The invention relates to an X-ray detector device (10) for detection of X-ray radiation at an inclined angle relative to the X-ray radiation, an X-ray imaging system (1), an X-ray imaging method, and a computer program element for controlling such an X-ray imaging system for performing such method and a computer readable medium having stored such computer program element. The X-ray detector device (10) comprises a cathode surface (11) and an anode surface (12). The cathode surface (11) and the anode surface (12) are displaced by a separation layer (13) allowing charge transport (T) between the cathode surface (11) and the anode surface (12) in response to X-ray radiation incident during operation on the cathode surface (11). The anode surface (12) is segmented into anode pixels (121) and the cathode surface (11) is segmented into cathode pixels (111). At least one of the cathode pixels (111) is assigned to at least one of the anode pixels (121) in a coupling direction (C) inclined relative to the cathode surface (11). At least one of the cathode pixels (111) is configured to be at a voltage offset ΔU relative to an adjacent cathode pixel and at least one of the anode pixels (121) is configured to be at a voltage offset ΔU relative to an adjacent anode pixel (121). The voltage offset ΔU is configured to converge the charge transport (T) in a direction parallel to the coupling direction (C).