A method for manufacturing a sensor which is constructed for checking value documents, having the steps of: - making available a sensor platform, comprising: ∘ a light source receiving means on which there are provided a multiplicity of light source positions, each of which is constructed for receiving a chip-shaped light source, and ∘ a microlens array which has a multiplicity of microlenses, wherein the microlens array and the light source receiving means can be arranged relative to each other such that each of the light source positions is associated with exactly one of the microlenses, wherein the microlenses are arranged in the microlens array in the same one- or two-dimensional grid as the light source positions are arranged on the light source receiving means, ∘ an imaging optic, and ∘ a detection device, - forming an illumination device by ∘ equipping the light source receiving means with chip-shaped light sources, wherein at several of the light source positions of the light source receiving means there is respectively arranged exactly one chip-shaped light source, and wherein the emission spectra of at least two of the chip-shaped light sources are mutually different, and ∘ arranging the microlens array and the light source receiving means equipped with the chip-shaped light sources relative to each other such that each of the chip-shaped light sources has exactly one of the microlenses of the microlens array associated therewith, wherein each of the microlenses collects only the emission light of exactly one of the chip-shaped light sources, - arranging the illumination device and the imaging optic such that, upon operating of the sensor, the light emitted by the illumination device can be imaged by the imaging optic onto a value document to be checked by the sensor, and - arranging the detection device such that the detection device can detect detection light which, upon operating of the sensor, emanates from the value document illuminated by the illumination device. - making available a sensor platform, comprising: ∘ a light source receiving means on which there are provided a multiplicity of light source positions, each of which is constructed for receiving a chip-shaped light source, and ∘ a microlens array which has a multiplicity of microlenses, wherein the microlens array and the light source receiving means can be arranged relative to each other such that each of the light source positions is associated with exactly one of the microlenses, wherein the microlenses are arranged in the microlens array in the same one- or two-dimensional grid as the light source positions are arranged on the light source receiving means, ∘ an imaging optic, and ∘ a detection device, ∘ a light source receiving means on which there are provided a multiplicity of light source positions, each of which is constructed for receiving a chip-shaped light source, and ∘ a microlens array which has a multiplicity of microlenses, wherein the microlens array and the light source receiving means can be arranged relative to each other such that each of the light source positions is associated with exactly one of the microlenses, wherein the microlenses are arranged in the microlens array in the same one- or two-dimensional grid as the light source positions are arranged on the light source receiving means, ∘ an imaging optic, and ∘ a detection device, - forming an illumination device by ∘ equipping the light source receiving means with chip-shaped light sources, wherein at several of the light source positions of the light source receiving means there is respectively arranged exactly one chip-shaped light source, and wherein the emission spectra of at least two of the chip-shaped light sources are mutually different, and ∘ arranging the microlens array and the light source receiving means equipped with the chip-shaped light sources relative to each other such that each of the chip-shaped light sources has exactly one of the microlenses of the microlens array associated therewith, wherein each of the microlenses collects only the emission light of exactly one of the chip-shaped light sources, ∘ equipping the light source receiving means with chip-shaped light sources, wherein at several of the light source positions of the light source receiving means there is respectively arranged exactly one chip-shaped light source, and wherein the emission spectra of at least two of the chip-shaped light sources are mutually different, and ∘ arranging the microlens array and the light source receiving means equipped with the chip-shaped light sources relative to each other such that each of the chip-shaped light sources has exactly one of the microlenses of the microlens array associated therewith, wherein each of the microlenses collects only the emission light of exactly one of the chip-shaped light sources, - arranging the illumination device and the imaging optic such that, upon operating of the sensor, the light emitted by the illumination device can be imaged by the imaging optic onto a value document to be checked by the sensor, and - arranging the detection device such that the detection device can detect detection light which, upon operating of the sensor, emanates from the value document illuminated by the illumination device.