The roof prism deviates or deflects the image through an angle of 90 degrees. Basically, the roof prism is a right-angle prism whose hypotenuse has been replaced by a 90-degree total internal reflection roof.
| Parameter | Value Specified and Torlerrance | AQL | Meterage outcome | ||||
| Length/Diameter (L/D) | Customized | AQL1.0 | |||||
| Width (W) | Customized | AQL1.0 | |||||
| Thickness (T) | Customized | AQL1.0 | |||||
| Surface Accuracy (N/ΔN) | Customized | AQL1.0 | |||||
| Surface Quality(S/D) | Customized | 100% | |||||
| Clear Aperture (CA) | Customized | 100% | |||||
| Chamfer/Corner | Customized | 100% | |||||
| Chips | Customized | 100% | |||||
| Angle Tolerance | Customized | AQL1.0 | |||||
| Coating | Customized | ||||||
| Durability of coating layer | Customized | ||||||
| Remarks: | |||||||
| Inspector: | Date: | Inspector: | Date: | ||||
