Prisms
PhotonExport supplies quality optical prisms for all use-cases. High precision grade prisms are available with the tightest tolerances. For a wider range of uses or markets, our commercial grade prisms also offer a full complement of prism shapes and geometry available by custom order.
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Prisms Specification
| Commercial | Precision | High Precision | |
| Dimensions | 10 -200mm | 10 – 150mm | 10 – 150mm |
| Dimensional Tolerance | ±0.25mm | ±0.1mm | ±0.05mm |
| Irregularity (P-V) | ΔN=1 | ΔN=0.5 | ΔN=0.3 |
| Angle Accuracy | ±3 arcmin | ±30 arcsec | ±1 arcsec |
| Pyramidal Accuracy | ±3 arcmin | ±1 arcmin | ±5 arcsec |
| Bevel (Face Width @ 45°) | ±0.2mm | ±0.1mm | ±0.05mm |
| Surface Quality | 60-40 | 40-20 | 10-05 |
Prisms Coating Capabilities
| Substrates | All Glass Types |
| Spectral Ranges | 300～3000nm |
| Spectral Edge Tolerance | <1% Deviation, <0.2% Special Cases |
| Bandwidth | 1nm – Broadband |
| AR Coating Transmission | >99% |
| Reflection | 0.1 – 99.9% |
| Polarisation (S:P) | 10000:1 |
| Laser Damage Threshold | Up to 20 J/cm2 @ 20ns Pulses |
| Durability | MIL-STD-810F, Section 507.4; MIL-C-48497A, Section 3.4.1 |