Heads-up display system with optical combiner comprising a removable visor

The system has an optical sequence switch (1) and a removable optical sun visor, where the optical sequence switch is provided as a semi-reflective optical blade for ensuring superposition of images output from the display system on an external landscape. The sun visor is provided as a thin and tinted optical blade. The switch comprises a machine element (30) that wedges itself in another machine element (10) to consist a hinge whose axis of rotation is parallel to a side of the switch. A mechanics part is able to clamp itself in a third machine element (20).