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Objective
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Plan APO 250X with the High NA
Plan APO 250X with the High NA

Infinity Plan APO TIRF 250X/1.7 objective with the high NA while f=200mm

Infinity Plan APO TIRF 250X/1.7 objective while f=200mm， hign NA=1.7, good transmittion rate, while two model working distance like WD=0.28mm and WD=0mm.