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780 nm Narrow Bandpass Optical Filter
The MP-NBP-780 is a high-performance narrow bandpass filter operating around 780 nm. It offers high transmittance in the 774-786 nm band and provides high optical density blocking across visible and near-infrared off-target wavelengths, effectively suppressing background light, stray light, and other unwanted wavelengths. Featuring high in-band transmission and excellent out‑band rejection, this filter is suitable for fluorescence detection, near-infrared imaging, spectral analysis, laser detection, machine vision, and research optical systems.
Product features:Passband: 774–786 nm;Average Transmittance: Tavg > 93%;FWHM Bandwidth: 21 nm;Guaranteed Minimum Bandwidth: 12 nm;Stable long-term optical performance
Part Number:MP‑NBP‑780
Application area:Fluorescence detection and imaging | Spectral analysis | Biomedical detection | Research optical setups
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Laser Wavelength Transmission Band
780nm Tavg > 93% 774 – 786 nm

Specification | Value |
Transmission Band | Tavg > 93% 774 – 786 nm |
Blocking Band | ODavg > 5 300 - 755 nm |
Blocking Band | ODavg > 6 490 - 615 nm |
Blocking Band | ODavg > 8 615 - 732 nm |
Blocking Band | OD > 3.5 759 nm |
Blocking Band | ODavg > 5 807 - 1050 nm |
FWHM Bandwidth | 21nm |
Guaranteed Minimum Bandwidth | 12 |
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 | 2.05 |
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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