Dense Viewpoints and Light-Field Display with High Grayscale Based on Joint Encoding of Double-Layer Halftone Images(Invited)
A light-field display device based on dual-layer halftone image joint encoding is proposed herein,consisting of collimated backlight,a double-layer film,a filter,an aspherical cylindrical lens array,and a vertical diffusion film.The double-layer film is used for displaying halftone light-field-encoded images;the filter is used for generating red,green,and blue channels;and the aspherical cylindrical lens array and the vertical diffusion film are used for controlling the direction of light emission.Dense viewpoints and high-grayscale light-field display are obtained with the double-layer film.The number of viewpoints is increased through light-field encoding,and light-field-encoded images are synthesized on double-layer film structures using a halftone image joint optimization method.Thus,the grayscale range is expanded.In a verification experiment,a three-dimensional light-field display effect with dense viewpoints,high grayscale,and color was realized(165 viewpoints with a grayscale of 256×256×256).
3D display systemlight-field displayvoxelgrayscale level
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