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Lambda Research Optics, Inc. - DFO
Photonics Dictionary

metallic mesh filter

An interference filter in which a very thin metal foil with a periodic array of square holes (inductive mesh) or a thin plastic substrate with an array of metal squares (capacitative mesh) is used as the reflecting interface rather than a thin-film dielectric layer. Two or more meshes are stacked to obtain the desired reflectivity at a given wavelength.
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