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.
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
| 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 |
$28.22
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| 521FDN25 pdf | Bandblocking Dichroic Filter | 572 | 521 | 470 | 25.0 | 1.1 | Borosilicate |
$30.51
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| 521FDN50 pdf | Bandblocking Dichroic Filter | 572 | 521 | 470 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
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| 530FDN12 pdf | Bandblocking Dichroic Filter | 611 | 530 | 447 | 12.5 | 1.1 | Borosilicate |
$28.22
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| 530FDN25 pdf | Bandblocking Dichroic Filter | 611 | 530 | 447 | 25.0 | 1.1 | Borosilicate |
$30.51
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| 530FDN50 pdf | Bandblocking Dichroic Filter | 611 | 530 | 447 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
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| 531FDN12 pdf | Bandblocking Dichroic Filter | 600 | 531 | 460 | 12.5 | 1.1 | Borosilicate |
$28.22
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| 531FDN25 pdf | Bandblocking Dichroic Filter | 600 | 531 | 460 | 25.0 | 1.1 | Borosilicate |
$30.51
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| 531FDN50 pdf | Bandblocking Dichroic Filter | 600 | 531 | 460 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
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| 535FDN12 pdf | Bandblocking Dichroic Filter | 635 | 535 | 435 | 12.5 | 1.1 | Borosilicate |
$28.22
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| 535FDN25 pdf | Bandblocking Dichroic Filter | 635 | 535 | 435 | 25.0 | 1.1 | Borosilicate |
$30.51
|
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| 535FDN50 pdf | Bandblocking Dichroic Filter | 635 | 535 | 435 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
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| 536FDN12 pdf | Bandblocking Dichroic Filter | 612 | 536 | 459 | 12.5 | 1.1 | Borosilicate |
$28.22
|
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| 536FDN25 pdf | Bandblocking Dichroic Filter | 612 | 536 | 459 | 25.0 | 1.1 | Borosilicate |
$30.51
|
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| 536FDN50 pdf | Bandblocking Dichroic Filter | 612 | 536 | 459 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
|
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| 537FDN12 pdf | Bandblocking Dichroic Filter | 585 | 537 | 490 | 12.5 | 1.1 | Borosilicate |
$28.68
|
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| 537FDN25 pdf | Bandblocking Dichroic Filter | 585 | 537 | 490 | 25.0 | 1.1 | Borosilicate |
$31.28
|
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| 537FDN50 pdf | Bandblocking Dichroic Filter | 585 | 537 | 490 | 50.0 | 50.0 | 1.1 | Borosilicate |
$54.28
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| 538FDN12 pdf | Bandblocking Dichroic Filter | 628 | 538 | 449 | 12.5 | 1.1 | Borosilicate |
$28.22
|
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| 538FDN25 pdf | Bandblocking Dichroic Filter | 628 | 538 | 449 | 25.0 | 1.1 | Borosilicate |
$30.51
|
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| 538FDN50 pdf | Bandblocking Dichroic Filter | 628 | 538 | 449 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
|
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| 539FDN12 pdf | Bandblocking Dichroic Filter | 615 | 539 | 462 | 12.5 | 1.1 | Borosilicate |
$28.22
|
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| 539FDN25 pdf | Bandblocking Dichroic Filter | 615 | 539 | 462 | 25.0 | 1.1 | Borosilicate |
$30.51
|
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| 539FDN50 pdf | Bandblocking Dichroic Filter | 615 | 539 | 462 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
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| 540FDN12 pdf | Bandblocking Dichroic Filter | 630 | 540 | 450 | 12.5 | 1.1 | Borosilicate |
$28.68
|
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| 540FDN25 pdf | Bandblocking Dichroic Filter | 630 | 540 | 450 | 25.0 | 1.1 | Borosilicate |
$31.28
|
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| 540FDN50 pdf | Bandblocking Dichroic Filter | 630 | 540 | 450 | 50.0 | 50.0 | 1.1 | Borosilicate |
$53.52
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| 542FDN12 pdf | Bandblocking Dichroic Filter | 612 | 542 | 472 | 12.5 | 1.1 | Borosilicate |
$28.22
|
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| 542FDN25 pdf | Bandblocking Dichroic Filter | 612 | 542 | 472 | 25.0 | 1.1 | Borosilicate |
$30.51
|
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| 542FDN50 pdf | Bandblocking Dichroic Filter | 612 | 542 | 472 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
|
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| 543FDN12 pdf | Bandblocking Dichroic Filter | 625 | 543 | 461 | 12.5 | 1.1 | Borosilicate |
$28.22
|
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| 543FDN25 pdf | Bandblocking Dichroic Filter | 625 | 543 | 461 | 25.0 | 1.1 | Borosilicate |
$30.51
|
|||
| 543FDN50 pdf | Bandblocking Dichroic Filter | 625 | 543 | 461 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
|
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| 550FDN12 pdf | Bandblocking Dichroic Filter | 630 | 550 | 470 | 12.5 | 1.1 | Borosilicate |
$28.22
|
|||
| 550FDN25 pdf | Bandblocking Dichroic Filter | 630 | 550 | 470 | 25.0 | 1.1 | Borosilicate |
$30.51
|
|||
| 550FDN50 pdf | Bandblocking Dichroic Filter | 630 | 550 | 470 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
|
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| 552FDN12 pdf | Bandblocking Dichroic Filter | 645 | 552 | 459 | 12.5 | 1.1 | Borosilicate |
$28.22
|
|||
| 552FDN25 pdf | Bandblocking Dichroic Filter | 645 | 552 | 459 | 25.0 | 1.1 | Borosilicate |
$30.51
|
|||
| 552FDN50 pdf | Bandblocking Dichroic Filter | 645 | 552 | 459 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
|
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| 554FDN12 pdf | Bandblocking Dichroic Filter | 639 | 554 | 470 | 12.5 | 1.1 | Borosilicate |
$28.22
|
|||
| 554FDN25 pdf | Bandblocking Dichroic Filter | 639 | 554 | 470 | 25.0 | 1.1 | Borosilicate |
$30.51
|
|||
| 554FDN50 pdf | Bandblocking Dichroic Filter | 639 | 554 | 470 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
|
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| 575FDN12 pdf | Bandblocking Dichroic Filter | 690 | 575 | 460 | 12.5 | 1.1 | Borosilicate |
$28.22
|
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| 575FDN25 pdf | Bandblocking Dichroic Filter | 690 | 575 | 460 | 25.0 | 1.1 | Borosilicate |
$30.51
|
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| 575FDN50 pdf | Bandblocking Dichroic Filter | 690 | 575 | 460 | 50.0 | 50.0 | 1.1 | Borosilicate |
$52.75
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