Chromatic confocal measuring device, comprising - a light source which emits light of a plurality of wavelengths, in particular a continuous spectrum, - a first confocal aperture through which light from the light source passes - an illumination imaging optics comprising at least - a first splitting optical element, which is designed as a prism or grating, - wherein the light enters the first splitting optical element in a collimated manner, - as well as a first lens system with at least one first lens, which is spatially separated from the first splitting optical element, wherein the effective focal length (f(λ)) of the first lens system differs significantly for different wavelengths (λ), - such that the illumination-imaging optics are configured to form focal points of different wavelengths at different locations, said locations being along a line segment forming an acute angle to the axis of symmetry of the first lens system - wherein the measuring device is arranged to measure an object which intersects the line segment and reflects at least a part of the light - wherein the measuring device comprises a detection-imaging optics which is spatially separated from the illumination-imaging optics, - and wherein the detection imaging optics is arranged to receive light reflected from the object exclusively from a direction which is different from the direction from which the illumination light is incident on the object, - wherein the detection imaging optics are adapted to image the focal points of all wavelengths onto a second confocal aperture, and - wherein the measuring device comprises a detector which is adapted to detect intensity of the light passing through the second aperture - a light source which emits light of a plurality of wavelengths, in particular a continuous spectrum, - a first confocal aperture through which light from the light source passes - an illumination imaging optics comprising at least - a first splitting optical element, which is designed as a prism or grating, - wherein the light enters the first splitting optical element in a collimated manner, - as well as a first lens system with at least one first lens, which is spatially separated from the first splitting optical element, wherein the effective focal length (f(λ)) of the first lens system differs significantly for different wavelengths (λ), - such that the illumination-imaging optics are configured to form focal points of different wavelengths at different locations, said locations being along a line segment forming an acute angle to the axis of symmetry of the first lens system - wherein the measuring device is arranged to measure an object which intersects the line segment and reflects at least a part of the light - wherein the measuring device comprises a detection-imaging optics which is spatially separated from the illumination-imaging optics, - and wherein the detection imaging optics is arranged to receive light reflected from the object exclusively from a direction which is different from the direction from which the illumination light is incident on the object, - wherein the detection imaging optics are adapted to image the focal points of all wavelengths onto a second confocal aperture, and - wherein the measuring device comprises a detector which is adapted to detect intensity of the light passing through the second aperture