Bi-Concave Lenses Specifications Materials: Fine annealed optical crown glass Focal Length: ±2% Diameter: ± 0.25mm Center Thickness: ±0.2mm Surface Quality: 60-40 scratch and dig Centration: 3 arc minutes All dimensions in millimeters Part Number Focal Length Diameter CT PAP-BCC0050 -8.0 5.0 1.0 PAP-BCC0100 -33.6 38.0 3.1 PAP-BCC0200 -45.1 38.0 1.4

Positive Achromats Negative Achromats Bi-Convex Bi-Concave Plano-Convex Plano-Concave Positive Meniscus Negative Meniscus Positive Plano-Cylindrical Negative Plano-Cylindrical

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