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Bandpass Filters (Wide)

Bandpass Filters (Wide)

The Wide Bandpass filters have a bandwidth at half peak transmission that can be selected to suit your particular application. The only restriction is that the bandwidth must be kept within the bands indicated by the HWmax and HWmin.

Wide bandpass filters are available with greater average transmission than 70% upon special request. 

Custom sizes are available upon request.

Click here for a custom quote

Description Product No. Graph Price Qty / Buy / Quote
Wide Bandpass Filter: 25mm Dia, 10µm R05130-01 Quote
Substrate MaterialGermanium
Dimensions25mm Diameter ±0.1mm
Thickness1mm ±0.1mm
Bevel45°
Edge FinishGround
Surface Quality (SQ)80-50 Scratch & Dig
Clear Aperture (CA)90%
Angle Of Incidence (AOI)
Surface Flatness≤ 2 Waves Per 25mm at 632.8nm
Transmitted Wavefront Error (TWE)n/a
Parallelism≤ 2 Arc Minutes
CoatingIR Materials
WavelengthCenter Wavelength 10µm ±0.35µm
BandwidthFWHM: 4.8µm ± 0.17µm
BlockingIn range 2-7µm & 13.25-18µm T_ave <0.1%
Operating Temperature-50° C to 100° C
Center Wavelengthn/a
Cut OnSee wavelength & bandwidth
Cut OffSee wavelength & bandwidth
Laser DamageNot tested
TransmissionT_ave>70% between 50% cut on & 50% cut off
Wide Bandpass Filter: 25mm Dia, 4µm R05120-01 Quote
Substrate MaterialGermanium
Dimensions25mm Diameter ±0.1mm
Thickness1mm ±0.1mm
Bevel45°
Edge FinishGround
Surface Quality (SQ)80-50 Scratch & Dig
Clear Aperture (CA)90%
Angle Of Incidence (AOI)
Surface Flatness≤ 2 Waves Per 25mm at 632.8nm
Transmitted Wavefront Error (TWE)n/a
Parallelism≤ 2 Arc Minutes
CoatingIR Materials
WavelengthCenter Wavelength 4µm ±0.15µm
BandwidthFWHM: 2.4µm ± 0.15µm
BlockingIn range 1.5-2.6µm & 5.5-8µm T_ave <0.1%
Operating Temperature-50° C to 100° C
Center Wavelengthn/a
Cut OnSee wavelength & bandwidth
Cut OffSee wavelength & bandwidth
Laser DamageNot tested
TransmissionT_ave>80% between 50% cut on & 50% cut off