An x-ray imaging apparatus for producing an x-ray image of an object, comprising: - a support frame to which an x-ray source and an x-ray detector are connected, wherein the x-ray source and the x-ray detector define between them an object space for the object to be examined, the x-ray source being configured to emit from a focal spot an x-ray beam with a main direction into the object space, the x-ray detector comprising an array of pixels sensitive to the x-ray radiation, the x-ray imaging apparatus further comprising a collimator arranged in proximity to the x-ray source and in the path of the x-ray beam between the x-ray source and the object to be examined, the collimator comprising one or more collimator bodies defining a plurality of passages of the collimator, the passages having respective central directions defining a common focal point of the collimator on the side of the x-ray source, characterised in that, the plurality of passages is a 2D array of passages seen in a plane perpendicular to the main direction of the x-ray beam, wherein the collimator comprises a set of a first collimator body and a second collimator body arranged in series with the first collimator body, wherein the first collimator body comprises a first stack of spaced apart first plates with respective first slit spaces there between, said first slit spaces being directed towards a common first imaginary line, and wherein the second collimator body comprises a second stack of spaced apart second plates with respective second slit spaces there between, wherein said second slit spaces are directed towards a common second imaginary line, the first and second common imaginary lines crossing one another in the common focal point, so that the first and second slit spaces together form said plurality of passages of the collimator. - a support frame to which an x-ray source and an x-ray detector are connected, wherein the x-ray source and the x-ray detector define between them an object space for the object to be examined, the x-ray source being configured to emit from a focal spot an x-ray beam with a main direction into the object space, the x-ray detector comprising an array of pixels sensitive to the x-ray radiation, the x-ray imaging apparatus further comprising a collimator arranged in proximity to the x-ray source and in the path of the x-ray beam between the x-ray source and the object to be examined, the collimator comprising one or more collimator bodies defining a plurality of passages of the collimator, the passages having respective central directions defining a common focal point of the collimator on the side of the x-ray source, characterised in that, the plurality of passages is a 2D array of passages seen in a plane perpendicular to the main direction of the x-ray beam, wherein the collimator comprises a set of a first collimator body and a second collimator body arranged in series with the first collimator body, wherein the first collimator body comprises a first stack of spaced apart first plates with respective first slit spaces there between, said first slit spaces being directed towards a common first imaginary line, and wherein the second collimator body comprises a second stack of spaced apart second plates with respective second slit spaces there between, wherein said second slit spaces are directed towards a common second imaginary line, the first and second common imaginary lines crossing one another in the common focal point, so that the first and second slit spaces together form said plurality of passages of the collimator.