Filter element for a spectral sensor and method for producing a filter element for a spectral sensor

摘要

The invention relates to a filter element (102) for a spectral sensor (100). The filter element (102) comprises at least one filter layer (104) of a two-dimensional material, wherein the filter layer (104) has at least one grating structure (112) for absorbing electromagnetic radiation in an absorption wavelength range (113). Furthermore, the filter layer (104) comprises a first electrode (106) and a second electrode (108), wherein the filter layer (104) is arranged at least in sections between the first electrode (106) and the second electrode (108). The absorption wavelength region (113) is displaceable by applying a voltage (V1, V2, V3) between the first electrode (106) and the second electrode (108) depending on the voltage (V1, V2, V3).