Penta Prism from Casix
Penta Prism from Casix
The deviation angle of 90 degrees is independent of the orientation of the prism, making it especially important in applications in which the prism orientation cannot be precisely controlled. Due to a geometry where total internal reflection cannot be used, the reflecting surfaces must be coated with a metallic or dielectric coating. The standard penta prism reflecting surfaces are coated dielectric coating. Coated surfaces can be painted black
Capability
| Attribute | Commercial | High Precision |
|---|---|---|
| Material | N-BK7 / H-K9L | |
| Dimension Tolerance | ±0.2mm | ±0.1mm |
| 90° Deviation Tolerance | <30 arc seconds | <2 arc seconds |
| 180° Deviation Tolerance | <20 arc seconds | <5 arc seconds |
| Flatness Precision Series | <λ/4 at 632.8nm | <λ/8 at 632.8nm |
| Reflectivity | R>95%@630-680nm | R>99.5%@630-680nm |
| Surface Quality | 60-40 scratch and dig | 40-20 scratch and dig |
| Beamsplitter Ratio
Transmission/Reflection |
T/R=20/80+/-5%@630-680nm | Specify |
Beam steering
Retro-reflection
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Photonic Solutions Ltd
Unit 2.2 Quantum Court
Heriot-Watt University Research Park
Edinburgh
EH14 4AP
