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Cut-off Linear Variable Filter

Cut-off linear variable filter is an interference filter whose cut-off wavelength varies linearly with physical position. Continuous gradient based on film thickness, utilizing the interference effect of light to achieve wavelength selection. Continuous and adjustable spectral filtering is achieved through a single filter, greatly simplifying system design and serving as a powerful tool for miniaturization, integration, and dynamic spectral analysis of equipment. From miniature spectrometers to multispectral imaging, from industrial sorting to scientific research equipment, its applications can be found.

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Specification of Cut-off Linear Variable Filter


Wavelength

(nm)

Peak transmittance

(%)

Depth of cut-off

Pass band

Linear rate of variable

(nm/mm)

NOTE

400-800

≥85

≥OD3

Short pass

7


Customized be met

400-800

≥85

≥OD3

Long pass

7

380-850

≥85

≥OD3

Long pass

22.3


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