Representative image. Final geometry, finish and coating are confirmed from your drawing.
Reference · TO-PEN
Penta Prism
Prisms
A five-sided prism that deviates a beam by a constant 90° without image inversion, with coated reflecting faces.
Typical values
| Parameter | Reference |
|---|---|
| Material | N-BK7 / UV fused silica |
| Dimension tolerance | ±0.2 mm |
| Surface quality | 60/40 standard; 40/20 by review |
| Clear aperture | >90% |
| Flatness | <λ/4 @ 632.8 nm |
| Angle tolerance | <30 arcsec |
| Chamfer | <0.5 mm × 45° |
| Coating | Protected aluminum, MgF2 AR or custom |
Use this table to understand what is routine, what is reviewed against a drawing and where the project needs a different route.
| Parameter | Standard | By drawing review | Notes |
|---|---|---|---|
| Material | N-BK7 / UVFS | Other optical glasses | — |
| Surface quality | 60/40 | 40/20 | — |
| Flatness | <λ/4 | Better than λ/4 | — |
| Angle tolerance | <30 arcsec | Tighter tolerance | — |
| Coating | Protected aluminum / MgF2 AR | Custom dielectric stack | — |
A penta prism keeps the 90° deviation stable when the prism is rotated about the optical axis, which makes it useful in alignment and metrology. Specify the entrance and exit apertures, deviation tolerance and coating on the two reflecting faces.
- Alignment systems
- Metrology
- Beam routing
- Constant 90° deviation
- N-BK7 / UVFS
- Protected metal or dielectric coating
- Custom apertures
What to include in the RFQ
The following inputs let us quote the geometry, coating and inspection route without guessing.
Request a quote for this component- 01Drawing with aperture, orientation and deviation requirement
- 02Material and wavelength band
- 03Reflecting-face coating and environmental exposure
- 04Angle and flatness inspection method
- 05Quantity
TO-RAP
Right-Angle Prism
A 90° beam-steering prism with optional hypotenuse coating, supplied in N-BK7, UV fused silica or other optical glass.
View specification
TO-WDG
Wedge Prism
A small-angle prism for beam steering, wavefront correction and fringe generation, with custom wedge angle and coating.
View specification
TO-CCR
Corner-Cube Retroreflector
A three-face retroreflector that returns an incoming beam parallel to itself, quoted from the angle budget and mounting requirement.
View specification