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All Products / Optics / Optical Filters / Neutral Density (ND) Filters / VIS-NIR Neutral Density (ND) Filters
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

0.7 OD 50mm Diameter VIS-NIR ND Filter

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Stock #26-520 New Contact Us
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£60.35
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£60.35
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£51.34
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Diameter (mm):
50.00 +0.00/-0.25
Angle of Incidence (°):
0
Optical Density OD (Average):
0.7
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Coating:
Surface 1: Inconel
Reflection (%):
42.00
Surface Quality:
60-40
Thickness (mm):
1.00 ±0.20
Transmission (%):
20.00
Type:
Neutral Density Filter
Blocking Wavelength Range (nm):
350 - 1100
Clear Aperture (%):
90
Transmitted Wavefront, P-V:
λ/4 (measure pre-coating)
Neutrality:
±5% of Optical Density
Note:
Optical density values are average over specified blocking wavelength range.

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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REACH 241:
Compliant
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Product Family Description

  • Consistent Transmission from 350 – 1100nm
  • Optical Densities from 0.1 to 3.0 Available
  • Combine Filters for Custom Optical Densities

TECHSPEC® VIS-NIR Neutral Density (ND) Filters feature a constant transmission from 350 – 1100nm and are used to attenuate many broadband visible and NIR light sources. Optical Densities are additive allowing these filters to be stacked to achieve custom optical density values.  For example, stacking filters with OD values of 0.2 and 2.0 yields a resultant optical density of 2.2. TECHSPEC® VIS-NIR Neutral Density (ND) Filters are available in a range of 12.5, 25, and 50mm diameters as well as a 50 x 50mm square option in various increments of optical densities from 0.1 to 3.0.  These filters are ideal for use in laser and photometer applications, where excessive power can cause damage or inaccurate results.

Note: Low optical density filters (0.1, 0.15, and 0.2 OD) are coated with thin layers of Inconel and their performance may shift overtime. To prolong the lifetime of these filters, we recommend using non-contact cleaning methods (such as compressed air) to prevent damage to the coating and avoiding the use of these filters in humid environments to prevent oxidation.