US Patent 7880253 Integrated optical filter

The disclosure relates to an integrated circuit comprising at least one photosensitive cell. The cell includes a photosensitive element, an input face associated with the said photosensitive element, an optical filter situated in at least one optical path leading to the photosensitive element and an interconnection part situated between the photosensitive element and the input face. The optical filter is disposed between the photosensitive element and the surface of the interconnection part closest to the input face. In particular, the optical filter can be disposed within the interconnection part. The disclosure also proposes that the filter be formed using a glass comprising cerium sulphide or at least one metal oxide.