Product Description
UV Grade Fused Silica lens, plano-convex, 25.4mm (+0/-0.25mm) diameter, 6.35mm (+/-0.25mm) centre thickness, convex surface: lambda/8 surface figure, 10-5 scratch-dig, 226.9mm ROC (+/-1%) rear surface: lambda/8 surface figure, 10-5 scratch-dig, nominal focal length: 500mm, uncoated
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