The core structure of a ball lens is a complete sphere or a curved surface body that is close to a sphere. Its surface is precisely ground and polished to ensure that light can smoothly enter and exit. The ball lens achieves the convergence, divergence and coupling of light beams through its spherical surface.
Simple structure, low cost: It can replace complex lens groups and the processing cost is lower than that of aspherical or cylindrical lenses.
High numerical aperture, high light collection efficiency: Short focal length, high efficiency in coupling light.
Miniaturization and easy integration: Customizable small size, symmetrical structure simplifies the optical path alignment process.
| Material | BK7 grade A, B270, UV grade Fused Silica, Sapphire etc. |
| Diameter Tolerance | ±0.05 mm (standard), up to +0.000/-0.002mm |
| Cyindrical Surface Figure | ±0.005 mm (standard), up to +/-0.6 μm |
| Surface Quality | 60-40 S-D (standard), up to 20-10 S-D |
| Coating | Uncoated |
