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Knight Optical’s complete range of cost effective longpass dichroic filters offer superior transmission, reflection and absorption characteristics.

Longpass filters are designed to transmit wavelengths higher than the cut on point and reflect all lower wavelengths. These dichroic longpass filters consist of thin-film dielectric coatings on glass with sharp transitions between the transmitted and reflected bands. Having negligible absorption they are suitable for high powers and do not show the strong fluorescence of certain glass filters.

Our dichroic longpass 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

57 Items

Name Type Wavelength cut-on (nm) 0 degree AOI Diameter (mm) Length (mm) Width (mm) Thickness (mm) Material Price Buy
521FDL50 pdf Longpass Dichroic Filter 521 50.0 50.0 1.1 Borosilicate
$47.96
521FDL25 pdf Longpass Dichroic Filter 521 25.0 1.1 Borosilicate
$27.73
521FDL12 pdf Longpass Dichroic Filter 521 12.5 1.1 Borosilicate
$25.65
510FDL50 pdf Longpass Dichroic Filter 510 50.0 50.0 1.1 Borosilicate
$47.96
510FDL25 pdf Longpass Dichroic Filter 510 25.0 1.1 Borosilicate
$27.73
510FDL12 pdf Longpass Dichroic Filter 510 12.5 1.1 Borosilicate
$25.65
500FDL50 pdf Longpass Dichroic Filter 500 50.0 50.0 1.1 Borosilicate
$47.96
500FDL25 pdf Longpass Dichroic Filter 500 25.0 1.1 Borosilicate
$27.73
500FDL12 pdf Longpass Dichroic Filter 500 12.5 1.1 Borosilicate
$25.65
490FDL50 pdf Longpass Dichroic Filter 490 50.0 50.0 1.1 Borosilicate
$47.96
490FDL25 pdf Longpass Dichroic Filter 490 25.0 1.1 Borosilicate
$27.73
490FDL12 pdf Longpass Dichroic Filter 490 12.5 1.1 Borosilicate
$25.65
480FDL25 pdf Longpass Dichroic Filter 480 25.0 1.1 Borosilicate
$27.73
480FDL12 pdf Longpass Dichroic Filter 480 12.5 1.1 Borosilicate
$25.65
420FDL50 pdf Longpass Dichroic Filter 420 50.0 50.0 1.1 Borosilicate
$48.65
420FDL25 pdf Longpass Dichroic Filter 420 25.0 1.1 Borosilicate
$28.43
420FDL12 pdf Longpass Dichroic Filter 420 12.5 1.1 Borosilicate
$26.06
550FDL25 pdf Longpass Dichroic Filter 550 25.0 1.1 Borosilicate
$27.73
480FDL50 pdf Longpass Dichroic Filter 480 50.0 50.0 1.1 Borosilicate
$47.96
740FDL50 pdf Longpass Dichroic Filter 750 50.0 50.0 1.1 Borosilicate
$49.35
740FDL25 pdf Longpass Dichroic Filter 750 25.0 1.1 Borosilicate
$28.43
740FDL12 pdf Longpass Dichroic Filter 750 12.5 1.1 Borosilicate
$26.06
655FDL50 pdf Longpass Dichroic Filter 655 50.0 50.0 1.1 Borosilicate
$49.35
655FDL25 pdf Longpass Dichroic Filter 655 25.0 1.1 Borosilicate
$27.73
655FDL12 pdf Longpass Dichroic Filter 655 12.5 1.1 Borosilicate
$25.65
645FDL50 pdf Longpass Dichroic Filter 645 50.0 50.0 1.1 Borosilicate
$47.96
645FDL25 pdf Longpass Dichroic Filter 645 25.0 1.1 Borosilicate
$27.73
645FDL12 pdf Longpass Dichroic Filter 645 12.5 1.1 Borosilicate
$25.65
635FDL50 pdf Longpass Dichroic Filter 635 50.0 50.0 1.1 Borosilicate
$47.96
635FDL25 pdf Longpass Dichroic Filter 635 25.0 1.1 Borosilicate
$27.73
635FDL12 pdf Longpass Dichroic Filter 635 12.5 1.1 Borosilicate
$25.65
625FDL50 pdf Longpass Dichroic Filter 625 50.0 50.0 1.1 Borosilicate
$47.96
625FDL25 pdf Longpass Dichroic Filter 625 25.0 1.1 Borosilicate
$27.73
625FDL12 pdf Longpass Dichroic Filter 625 12.5 1.1 Borosilicate
$25.65
615FDL50 pdf Longpass Dichroic Filter 615 50.0 50.0 1.1 Borosilicate
$47.96
615FDL25 pdf Longpass Dichroic Filter 615 25.0 1.1 Borosilicate
$27.73
615FDL12 pdf Longpass Dichroic Filter 615 12.5 1.1 Borosilicate
$25.65
600FDL50 pdf Longpass Dichroic Filter 600 50.0 50.0 1.1 Borosilicate
$47.96
600FDL25 pdf Longpass Dichroic Filter 600 25.0 1.1 Borosilicate
$27.73
600FDL12 pdf Longpass Dichroic Filter 600 12.5 1.1 Borosilicate
$25.65
590FDL50 pdf Longpass Dichroic Filter 590 50.0 50.0 1.1 Borosilicate
$47.96
590FDL25 pdf Longpass Dichroic Filter 590 25.0 1.1 Borosilicate
$27.73
590FDL12 pdf Longpass Dichroic Filter 590 12.5 1.1 Borosilicate
$25.65
581FDL50 pdf Longpass Dichroic Filter 581 50.0 50.0 1.1 Borosilicate
$47.96
581FDL25 pdf Longpass Dichroic Filter 581 25.0 1.1 Borosilicate
$27.73
581FDL12 pdf Longpass Dichroic Filter 581 12.5 1.1 Borosilicate
$25.65
565FDL50 pdf Longpass Dichroic Filter 565 50.0 50.0 1.1 Borosilicate
$47.96
565FDL25 pdf Longpass Dichroic Filter 565 25.0 1.1 Borosilicate
$27.73
565FDL12 pdf Longpass Dichroic Filter 565 12.5 1.1 Borosilicate
$25.65
550FDL50 pdf Longpass Dichroic Filter 550 50.0 50.0 1.1 Borosilicate
$47.96
550FDL12 pdf Longpass Dichroic Filter 550 12.5 1.1 Borosilicate
$25.65
540FDL50 pdf Longpass Dichroic Filter 540 50.0 50.0 1.1 Borosilicate
$47.96
540FDL25 pdf Longpass Dichroic Filter 540 25.0 1.1 Borosilicate
$27.73
540FDL12 pdf Longpass Dichroic Filter 540 12.5 1.1 Borosilicate
$25.65
530FDL50 pdf Longpass Dichroic Filter 530 50.0 1.1 Borosilicate
$47.96
530FDL25 pdf Longpass Dichroic Filter 530 25.0 1.1 Borosilicate
$27.73
530FDL12 pdf Longpass Dichroic Filter 530 12.5 1.1 Borosilicate
$25.65

57 Items

1

Longpass Dichroic Filters

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