| 摘要 |
The present invention relates to a projection arrangement for a head-up display (HUD), at least comprising a vehicle windscreen (1), comprising an outer pane (2) and an inner pane (3) which are connected to one another by way of a thermoplastic intermediate layer (4), with an upper edge (O) and a lower edge (U) and an HUD region (B), wherein the vehicle windscreen (1) has an installation angle in the range from 55° to 75° and wherein the outer pane (2) and the inner pane (3) each have a thickness of at most 5 mm; and a projector (5), which is directed to the HUD region (B) and generates a virtual image which an observer (6) situated within an eyebox (E) is able to perceive, wherein the windscreen (1) has an HUD reference point (G) where a central beam (M) propagating between projector (5) and centre of the eyebox (E) is incident on the inner pane (3), the thickness of the thermoplastic intermediate layer (4) in the vertical profile between the upper edge (O) and the lower edge (U) being changeable, at least in portions, with a wedge angle (α), wherein the wedge angle (α) is changeable, at least in the HUD region (B), and wherein the windscreen (1) has a vertical radius of curvature (R), which is changeable in the vertical profile (V) between the upper edge (O) and the lower edge (U) through the HUD reference point (G), wherein the maximum of the vertical radius of curvature (R) is situated above the HUD reference point (G) in the portion (V') of the profile (V) between the upper edge (O) of the windscreen (1) and the lower edge (BU) of the HUD region (B). |
