Features a 90° roof surface to revert and erect images simultaneously. These are essential for binoculars and telescopes requiring a corrected image orientation.
Diameter: 5 mm- 300 mm ±0.1 mm
Surface Accuracy: λ/ 8 @
Center Thickness Tolerance: ±0.05mm
Lens Alignment Error: ≤3min
The function of a roof prism can be understood as splitting a light beam into two halves and then recombining them. Under the condition of keeping the optical axis direction and the imaging orientation within the principal section unchanged, it adds a single reflection to change the total number of reflections in the system from odd to even, thereby achieving the requirement of image-to-object similarity.
| Material | K9, BK7 |
| Diameter | 5-300 mm |
| Dimensional tolerance | ±0.05 mm |
| Center Thickness Tolerance | ±0.05 mm |
| Angle Tolerance | <3 arc min |
| Surface Accuracy | λ/4@ 633nm or λ/10@633nm |
| Surface quality | 60/40 or 20/10 |
| Effective caliber | 90% |
| Chamfer/Beve | <0.2*45° |
| Coating | Customizable upon request: (AR /HR /PR) |
