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| Coad | 669901 | Substrate | Neutral Filter Glass | |
| Type | Neutral Density Filter | OD | 1.3±0.065@1300nm | |
| Diameter(mm) | 25.40 | Diameter Tolerance | +0.00/-0.25mm | |
| Clear Aperture | >90% | Parallelism | <10 arcsec | |
| Thickness(mm) | 2.00 | Thickness Tolerance | - | |
| Surface Quality | 60-40 | Wavelength(nm) | 1100 - 1700 | |
| Surface Flatness | - | FWHM | - | |
| Transmittance | - | Mechanical Housing | SM1-8A（透镜套筒，SM1内外螺纹） | |
| Shell Diameter | 30.5mm | Housing Diameter Tolerance | +0.00/-0.05mm | |
| Outer Shell Thickness | 12.0mm | Operating Temperature | - | |
| Laser Damage Threshold | - | Transmission Wavefront Deviation | λ/4@633nm | |
| Coating Radial Angle | - | Coating Type | AR Coating | |
| Protective Chamfer | - | AOI | 6° | |
| Coating Specifications | Ravg<0.5%@1100-1700nm,AOI=6° | |||
Traders City price 75.00$ The different purchase price may be caused by the store's previous promotion activities. For details, please consult the seller
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