China High Quality Optical Quartz Roof Prism Binoculars Glass Prism, Find details about China Roof Prism, Optical Roof Prism from High Quality Optical Quartz Roof Prism Binoculars Glass Prism
Dimensional Tolerance | ±0.02mm |
Angle Tolerance | ±5 Arc Seconds |
Surface Flatness | λ/10 |
Surface Quality | 20/10 or better |
Material | BK7/quartz/sapphire/Ge/CaF2/ZnSe .etc |
Bevel | Protective bevel as needed |
Clear Aperture | >90% |