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title: Catalog RFQ Penta Prisms
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[![Ross Optical](https://custom-optics.rossoptical.com/hs-fs/hubfs/Ross-POCI-Logo-Horizontal.png?width=200&height=86&name=Ross-POCI-Logo-Horizontal.png "Ross Optical")](https://www.rossoptical.com)

# Penta Prisms

A five-sided prism containing two reflecting surfaces at 45° to each other, and two perpendicular faces for the entering and emerging beams. It does not invert nor revert the image.

| Material | BK7 |  |
| --- | --- | --- |
| Dimensions | MM |  |
| Dimensional Tolerance | ±0.10 mm |  |
| Surface Accuracy |   |  |
|   | Standard | 1/2 Wave |
|   | Precision | 1/4 wave |
| Angle Tolerance |   |  |
|   | Standard | ±3 arc minutes |
|   | Precision | ± 10 seconds |
| Bevel | 0.2mm x 45° |  |
| Coating | Reflecting surfaces are Protected Aluminum. Entrance and exit surfaces are coated with 1/4 wave MgF2) |  |
| ** All dimensions are in mm* |  |  |