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Penta Prism |
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AddDate:2010/2/8 16:30:13 |
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Material: BK7 Grade A optical glass or equivalent optical glass Dimension Tolerance: +/- 0.25mm 90¡ã Deviation: < 30 arc seconds Precision series: up to 10 arc seconds Flatness: From l/2 to l/4 at 632.8 nm Reflectivity: R > 95% per face from 630 to 680 nm Surface Quality: 60-40 scratch and dig Clear Aperture >80% Protective Bevel
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