Method for Operating a Visual Field Display Device for a Motor Vehicle

A method for operating a visual field display apparatus for a motor vehicle, which visual field display apparatus is designed to generate a projection light beam with display content and to project the display content onto a partly transparent reflecting projection screen of the motor vehicle such that a virtual display image superimposed into a visual field of a user is generated therebehind,

• the method comprising:
• ascertaining vertical image element edges, or image element edges with a vertical component, in the virtual display image to be superimposed;
• and
• tilting the image element edges thus ascertained to a respective tilt angle with respect to a vertical direction, which tilt angle is adapted in such a way that horizontally offset double images of the respective image element edges, which are caused by a double reflection of the projection light beam at two optical interfaces of the projection screen, are overlaid for the user in the virtual display image and consequently appear substantially sharp.

A control unit for a visual field display apparatus, comprising:

• a processor and associated memory operatively configured to automatically:
• ascertain vertical image element edges, or image element edges with a vertical component, in the virtual display image to be superimposed;
• and
• tilt the image element edges thus ascertained to a respective tilt angle with respect to a vertical direction, which tilt angle is adapted in such a way that horizontally offset double images of the respective image element edges, which are caused by a double reflection of the projection light beam at two optical interfaces of the projection screen, are overlaid for the user in the virtual display image and consequently appear substantially sharp.