| 摘要 |
The present invention relates to a holographic display whereby a holographic image may be viewed. Existing holographic optical element (HOE) arrays are typically recorded as a two dimensional array. Each element in the array modulates the intensity of light that is transmitted through or off it. Each HOE in a simple HOE array auto-stereogram performs only one optical function, namely to redirect light to a particular viewing location in space. The process of producing HOE arrays was limited in a number of respects. The invention overcomes these limitations by providing an intensity modulated holographic optical element array, comprising: an holographic optical element (12) adapted to modify the direction of light reflected from elements in the array; and a means (18) for modulating the intensity of the reflected light. A method of producing an intensity modulated holographic optical element array is also described. The invention may also be used in transmissive holograms.
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