A pentaprism can be used as a beam splitter by adding a wedge and partial reflection coating on the first reflecting surface. It is often used in plumb level, surveying, alignment, range finding and optical tooling.
| SPECIFICATION | |
| Material | BK7 grade A optical glass |
| Dimension (A) Tolerance | ±0.2 mm |
| Dimension (B) Tolerance | ±0.1 mm |
| Clear Aperture | >80% |
| Surface Quality | 40-20 scratch and dig |
| 90° Deviation | <30 arc sec., up to 5 arc sec. Refer to the table |
| Flatness | λ/4 @632.8 nm |
| Reflectivity | R>95% per face @630-680 nm |
| Protective Bevel | 0.25 mm x 45° |
| BK7 Beamsplitter Penta Prism | ||||
| A x B (mm) | 1 min.deviation | 30 sec.deviation | 10 sec.deviation | 5 sec.deviation |
| Part No. | Part No. | Part No. | Part No. | |
| 7 x 6 | SBP101 | SBP201 | SBP301 | SBP401 |
| 8 x 8 | SBP102 | SBP202 | SBP302 | SBP402 |
| 10 x 10 | SBP103 | SBP203 | SBP303 | SBP403 |
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