Negative achromatic lens

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Negative achromatic lens
Posting date : Oct 18, 2011
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70-
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Material:BK7 Design wavelength:480.0nm,546.1nm,643.8nm Paraxial focal length:±2% Dimension tolerance:0/-0.15mm Thinkness Tolerance:±0.15mm Centration:3 arc min  Surface figure:1/4λ Surface quality:60—40scratch and dig Clear aperture:90% Coating:avaliable upon request

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