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AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsWladimir TSCHEKALINSKIJ, Stephan JUNGER
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The present invention relates to an optical filter with nanostructured layers and spectral sensors with layers of such kind. The optical filter has at least two nanostructured layers, each of which forms a transmission grating from grating wires extending parallel to each other. The grating wires of the two transmission gratings intersect each other and are positioned one on top of the other in the optical filter. An optical polarise which polarises incident optical radiation linearly parallel to the grating wires of one of the two transmission gratings is arranged over the transmission gratings. The optical filter can be produced as a bandpass filter with standard semiconductor processes without additional layers or modification of said processes.
An optical filter with nanostructured layers which forms a layer stack having at least
The spectral sensor according to claim 7, characterized in that
The spectral sensor according to claim 8, characterized in that
A spectral sensor having at least a first and a second photodetector (13, PD), in front of which a layer stack is formed from dielectric and structured metal layers, wherein in the layer stack
Dependencies are inferred from the claim text.