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Home > Products > Light Delivery & Control > Microscopy Filters > Individual Filters > Bandpass Filters > 900/11 nm VersaChrome® tunable bandpass filter

900/11 nm VersaChrome® tunable bandpass filter

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VersaChrome filters do what no thin-film filter has done before – offer tunability over a very wide range of wavelengths by adjusting the angle of incidence with essentially no change in spectral performance. They combine the spectral characteristics and two-dimensional imaging performance of a thin-film filter with the wavelength-tuning flexibility of a diffraction grating.

Note on spectral plots:
In the past, each shipment has included a spectral plot for every filter and every lot code in the shipment. In an effort to be more eco-friendly, we will no longer be including these plots with each shipment. If you require spectral plot data, please see here for more information.

Optical Specifications
Transmission BandTavg > 90%
Transmission Band, @ 60 degTavg > 85%
Transmission Wavelength900 nm (minimum)
Transmission Wavelength Range894.5 - 905.5 nm
Transmission Wavelength Range, @ 60 deg781.5 - 792.5 nm
Transmission Wavelength, @ 60 deg787 (maximum) nm
FWHM Bandwidth20 nm
Blocking BandODavg > 6 275 – 1100 nm
Blocking Band, @ 60 degODavg > 6 275 – 925 nm
Cutoff Transition Width3% (from transmission to blocking)
Cutoff Transition Width, @ 60 deg3% (from transmission to blocking)
Cuton Transition Width2% (from blocking to transmission)
Cuton Transition Width, @ 60 deg3% (from blocking to transmission)

General Specifications
Angle of Incidence0 – 60 °
Cone Half-angle0 °
Filter Effective Index1.79 Understanding 'Effective Index of Refraction' neff
Optical Damage RatingNot tested

Physical Specifications (for standard parts - please contact us for custom sizes)
Mounted / UnmountedUnmounted
Size25.2 x 35.6 x 2.0 mm
Transverse Dimensions, LxW25.2 mm x 35.6 mm
Transverse Tolerance, Mounted± 0.1 mm
Filter Thickness, Unmounted2.0 mm
Filter Thickness Tolerance, Unmounted± 0.1 mm
Clear Aperture≥ 80% (elliptical)
Surface Quality (Scratch-Dig)60-40
Substrate Thickness2.0 mm
Substrate TypeLow-autofluorescence optical quality glass
OrientationReflective surface marked with part number – Orient in direction of incoming light


  • Size: 25.2 x 35.6 x 2.0 mm


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Optical Density

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Semrock Spectral Plot Info

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