0.5% per side* |
| Index of Refraction (nd) | + / - 0.001 | + / - 0.0003 |
| Abbe Number (vd) | +/- .8% | +/- .5% |
| Sag | +/- 0.015 mm | +/- 0.010 mm |
| * Minimum value for design wavelength | ||