Second hand goods
Achromatic Doublet Lenses
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COMMERCIAL GRADE |
FACTORY STANDARD |
PRECISION GRADE |
Diameter Tolerance(mm) |
±0.05 |
±0.03 |
±0.0125 |
Center Thickness(mm) |
±0.01 |
±0.03 |
±0.025 |
Radius (%) |
±1% |
±0.5% |
±0.3% |
Focal Length Tolerance (%) |
±3% |
±1% |
±0.5% |
Cosmetic(MIL-C-13830A) |
100-80 |
40-20 |
10-5 |
Figure Tolerance in λ(Pow/irreg) |
3 - 1 |
2 - 1/4 |
1 - 1/10 |
Centration (Arc min) |
6 |
<3</span> |
<1</span> |
Dia. To Thick Ratio |
9~50: 1 |
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Coating (T% avg) |
96-98% |
99% |
99.5% |
Materials |
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For extremely precision sensitive system requirement, please contact us for further information, our engineers are more than happy to evaluate your design and have our experiences of manufacturing input help to define the most appropriate tolerances.
Good deal: buying from seller
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