Delta Optical Thin Film A/S
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Frequently Asked Questions

A CVF is an interference narrow-pass filter that is deposited on circular substrates, called segments. The film thickness and wavelength of peak transmittance vary linearly and continuously with angular position on the segment.

The CVF can be manufactured in any wavelength range from 0.4µm in the visible region of the spectrum up to 14.3 µm in the infrared.

The key features of the CVF include full wavelength scanning from visible to long wave IR, successive discrete wavelength selection in the range of the segment, instrument design flexibility and versatility, and high volume manufacturing.

The CVF segment rotation, in a way that the beam traces a circumferential path on it, provides a continuous scan of its complete wavelength range.

The spectral resolution element size on the CVF varies between one and two millimeters.

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