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Narrow Bandpass Filter

Narrowband filter is a special type of bandpass filter, but its performance requirements are more extreme and precise. It only allows light within a very narrow wavelength range to pass through, while strongly blocking all light outside of that range. Applied to fluorescence microscopy, astrophotography, Raman spectroscopy, flow cytometry, fluorescence detection and biosensing, laser cleaning and fluorescence excitation.

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Features of Narrow Bandpass Filter

Bandwidth refers to the distance between two positions in the passband whose transmittance is half of the peak transmittanceThe above six parameters must be taken into account in the use and selection of narrow-band filters. Different performance indexes require different manufacturing costs of filters.

Features of Narrow Bandpass Filter

Specification of Narrow Bandpass Filter


Material

Optical glass BK7/ Fused silica

Surface quality

40/20, 20/10

Thickness range

0.5mm-5.0mm or upon the customer's request

FWHM

20nm, 30nm, 40nm, 50nm, 60nm or upon the customer's request

Wavelength range

340nm, 380nm, 405nm, 450nm, 492nm, 510nm, 546nm, 578nm, 600nm, 620nm, 630nm, 650nm, 850nm, 805nm, 940nm, 1064nm

OD

OD3, OD4, OD5

Dimension

3mm-200mm


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