Rhombic Prisms
Rhombic prism can displace a laser beam without change the image orientation, the input beam is totally internal reflected by two 45degree faces and goes out from the output face. Then, a lateral displacement is produced. Higher transmission rate can be achieved by anti-reflective coating on the input and output faces. Rhombic prism is always used in stereoscopic system and periscope system. Currently we can make angle tolerance< 5 arc seconds, total beam deviation < 30 arc seconds. Large size is also available.
Specifications
| Dimension Tolerance | ± 0.2 mm |
| Surface Quality | 60/40 |
| Clear Aperture | > 90% |
| Flatness | < λ/4@632.8 nm |
| Beam Deviation | Up to 30 arc seconds |
| Coating | None. Upon request. |
Model
| A, mm | B, mm | C, mm | Deviation | Material |
| 3.54 7.07 10 8.98 14.14 17.96 | 5 10 10 12.7 20 25.4 | 7.07 14.14 14.11 7.96 28.28 35.92 | < 30 arc seconds | H-K9L |
| 7.07 | 10 | 14.14 | UVFS | |
| 12 | 12 | 24 |