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860 nm Narrow Bandpass Optical Filter
The MP-NBP-860 is a high-performance narrow bandpass filter designed specifically for the 860 nm wavelength region. Manufactured using advanced multilayer dielectric coating technology, it achieves an average transmittance greater than 93 % over the 854.5-865.5 nm band, while providing high optical density blocking for out-of-band light, effectively suppressing stray light interference. The product features excellent spectral selectivity, narrow bandwidth, high blocking depth, and good optical power resistance. It is widely used in fluorescence detection, Raman spectroscopy, near-infrared imaging, laser systems, machine vision, and scientific research applications.
Product features:Centre wavelength approximately 860 nm; Average transmittance > 93 %;Narrow bandpass design;Guaranteed minimum bandwidth of 11 nm;FWHM: 20.5 nm;Excellent optical power resistance
Part Number:MP‑NBP‑860
Application area:Emission filters in fluorescence microscopy | Raman spectroscopy systems | Laser detection systems | Optical communication experiments | Precision scientific optical systems
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Laser Wavelength Transmission Band
860 nm Tavg > 93% 854.5–865.5 nm

Specification | Value |
Transmission Band | Tavg > 93% 854.5–865.5 nm |
Blocking Band | ODavg > 5 300 – 832 nm |
Blocking Band | ODavg >6 490 – 685nm |
Blocking Band | ODavg >8 685 – 810 nm |
Blocking Band | ODavg >5 890 – 1050 nm |
FWHM Bandwidth | 20.5nm |
Guaranteed Minimum Bandwidth | 11 nm |
Angle of Incidence | 0 ± 5° |
Cone Half-angle | 7° |
Clear Aperture | ≥21mm |
Transverse Dimensions, Diameter | 25 mm |
Filter Thickness, Mounted | 5.0 mm |
Filter Thickness Tolerance, Mounted | ±0.1mm |
Filter Thickness, Unmounted | 2.0 mm |
Filter Thickness Tolerance, Unmounted | ±0.1mm |
Surface Quality (Scratch-Dig) | 60-40 |
Filter Effective Index | 2.06 |
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 hrs. |
Orientation | Arrow on ring is preferred direction of propagation of light |
Spectral Characteristic Curves
Transmittance-Wavelength Spectrum
Optical Density Spectrum

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