An optical detector, comprising: - an optical sensor, having a substrate and at least one photosensitive layer setup disposed thereon, the photosensitive layer setup having at least one first electrode, at least one second electrode and at least one photovoltaic material sandwiched in between the first electrode and the second electrode, wherein the photovoltaic material comprises at least one organic material, wherein the first electrode comprises a plurality of first electrode stripes and wherein the second electrode comprises a plurality of second electrode stripes, wherein the first electrode stripes and the second electrode stripes intersect such that a matrix of pixels is formed at intersections of the first electrode stripes and the second electrode stripes, wherein one of the first electrode and the second electrode is a bottom electrode and wherein the other of the first electrode and the second electrode is a top electrode, wherein the bottom electrode is applied to a substrate, wherein the photovoltaic material is applied to the bottom electrode and at least partially covers the bottom electrode and wherein the top electrode is applied to the photovoltaic material, wherein the top electrode comprises a plurality of metal electrode stripes, wherein the metal electrode stripes are separated by electrically insulating separators, wherein the optical sensor comprises an n-semiconducting metal oxide (174, 176), wherein the electrically insulating separators are deposited on top of the n-semiconducting metal oxide (174, 176), wherein the optical sensor further comprises at least one solid p-semiconducting organic material deposited on top of the n-semiconducting metal oxide (174, 176), the solid p-semiconducting organic material being sub-divided into a plurality of stripeshaped regions by the electrically insulating separators; and - at least one readout device, the readout device comprising a plurality of electrical measurement devices being connected to the second electrode stripes and a switching device for subsequently connecting the first electrode stripes to the electrical measurement devices. - an optical sensor, having a substrate and at least one photosensitive layer setup disposed thereon, the photosensitive layer setup having at least one first electrode, at least one second electrode and at least one photovoltaic material sandwiched in between the first electrode and the second electrode, wherein the photovoltaic material comprises at least one organic material, wherein the first electrode comprises a plurality of first electrode stripes and wherein the second electrode comprises a plurality of second electrode stripes, wherein the first electrode stripes and the second electrode stripes intersect such that a matrix of pixels is formed at intersections of the first electrode stripes and the second electrode stripes, wherein one of the first electrode and the second electrode is a bottom electrode and wherein the other of the first electrode and the second electrode is a top electrode, wherein the bottom electrode is applied to a substrate, wherein the photovoltaic material is applied to the bottom electrode and at least partially covers the bottom electrode and wherein the top electrode is applied to the photovoltaic material, wherein the top electrode comprises a plurality of metal electrode stripes, wherein the metal electrode stripes are separated by electrically insulating separators, wherein the optical sensor comprises an n-semiconducting metal oxide (174, 176), wherein the electrically insulating separators are deposited on top of the n-semiconducting metal oxide (174, 176), wherein the optical sensor further comprises at least one solid p-semiconducting organic material deposited on top of the n-semiconducting metal oxide (174, 176), the solid p-semiconducting organic material being sub-divided into a plurality of stripeshaped regions by the electrically insulating separators; and - at least one readout device, the readout device comprising a plurality of electrical measurement devices being connected to the second electrode stripes and a switching device for subsequently connecting the first electrode stripes to the electrical measurement devices.