Head up display system

A head up display system comprising a projection unit and a combiner wherein the projection unit projects an image onto the combiner, when the combiner is located in a deployed position, for reflection of the image towards the eye position of a user, the direction of image projection together with the direction of image reflection generally defining a projection plane;

• the combiner being mounted rotatably on the projection unit such that the combiner may be reversibly moved between said deployed position and a stowed position in which said reflection does not occur;
• the rotatable mounting taking the form of a pivot having an axis lying substantially in or parallel to the projection plane;
• wherein the pivot axis forms an acute angle with the combiner, such that the combiner in the stowed position is laterally offset from the body of the projection unit and is above the level of the lower surface of the projection unit.