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Knight Optical’s complete range of cost effective bandblocking dichroic filter sets offer superior transmission, reflection and absorption characteristics

Dichroic band blocking filters are designed to block an isolated bandwidth while transmitting all other wavelengths. While traditional glass and interference bandpass filters offer improved blocking characteristics, the advantage of bandblocking dichroic filters comes with the enhanced sharpness of transition between the transmitting and reflecting bands and therefore improved blocking accuracy. Having negligible absorption they are suitable for high powers and do not show the strong fluorescence of certain glass filters.

Our dichroic bandblocking filters are available in a range of wavelengths and are supplied in standard 12.5mm and 25mm diameter or 50mm square types. We are happy to cut and edge filters for non standard sizes to suit your application.

Material:
Diameter:
Length/Width:
Thickness:
Surface Quality:
Wavelengths:
Wavelength Accuracy:
Transmission:
Borosilicate or equivalent, Sodalime
+0.0 / -0.20 mm
± 0.25 mm
± 0.20 mm
<60-40 scratch/dig
300-1200nm dependant on type
+/-5nm
Tmax=95% dependant on type and substrate

Note:
Wavelength cut-on listed in table is transition cut-on wavelength (T=Tmax/2)

 

Available size: Square 7mm-300mm, Diameter 10mm-400mm
Cutting down or edged to special shapes and sizes at short notice
Mounting of diameters and squares
Available in sets, supplied in a wooden storage box for research and laboratory use

Items 1-10 of 45

Name Type Wavelength cut-on (nm) 0 degree AOI CWL (nm) 0 degree AOI Wavelength cut-off (nm) 0 degree AOI Diameter (mm) Length (mm) Width (mm) Thickness (mm) Material Price Buy
521FDN12 pdf Bandblocking Dichroic Filter 572 521 470 12.5 1.1 Borosilicate
US$28.22
521FDN25 pdf Bandblocking Dichroic Filter 572 521 470 25.0 1.1 Borosilicate
US$30.51
521FDN50 pdf Bandblocking Dichroic Filter 572 521 470 50.0 50.0 1.1 Borosilicate
US$52.75
530FDN12 pdf Bandblocking Dichroic Filter 611 530 447 12.5 1.1 Borosilicate
US$28.22
530FDN25 pdf Bandblocking Dichroic Filter 611 530 447 25.0 1.1 Borosilicate
US$30.51
530FDN50 pdf Bandblocking Dichroic Filter 611 530 447 50.0 50.0 1.1 Borosilicate
US$52.75
531FDN12 pdf Bandblocking Dichroic Filter 600 531 460 12.5 1.1 Borosilicate
US$28.22
531FDN25 pdf Bandblocking Dichroic Filter 600 531 460 25.0 1.1 Borosilicate
US$30.51
531FDN50 pdf Bandblocking Dichroic Filter 600 531 460 50.0 50.0 1.1 Borosilicate
US$52.75
535FDN12 pdf Bandblocking Dichroic Filter 635 535 435 12.5 1.1 Borosilicate
US$28.22
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Bandblocking Dichroic Filters

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