| Products -> Prism -> Custom Prism |
| Union Optic not only provides common used prisms, we can also provide custom prism and prism assembly. We can provide prototypes quickly in good quality and reasonable price, volume production can also be done by Union Optic. The most used material for prism includes BK7, UV grade fused silica, SF11 glass. While, other materials can also be provided upon request. Following is our manufacturing limits. |  |
| Parameter | Manufacturing Limit |
| Dimension Tolerance | ±0.05mm |
| Parallelism | <5 arc seconds |
| Angle Tolerance | <10 arc seconds |
| Roof Angle Tolerance | <3 arc seconds |
| Surface Quality | 20/10 scratch and dig |
| Flatness | <λ/20@632.8nm |