| 摘要 |
A method and a device for encoding and reconstructing computer-generated video holograms using a conventional LC display: it provides holographic reconstruction of three-dimensional scenes using electronically controllable pixel in a holographic array ( 3 ) with a conventional resolution, and is reasonably free from flickering and cross-talk. Reconstruction is in real time, and for both eyes at the same time, over a large viewing zone. The method takes advantage of an optical focusing means ( 2 ) in order to image vertically coherent light emitted by a line light source ( 1 ) into viewing windows ( 8 R, 8 L) after modulation by the pixel array ( 3 ). The holographic reconstruction ( 11 ) of the scene is rendered visible from viewing windows ( 8 R, 8 L) for both eyes of an observer by way of diffraction at the pixels. According to the invention, the controllable pixels are disposed in vertical pixel columns ( 15, 16 ), which encode separate holograms of the same scene for each of the viewer's eyes (R, L), where said holograms are one-dimensional in the vertical direction and horizontally interleaved. An image separation means ( 7 ) with separating elements arranged parallel to the pixel columns reveals the respective pixel columns ( 15, 15' or 16, 16' ) for one eye and covers them for the other eye.
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