Ultra Precision Nanoscale
Optical Elements Customized Expert
| Roof Prism Technical Indicators | |
| First and second Parallel Difference | θⅠ=θⅡ=30″to 3′ |
| Roof Angle Error | 90°±1″to 90°±3″ |
| Surface Accuracy | better than λ/8 |
| Surface Quality | Ⅳ |
