| 摘要 |
Apparatus and method for the display of autostereoscopic images, in which two or more perspective views are generated by a single transmissive display screen, such as an active matrix LCD, is provided. A structured light source behind the screen directs light through different sets of display elements to correspondingly different viewing zones. The structured source comprises, in addition to two crossed arrays of cylindrical convergent optical elements, two linear arrays of polarisation altering elements which, in conjunction with the convergent arrays and the first polariser of the LCD, prevent light from passing through a particular set of display elements and reaching the wrong viewing zone. In some embodiments one or both of the polarisation altering arrays may be programmed. Observer co-ordinate data permits the correct viewing zone to be co-located with each of the observer's corresponding eyes, including means for accommodating changes in the observer's distance from the display. Means for the displayed image to adapt to the observer's location is also provided. All or part of the display may provide conventional two-dimensional images at the screen's full resolution.
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