395 nm Narrow Bandpass Optical Filter

395 nm Narrow Bandpass Optical Filter

The MP-NBP-395 is a narrow bandpass filter with a centre operating wavelength of approximately 395 nm. It is designed to selectively transmit the 389.5-400.5 nm band while efficiently blocking most out-of-band light from 200 nm to 925 nm. The filter exhibits an average transmission greater than 85 % in the passband and provides deep blocking with an average optical density greater than 6 over the 417-670 nm range, effectively suppressing UV, visible, and near-infrared background signals to improve the signal-to-noise ratio in fluorescence detection, spectral analysis, and precision imaging systems. The product comes in a 25 mm round mounted format and is suitable for optical systems operating at near‑normal incidence.

Product features：Narrowband high transmission from 389.5 nm to 400.5 nm；Average passband transmittance: >85%；Full width at half maximum (FWHM): 16.1 nm；Guaranteed minimum bandwidth of 11 nm；Standard 25 mm round mounted size；Excellent long‑term light

Part Number：MP‑NBP‑395

Application area：UV fluorescence excitation | Fluorescence microscopy imaging | UV imaging systems | Semiconductor and materials inspection | Research and laboratory equipment

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Main parameters
General Parameters
Optional Configurations
Downloads

Main parameters

Core parameters

Laser Wavelength Transmission Band

395 nm Tavg > 85% 389.5–400.5 nm

Dimension Drawing

General Parameters

Specification	Value
Transmission Band	T_avg > 85% 389.5–400.5 nm
Blocking Band	OD_avg > 4 200 – 275 nm
Blocking Band	OD_avg >5 275 – 381nm
Blocking Band	OD_avg >5 408.5 – 417 nm
Blocking Band	OD_avg >6 417 – 670 nm
Blocking Band	OD_avg >5 670 – 750 nm
Blocking Band	OD_avg >5 750 – 925 nm
FWHM Bandwidth	16.1nm
Guaranteed Minimum Bandwidth	11 nm
Angle of Incidence	0 ± 5°
Cone Half-angle	7°
Clear Aperture	≥22mm
Transverse Dimensions, Diameter	25 mm
Filter Thickness, Mounted	3.5 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	1.91
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

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Optical Density Spectrum

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Optional Configurations

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Product title: 395 nm Narrow Bandpass Optical Filter

Product link: https://www.idealphotonics.com/product/detail/1635.html

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