The half-penta prism is formed by halving a pentaprism and is often used in telescope systems.
| Material | BK7 or upon request |
| Angle Tolerance | ±3’ |
| Dimension Tolerance | 0/-0.1mm |
| Surface Accuracy | λ/4@632.8nm |
| Surface Quality | 60/40 (S-D) |
| Clear Aperture | ˃90% |
| Bevelling | 0.2±45° |
| Coating | AR/BBAR |
| Paint | GT-7 or upon request |
