Glasses-free 3d display for multiple viewers using imprinted sub-wavelength gratings
AssigneeHewlett-Packard Developement Company, L.P.
InventorsJames A. Brug, David A. Fattal, Huei Pei Kuo
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Abstract
A light field display for providing continuous 3D images to viewers at multiple views is provided. The light field display includes a pixel layer having a plurality of pixel layer elements, a resonant subwavelength lens layer having a plurality of resonant subwavelength lenses and a circuit board connected to the pixel layer and the resonant subwavelength lens layer. Each resonant subwavelength lens in the resonant subwavelength lens layer is integrated with an element in the pixel layer. The element may be either a pixel or a subpixel, such that each image view may be provided per pixel or subpixel in the pixel layer.
Claims20
A light field display for providing continuous 3D images to viewers at multiple views, comprising:
- a pixel layer comprising a plurality of pixel layer elements;
- a resonant subwavelength lens layer comprising a plurality of resonant subwavelength lenses, each resonant subwavelength lens integrated with an element in the pixel layer;
- and
- a circuit board connected to the pixel layer and the resonant subwavelength lens layer.
A method to provide continuous 3D images to multiple viewers, comprising:
- fabrication a resonant subwavelength lens layer comprising a plurality of resonant subwavelength lenses;
- fabricating a pixel layer comprising a plurality of pixel layer elements;
- integrating each resonant subwavelength lens in the resonant subwavelength lens layer with a pixel layer element in the pixel layer;
- and
- providing multiple images views to the multiple viewers, with an image view provided for each pixel layer element.
The method of 11, wherein the pixel layer comprises an active matrix array, an emitter array, and a plurality of pixels.
A resonant subwavelength lens layer for use in a light field display having a pixel layer, the resonant subwavelength lens layer comprising:
- a substrate having a planar surface;
- and
- a plurality of resonant subwavelength lenses formed on the substrate, each resonant subwavelength lens integrated with an element in the pixel layer and having a high contrast subwavelength grating composed of a pattern of posts with varying dimensions that extend from the substrate deflect transmitted light at a given angle to provide an image view per element in the pixel layer.
Dependencies are inferred from the claim text.