| 摘要 |
The invention relates to a directionally controlled illumination unit that deflects light from activated illumination elements into visibility regions by a transmissive image reproduction means. The visibility regions are tracked by the eyes of different viewers to other positions in front of the display via a tracking unit and image control. In order to avoid a strong correlation of one pixel of the image reproduction means (6) to a deflection element (electro-wetting cell) of a deflection means, the directionally controlled illumination unit comprises a two-dimensional illumination means (1) in front of the image reproduction means arranged in a serial manner in the optical path, the illumination means providing homogeneous light for the image reproduction means, and a deflection means (3) containing at least one field having an arrangement of electro-wetting cells that can be discretely addressed in groups and adjusted with regard to their refractive behavior by the tracking unit and image control (10), and that realize a controllable prism function in order to sequentially and synchronously align the beam concentration with the beam concentration modulated in an alternating manner at the eye position associated with the current modulated stereoscopic image, and further to realize a controllable lens function in order to adjust the visibility regions as a function of the distance of the viewer's eyes to the image reproduction means. |
