Our capability is defined by stable, repeatable performance — not theoretical limits.
Typical Processing Capability
The following parameters represent typical stable processing capability under standard conditions.
• Diameter Range
Φ5 – 400 mm
• Radius of Curvature
R3 – R∞
• Outer Diameter Tolerance
Better than H6
• Thickness Tolerance
±0.02 mm (typical)
Processing Capability by Diameter
Processing Capability by Diameter Range
— The following content is intended to illustrate typical processing capability control levels across different diameter ranges and does not constitute specific product specifications.
| Lens Type | Diameter Range (mm) | Surface Power (Fringes) |
Surface Irregularity (λ @ 632.8nm) |
Thickness Tolerance (mm) |
Diameter Tolerance | Surface Quality (S/D) |
| Small Diameter Spherical Lens | Φ5 – 80 | ≤3 | 0.3 – 0.5 | ±0.02 | Better than GB/T h6 | 40/20 |
| Medium Diameter Spherical Lens | Φ80 – 160 | ≤5 | 0.75 – 1 | ±0.05 | Better than GB/T h6 | 40/20 |
| Large Diameter Spherical Lens | Φ160 – 240 | ≤8 | 1 – 2 | ±0.10 | Better than GB/T h6 | 60/40 |
| Extra-Large Diameter Spherical Lens | Φ240– 410 | ≤12 | ≥2 | ±0.20 | Better than GB/T h6 | 80/50 |
| Equal Thickness / Concentric Spherical Lens | Φ5 – 120 | - | - | ±0.01 | Better than GB/T h6 | 40/20 |
For detailed definitions, please refer to our Technical Standards.
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