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Square Neutral Density Filters, Unmounted
We offer a range of square unmounted neutral density filters. These unmounted neutral density filters exhibit all of the useful attributes of our mounted filters, but will be found useful in special and built-in applications.
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| Wavelength Range (nm) | Size (mm) | Optical Density (OD) | Dimensions tolerance | Thickness tolerance | Parallelism | Surface Quality | Density Specifications | Thickness (mm) | Transmittance (%) |
|---|---|---|---|---|---|---|---|---|---|
| 400-700 | 50.0 | 3.00 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 0.1 ± 0.07 |
| 400-700 | 50.0 | 2.00 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 1 ± 0.5 |
| 400-700 | 50.0 | 1.30 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 5 ± 1 |
| 400-700 | 50.0 | 1.00 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 10 ± 2 |
| 400-700 | 50.0 | 0.89 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 12.5 ± 2 |
| 400-700 | 50.0 | 0.70 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 20 ± 2 |
| 400-700 | 50.0 | 0.60 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 25 ± 2.5 |
| 400-700 | 50.0 | 0.52 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 30 ± 3 |
| 400-700 | 50.0 | 0.40 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 40 ± 4 |
| 400-700 | 50.0 | 0.30 | ±0.2mm | ±0.5mm | ≤ 3arcmin | 60 - 40 | @550nm | <5 | 50 ± 5 |