Backlight, multiview display and method having a grating spreader

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United States of America Patent

PATENT NO 11378729
APP PUB NO 20210223454A1
SERIAL NO

17225963

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Abstract

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A backlight and a multiview display employ a light guide having angle-preserving scattering feature and a grating spreader. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The grating spreader includes a diffraction grating and is configured to convert light provided by a light source into spatio-angularly homogenous light to be guided as the guided light. The multiview display includes an array of light valves as well as the angle-preserving scattering feature that includes a multibeam element having a size that is comparable to a size of a light valve of the light valve array.

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Patent Owner(s)

  • LEIA INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fattal, David A Menlo Park, US 271 4058
Lowney, Joseph D Menlo Park, US 6 1

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