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 Doublet Lenses - Achromatic Commercial Grade
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These commercial achromatic doublets are similar the quality
versions but suitable for general purpose use.
Specifications: | Typical Material: | Flint (SF11) and Crown glass(BK7) | | Diameter: | +0.0 / -0.10mm | | Centring Accuracy: | < 0.1mm (F.L less than or equal to 40mm) < 2.5mrad (F.L > 40mm) | | Focal Length: | ± 0.1% (less than or equal to 10mm) ± 1% (>10mm) | | Surface Quality: | <40-20 scratch/dig | | | | | | | | |
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