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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)
Wavelength cut-off listed in table is transition cut-off 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

45 Items

Name Type Wavelength cut-on (nm) 0 degree AOI CWL (nm) 0 degree AOI Wavelength cut-off (nm) 0 degree AOI 6300K Conversion 5500K Conversion 3200K Conversion Diameter (mm) Length (mm) Width (mm) Thickness (mm) Material Price Buy
521FDN12 pdf Bandblocking Dichroic Filter 572 521 470 12.5 1.1 Borosilicate
$25.65
575FDN50 pdf Bandblocking Dichroic Filter 690 575 460 50.0 50.0 1.1 Borosilicate
$47.96
575FDN25 pdf Bandblocking Dichroic Filter 690 575 460 25.0 1.1 Borosilicate
$27.73
575FDN12 pdf Bandblocking Dichroic Filter 690 575 460 12.5 1.1 Borosilicate
$25.65
554FDN50 pdf Bandblocking Dichroic Filter 639 554 470 50.0 50.0 1.1 Borosilicate
$47.96
554FDN25 pdf Bandblocking Dichroic Filter 639 554 470 25.0 1.1 Borosilicate
$27.73
554FDN12 pdf Bandblocking Dichroic Filter 639 554 470 12.5 1.1 Borosilicate
$25.65
552FDN50 pdf Bandblocking Dichroic Filter 645 552 459 50.0 50.0 1.1 Borosilicate
$47.96
552FDN25 pdf Bandblocking Dichroic Filter 645 552 459 25.0 1.1 Borosilicate
$27.73
552FDN12 pdf Bandblocking Dichroic Filter 645 552 459 12.5 1.1 Borosilicate
$25.65
550FDN50 pdf Bandblocking Dichroic Filter 630 550 470 50.0 50.0 1.1 Borosilicate
$47.96
550FDN25 pdf Bandblocking Dichroic Filter 630 550 470 25.0 1.1 Borosilicate
$27.73
550FDN12 pdf Bandblocking Dichroic Filter 630 550 470 12.5 1.1 Borosilicate
$25.65
543FDN50 pdf Bandblocking Dichroic Filter 625 543 461 50.0 50.0 1.1 Borosilicate
$47.96
543FDN25 pdf Bandblocking Dichroic Filter 625 543 461 25.0 1.1 Borosilicate
$27.73
543FDN12 pdf Bandblocking Dichroic Filter 625 543 461 12.5 1.1 Borosilicate
$25.65
542FDN50 pdf Bandblocking Dichroic Filter 612 542 472 50.0 50.0 1.1 Borosilicate
$47.96
542FDN25 pdf Bandblocking Dichroic Filter 612 542 472 25.0 1.1 Borosilicate
$27.73
542FDN12 pdf Bandblocking Dichroic Filter 612 542 472 12.5 1.1 Borosilicate
$25.65
540FDN50 pdf Bandblocking Dichroic Filter 630 540 450 50.0 50.0 1.1 Borosilicate
$48.65
540FDN25 pdf Bandblocking Dichroic Filter 630 540 450 25.0 1.1 Borosilicate
$28.43
540FDN12 pdf Bandblocking Dichroic Filter 630 540 450 12.5 1.1 Borosilicate
$26.06
539FDN50 pdf Bandblocking Dichroic Filter 615 539 462 50.0 50.0 1.1 Borosilicate
$47.96
539FDN25 pdf Bandblocking Dichroic Filter 615 539 462 25.0 1.1 Borosilicate
$27.73
539FDN12 pdf Bandblocking Dichroic Filter 615 539 462 12.5 1.1 Borosilicate
$25.65
538FDN50 pdf Bandblocking Dichroic Filter 628 538 449 50.0 50.0 1.1 Borosilicate
$47.96
538FDN25 pdf Bandblocking Dichroic Filter 628 538 449 25.0 1.1 Borosilicate
$27.73
538FDN12 pdf Bandblocking Dichroic Filter 628 538 449 12.5 1.1 Borosilicate
$25.65
537FDN50 pdf Bandblocking Dichroic Filter 585 537 490 50.0 50.0 1.1 Borosilicate
$49.35
537FDN25 pdf Bandblocking Dichroic Filter 585 537 490 25.0 1.1 Borosilicate
$28.43
537FDN12 pdf Bandblocking Dichroic Filter 585 537 490 12.5 1.1 Borosilicate
$26.06
536FDN50 pdf Bandblocking Dichroic Filter 612 536 459 50.0 50.0 1.1 Borosilicate
$47.96
536FDN25 pdf Bandblocking Dichroic Filter 612 536 459 25.0 1.1 Borosilicate
$27.73
536FDN12 pdf Bandblocking Dichroic Filter 612 536 459 12.5 1.1 Borosilicate
$25.65
535FDN50 pdf Bandblocking Dichroic Filter 635 535 435 50.0 50.0 1.1 Borosilicate
$47.96
535FDN25 pdf Bandblocking Dichroic Filter 635 535 435 25.0 1.1 Borosilicate
$27.73
535FDN12 pdf Bandblocking Dichroic Filter 635 535 435 12.5 1.1 Borosilicate
$25.65
531FDN50 pdf Bandblocking Dichroic Filter 600 531 460 50.0 50.0 1.1 Borosilicate
$47.96
531FDN25 pdf Bandblocking Dichroic Filter 600 531 460 25.0 1.1 Borosilicate
$27.73
531FDN12 pdf Bandblocking Dichroic Filter 600 531 460 12.5 1.1 Borosilicate
$25.65
530FDN50 pdf Bandblocking Dichroic Filter 611 530 447 50.0 50.0 1.1 Borosilicate
$47.96
530FDN25 pdf Bandblocking Dichroic Filter 611 530 447 25.0 1.1 Borosilicate
$27.73
530FDN12 pdf Bandblocking Dichroic Filter 611 530 447 12.5 1.1 Borosilicate
$25.65
521FDN50 pdf Bandblocking Dichroic Filter 572 521 470 50.0 50.0 1.1 Borosilicate
$47.96
521FDN25 pdf Bandblocking Dichroic Filter 572 521 470 25.0 1.1 Borosilicate
$27.73

45 Items

1

Bandblocking Dichroic Filters

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