Right angle prisms can totally reflect a beam of light to 90 degrees or 180 degrees. K9 (BK7) can be applied to optical systems from visible to infrared, and fused silica is applied to various optical systems from ultraviolet to infrared.
| Material | H-K9L or upon request |
| Angle Tolerance | 90°±3’ , 180°±5’ |
| Dimension Tolerance | 0/-0.1 |
| Surface Accuracy | λ/4 |
| Surface Quality | 60/40 (S-D) |
| Clear Aperture | ˃90% |
| Bevelling | 0.2±45° |
| Coating | AR/BBAR |
| Paint | GT-7 or upon request |
