Institute for Photometry and Radiometry
Optical Filters
Inphora offers calculation, design and production of unique optical glass filters matched to the customer’s requested parameters or to fit a specific application. Inphora is a leader in the design and production of all-glass filters. All-glass filters have significant advantages over thin film designs including longer life, long term spectral stability, insensitivity to temperature, and a wider field of view. Our filters have excellent surface and internal quality with the ability to hold to very tight scratch/dig specs. Inphora optical filters provide reliable quality you can count on.
Photometric Glass Filters
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CIE V(λ) function sensitivity.
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Filters are matched to a spectral sensitivity function provided by the customer (Si photocell, CCD camera or other type of detectors)
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Diameter and thickness can be adapted to the customers specific application.
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AR coating may be added.
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Edges may be painted black to block light from entering from the side.
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Colorimetric Glass Filters
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CIE tristimulus function sensitivity.​
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Available in sets of X, Y, Z or X1, X2, Y, Z bars.
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Filters are matched to a spectral sensitivity function provided by the customer (Si photocell, CCD camera or other type of detectors)
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Diameter and thickness can be adapted to the customers specific application.
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AR coating may be added.
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Edges may be painted black to block light from entering from the side.
Radiometric Glass Filters
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Uniform sensitivity within a given spectral range.
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Available in neutral density (ND0, ND1, ND2, ND3, ND4), IR cut-off, and IR pass.
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Diameter and thickness can be adapted to the customers specific application.
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AR coating is standard.
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Edges may be painted black to block light from entering from the side.