Photonics ProductsOptics & Optical FabricationOpticsPrisms & Wedges
Penta Prisms
About Lambda Research Optics Inc. (USA)- Type: Prisms & Wedges
- Diameter / Dimension: 10mm - 40mm
- Surface Flatness: < λ / 4 @ 633 nm
- Surface Quality: <40 / 20
Penta prisms are extremely useful in alignment systems as they define a right angle very precisely and independently of angle of incidence. Rays entering one face emerge from the adjacent face at precisely 90° after they have undergone two reflections inside the prism for a total of 270°. The penta prism acts as a turning mirror which is insensitive to alignment.
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