Penta Prisms
Penta prisms can deviate an incident beam by 90°without inverting or reversing it. The deviation angle of 90° is independent of any rotation of the prisms about an axis parallel to the line of intersection of the two reflecting faces. Penta prisms are commonly used in plumb level, Surveying, Alignment, Range finding and other Optical Tooling.
| Specifications | |||
|---|---|---|---|
| Material | BK7 Grade A Optical Glass |  |
|
| Dimension Tolerance | +0.0, -0.2mm | ||
| Clear Aperture | >80% | ||
| Flatness | λ/4@632.8nm | ||
| Surface Quality | 60-40 | ||
| 90° Deviation Tolerance | according to the table | ||
| Reflectivity | R > 95% per face @400-700 nm | ||
| Bevel | 0.2mm to 0.5mm x 45° | ||
| Coating on Input and Output Surface | Uncoated | ||
| Size(mm) | 1 Min. Deviation | 30 Sec. Deviation | 10 Sec. Deviation |
|---|---|---|---|
| A x h | Part No. | Part No. | Part No. |
| 2.5 x 2.5 | PTP1101 | PTP1201 | PTP1301 |
| 7 x 6 | PTP1102 | PTP1202 | PTP1302 |
| 10 x 10 | PTP1103 | PTP1203 | PTP1303 |
| 15 x 15 | PTP1104 | PTP1204 | PTP1304 |
| 20 x 20 | PTP1105 | PTP1205 | PTP1305 |
Note: Other sizes, material and coatings are available upon request.
