Disclosed is an organicinorganic composite separator including: a porous substrate having pores; and a porous active layer containing a mixture of inorganic particles and a binder polymer with which at least one surface of the porous substrate is coated. The concave mirror is sub-divided into a number of annular or honeycomb mirror segments, which can be displaced independently in relation to one another with the aid of piezoelectric drive elements. Selective ultraviolet curing of a dielectric material can be performed so as to expel a porogen from the region desired to have low dielectric constant. The semiconductor component can be used in an electronic component and a sensor system.