Patent ID: 11970060
Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
Field: Optics (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A head-up display, comprising:
an imaging unit for generating an image; and
an optical system for projecting the image onto a projection surface, wherein the optical system comprises at least a first minor, a curved second minor arranged adjacent to the first minor, and a selectively reflective element configured in an optical path between the first mirror and the second minor, wherein the reflective element comprises a direction-selective reflector configured to reflect light for a first range of angles, and configured to be transparent for a second range of angles, and wherein the optical system is configured such that light emitted from the imaging unit is:
directed to pass through the selectively reflective element;
reflected off the first mirror towards the selectively reflective element;
reflected by the selectively reflective element towards the second mirror; and
reflected by the second minor towards the selectively reflective element, and passed through to be directed to the projection surface.