| 摘要 |
The projection unit comprises a lighting unit, an optical element arranged downstream of the lighting unit, and an imaging unit arranged downstream of the optical element, wherein a circular polarization filter and a linear polarization filter arranged downstream of the circular polarization filter are arranged in the beam path between the optical element and a light emitting area. The method is used to operate a project unit for a head-up display, wherein the head-up display comprises a lighting unit, an optical element arranged downstream of the lighting unit, and an imaging unit arranged downstream of the optical element, wherein sunlight entering the project unit is first linearly polarized in a first polarization direction by means of a first polarization means, the sunlight is then circularly polarized by means of a second polarization means, then partially reflected by the optical element, then linearly polarized in a second polarization direction by means of the second polarization means, wherein the first polarization direction and the second polarization direction are substantially perpendicular to each other and the reflected light linearly polarized in the second polarization direction is absorbed by means of the first polarization means. |
