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Interference Filter
An Interference Filter reflects one or more spectral bands or lines and transmits others, while maintaining a nearly zero coefficient of absorption for all wavelengths of interest. It consists of multiple thin layers of dielectric material having different refractive indices. There also may be metallic layers.

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Specification:

 

Material

Fused Silica

Diameter Tolerance

+0.0,-0.2 mm

Ring Diameter (φ)

25.4±0.2 mm

Ring Thickness (T)

6 mm

Surface Quality

60-40 scratch and dig

FWHM

10 nm

Clear Aperture

>φ20 mm

Wavelength Tolerance

±2nm

Mounting Material

Black anodized aluminum

Note: Central wavelength from 200 nm to 1000 nm are available upon your request. FWHM 15nm, 20nm and 30nm are also available upon your request.

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