| Transmission Band 1 | Tavg > 85% 352 – 402 nm |
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| Blocking Band 1 | ODavg > 5 200 – 344 nm |
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| Blocking Band 2 | ODavg > 4.5 409.5 – 409.5 nm |
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| Blocking Band 3 | ODavg > 10 417 – 477 nm (Design specification - measurements are noise-floor limited) |
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| Blocking Band 4 | ODavg > 4 477 – 700 nm |
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| Blocking Band 5 | ODavg > 2 700 – 925 nm |
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| Center Wavelength 1 | 377 nm |
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| Guaranteed Minimum Bandwidth 1 | 50 nm |
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| FWHM Bandwidth 1 (nominal) | 53.8 nm |
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| Angle of Incidence | 0 ± 5 degrees |
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| Cone Half-angle | 7 degrees |
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| Optical Damage Rating | Testing has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm2) for over 500 hours. |
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| Transverse Dimensions (diameter) | 25 mm |
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| Transverse Tolerance | + 0.0 / – 0.1 mm |
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| Filter Thickness (mounted) | 5.0 mm |
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| Filter Thickness Tolerance (mounted) | ± 0.1 mm |
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| Clear Aperture | ≥ 21 mm |
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| Scratch-Dig | 60-40 |
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| Filter Thickness (unmounted) | 3.5 mm |
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| Filter Thickness Tolerance (unmounted) | ± 0.1 mm |
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| Orientation | Arrow on ring indicates preferred direction of propagation of light |
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