90° Prisms
A Right-Angle Prism is used as a mirror to deviate light through 90 degree, and also as a retro reflector to deflect light through 180 degree by total internal reflection.
90-Degree Deflection
90-degree deflection occurs at the hypotenuse face. The image is erected and reversed.
180-Degree Deflection
180 degree deflection uses the hypotenuse as entrance and exit surface.
Standard 90° Prisms
|
Dimension Tolerance: |
+0.0/-0.2 mm |
| Clear Aperture: |
> 80% |
| Angle Tolerance: |
see table |
| Flatness: |
λ/2 @ 632.8 nm |
| Surface Quality: |
60-40 scratch and dig |
| Bevel: |
0.2 mm to 0.5 mm |
Size (A x B x C) mm |
Material |
Deviation (Alternatives) |
|||
| 5.0 x 5.0 x 5.0 |
BK-7 | 3 min. | 1 min. | 30 sec. | |
| 10.0 x 10.0 x 10.0 |
BK-7 | 3 min. | 1 min. | 30 sec. | |
| 12.7 x 12.7 x 12.7 |
BK-7, Fused Silica |
3 min. | 1 min. | 30 sec. | |
| 15.0 x 15.0 x 15.0 |
BK-7 | 3 min. | 1 min. | 30 sec. | |
| 20.0 x 20.0 x 20.0 |
BK-7 | 3 min. | 1 min. | 30 sec. | |
| 25.4 x 25.4 x 25.4 |
BK-7, Fused Silica | 3 min. | 1 min. | 30 sec. | |
| 30.0 x 30.0 x 30.0 |
BK-7 | 3 min. | 1 min. | 30 sec. | |
| 40.0 x 40.0 x 40.0 |
BK-7 | 3 min. | 1 min. | 30 sec. | |
| 50.0 x 50.8 x 50.8 |
BK-7 | 3 min. | 1 min. | 30 sec. | |
Any other size (starting from 0.5 mm) or other tolerances are available on request.
For AR coating please specify wavelength.
We also supply 90° prisms in laser grade quality and Penta prisms, dispersion prisms, Pellin-Broca prisms, beam splitter prisms, Dove prisms, corner cube reflectors and wedge prisms.
If you need a special prism, please send us your specification and we will work out a quotation very soon.
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