Custom Calibration Filters - Didymium & Holmium

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UQG Optics Calibration filters are made from Hoya glass and are used in spectrophotometers as secondary calibration standards for the confirmation of the transmittance and absorption.

They can be absorptive glass filters for the visible or metallic coated for the ultraviolet (UV) and infrared (IR) spectrum. Produced as unmounted filters for OEM customers for calibration references or mounted in cuvette filters holders for spectrophotometers for laboratories as single filters or a range of values supplied boxed.

Calibration filters can also be supplied calibrated within ± 0.5nm, level of uncertainly ± 0.3nm.

UQG Optics stock diameters and squares and can custom make including material options and dimensions.

Please contact our sales team.

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Custom Options

Dimensions: Diameters 5mm to 160mm

Squares/Rectangles 3mm x 3mm to 165mm x 165mm

Thickness Range: 0.50mm to 4mm (subject to dimension)

Options: Mounted in spectrophotometer mounts, calibration certificate to within ± 0.5nm traceable to NPL standard

Materials: Didymium - Hoya V10, Hoya V11, Schott BG20 & Schott BG36

Holmium - Hoya HY1 & Kopp 3131

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