NE550B In Stock
Description: Unmounted Ø1/2" Absorptive ND Filter with 5.0 Optical Density
| Part Number | NE550B |
|---|---|
| Category | Optics |
| Manufacturer | ThorLabs |
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The NE550B by ThorLabs is an unmounted absorptive neutral density (ND) filter that is designed to meet a wide array of optical needs. The NE550B boasts an optical density (OD) of 5.0 and is expertly crafted from a Schott glass substrate, ensuring a spectrally flat absorption coefficient in the visible region from 400 nm to 650 nm.
Unlike its metallic counterparts, the NE550B filter is highly efficient at reducing multiple reflections, making it an ideal choice for low-power applications. Additionally, this filter is Ø1/2" in diameter and has a clear aperture of >Ø11.4 mm, ensuring superior performance and quality. The NE550B filter is directly compatible with a variety of lens tubes, making it highly versatile and easy to use. Its high dimensional tolerance of +0.0 / -0.25 mm ensures precise and accurate filtering.
| Filter Size | Ø1/2" |
| Dimensional Tolerance | +0.0 / -0.25 mm (Diameter) |
| Clear Aperture | >Ø11.4 mm |
| Surface Quality | 40-20 Scratch-Dig |
| Parallelism | <10 arcsec |
| Substrate | NG1, NG4, NG9, or NG11 (Schott Glass) |
| Optical Density (Transmission) | 5.0 (1x10-3%) |
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Warranty:
Refurbished - 2 year warranty
New Surplus - 3 year warranty