Head up display

A head up display for a vehicle, comprising:

• a vehicle information acquiring unit configured to acquire vehicle information containing a lean of the vehicle in a pitch direction, which is detected by a first posture sensor, and a lean in a roll direction, which is detected by a second posture sensor, the first and second posture sensors being mounted on the vehicle;
• a controller configured to control display of video on a basis of the vehicle information acquired by the vehicle information acquiring unit;
• a video display configured to form the video in accordance with an instruction from the controller;
• a mirror configured to reflect the video formed by the video display to project the video directly on to a windshield having a curvature;
• and
• a mirror driver configured to change an angle and/or a position of the mirror on a basis of an instruction from the controller,
• wherein the controller is configured to adjust at least one of a display state of a virtual image in a display area for the video or the angle and/or the position of the mirror via the mirror driver on a basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information so that the virtual image is superimposed onto a scene and the virtual image can be displayed to a driver,
• wherein the controller is further configured to control display of the video to correct for distortion which occurs due to the curvature of the windshield,
• wherein in a case where the display state of the virtual image is adjusted and an adjusting amount is smaller than a predetermined value, the controller is configured to adjust the display state of the virtual image in the display area for the video on the basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information, and
• wherein in a case where an adjusting amount is equal to or more than a predetermined value, the controller is configured to adjust the angle and/or the position of the mirror via the mirror driver on the basis of the lean in the pitch direction and/or the lean in the roll direction in the vehicle information, and further adjust the display state of the virtual image in the display area for the video.