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Double-Concave Lenses |
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AddDate:2010/2/8 16:13:47 |
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Material: BK7 or UV fused silica Design Wavelength: 546.1nm Design Index: BK7: 1.5183 ¡À 0.0005 Fused silica: 1.46008 ¡À 0.0005 Diameter Tolerance: +0.0, -0.15mm Paraxial Focal Length: ¡À2% Centration: 3 arc minutes Clear Aperture: >80% Surface Irregularity: l/4@632.8nm Surface Quality: 60-40 scratch and dig Protective Bevel
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