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Looking For a Custom Optical Solution? Enquire

Our high quality interference bandpass filters pass light of a narrow bandwidth/wavelength and reflect/block all other light.  In principle interference filters can be designed and manufactured to almost any specification of centre wavelength and band pass. In practice bespoke/custom interference filters can be expensive and so should be avoided unless there are real advantages. Although our prices for custom interference filters are extremely competitive and we are happy to produce, it is best to utilise our extensive stock range of interference filters on offer.  Our standard ranges of stock filter are available from 214nm-2000nm in various bandwidths from narrow 3nm FIN type up to 65-100nm FIW type to meet most requirements.


It is also important to note our interference bandpass filters are of the higher quality type. Where most manufacturers filters are simply sealed into a metal housing with just resin and so susceptible to leakage of moisture, our range of interference filters are individual CNC scribed and hermetically sealed to form a secure stack in their rings to ensure maximum long-term stability.

Although our standard range of stock interference band pass filters are mounted, un-mounted types with aerospace painted edges can be supplied at special request.  These interference bandpass filters are all  typically  3-7 cavity. In most cases blocking is metal-dielectric from 200nm to Far IR (3000+nm) at OD4.  However, we can offer dielectrically blocked interference filters for even longer extended life spans. Two issues with interference filters need to be considered; firstly any light not passed is reflected and so attention must be paid to where this light will finish up. Secondly the filter performance is sensitive to incidence angle with the characteristic moving to shorter wavelengths as the incidence angle is increased.

Our narrow band interference laserline filters are typically used in imaging applications whilst our fluorescence and dichroic excitation and emission filters are typically used in spectroscopy, microscopy and medical fluorescence applications.

Items 1-10 of 382

Name CWL (nm) Peak Transmission (%) FWHM Diameter (mm) Thickness (mm) Blocking Type Avg. Blocking Range Avg. Blocking OD Price Buy
1000DIB12
US$93.83
800DIR50

pdf

70 40 50 6.1 Dielectric 200nm to 1150nm 5
US$410.05
1580DIB12 16 12.5 6.1 Dielectric 4
US$107.73
633DIJ25 70 10 25 6.1 Dielectic 200nm to 1150nm 5
US$152.90
640FIB12 50 10 12.5 6.1 Silver 200nm to 1150nm 5
US$84.44
633DIJ12

pdf

70 10 12.5 6.1 Dielectric 200nm to 1150nm 5
US$93.83
520DIB50

pdf

520 50 10 50 6.1 Dielectric 200nm to 1150nm 5
US$410.05
1720DIB25 40 15 25 6.1 Dielectric 200nm to 2050nm 4
US$208.50
273FIA35 >15% 13 35 6 Metallic 200nm to 1200nm 4
US$451.06
265FIA35 >15% 13 35 6 Metallic 200nm to 1200nm 4
US$451.06
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Interference Bandpass Filters

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