| 摘要 |
An autostereoscopic multi-user display comprising a sweet-spot unit which is directionally controlled by a tracking and image control device ( 160 ), wherein an illumination matrix ( 120 ) is provided with separately activatable illuminating elements ( 11 . . . 56 ), in addition to an imaging device used to alternatingly image active illuminating elements, for making expanded sweet spots (SR 1 /SR 2 ) visible to various eye positions (EL 1 /ER 1 , EL 2 /ER 2 ) of viewers observing alternating images or a stereoscopic image sequence on a transmissive image matrix ( 140 ) with the aid of directed beams (B 1 R . . . B 5 L). According to the invention, the imaging device comprises an imaging matrix ( 110 ) provided with a plurality of lens elements ( 111 115 ) whose focal length is small in order to image the active illuminating elements in an enlarged manner onto the sweet spots (SR 1 /SR 2 ), and a field lens ( 171 ), which follows the imaging matrix ( 110 ), in order to keep the distances of the activated illuminating elements between adjacent beams (B 1 , B 2 ,B 4 , B 5 ) as constant as possible and in order to assist selection of the directions (D 1 . . . D 5 ) with the illumination matrix ( 120 ) for the beams. |
