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Right Angle Prisms
Right Angle Prisms
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A Rigth-Angle Prism is used as a mirror to deviate light through 90 degree, and also as a retroreflector to deflect light through 180 degree by total internal reflection.
90° Deflection:
180° DeflectionCapability:
| Attribute | Commercial | High Precision |
| Material | BK7, Fused Silica, CaF2 | |
| Dimension Tolerance | +0.0/-0.2mm | +0.0/-0.1mm |
| Surface Quality | 60/40 scratch and dig | 20/10 scratch and dig |
| 90° Deviation | < 30 arc seconds | <5 arc second |
| Surface Flatness | λ/2 @632.8nm | λ/8 @632.8nm |
| Clear Aperture | > 80% | > 90 |
| Protective Beve | <0.25mm x 45° | <0.1mm x 45 |
Note: Custom sizes and wavelength range are available upon request.