Aluminum Coated Bending Prisms (ALP)
- 90° reflectors
- TIR or protected Aluminum coating
Right angle bending prisms work effectively by total internal reflection. They are anti-reflection coated on the legs. Optionally, the hypotenuse may be coated with second-surface aluminum protected by black sealing paint to ensure grazing incidence reflection. These prisms are suitable for optical delay lines and for high power use.
| Surface Flatness: | <λ / 8 @ 633 nm |
| Surface Quality: | <20 / 10 |
| Dimension Tolerance: | <+ 0.00 / - 0.20 mm |
| Angle Tolerance: | <3 arc sec |
| Perpendicularity: | <5 arc min |
| Clear Aperture: | >85% in central circular dimension |
| Bevel: | 0.3 mm (typical) x 45° |
| Anti-reflection Coating: | R<0.25% (typical) on both legs |
