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Lab Quality: Materail:BK7 grade A optical glass Focal Length:+-5% Length:+-0.2mm Width:+-0.2mm Tc=center thickness:+-0.5mm Wedge:+-8 milliradiaus Flat island width:0.5mm+-0.04mm Surface Quality:80-50 scratch-dig Clear apperture:90% Coating:none LAB Products Code and Nos List >>>>>> |
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Quality: >>>>>> Materail:BK7 grade A optical glass Focal Length:+-1% Length:+-0.1mm Width:+-0.1mm Tc=center thickness:+-0.1mm Centration: a.PCKV00000-11000:5arcminutes b.others:3arc minutes Flat island width:0.5mm+-0.04mm Surface Accuracy:0.5 fringes per cm Surface Quality:60-40 scratch-dig Clear apperture:90% Coating:none Research Products Code adn Nos List >>>>>123456> |
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