Patent ID: 11906758
Assignee: LEIA INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A multiview backlight comprising:
an array of color-tailored multibeam elements spaced apart from one another across the multiview backlight, a color-tailored multibeam element of the color-tailored multibeam element array comprising a plurality of color regions arranged adjacent to one another within the color-tailored multibeam element and being configured to emit light as a plurality of directional light beams having different colors corresponding to colors of different color regions of the color region plurality;
a light guide configured to guide light along a length of the light guide, color-tailored multibeam elements of the color-tailored multibeam element array being spaced apart from one another along the light guide length and configured to scatter out from the light guide a portion of the guided light as the plurality of directional light beams; and
an optical diffuser configured to spread out directional light beams of the directional light beam plurality from each of the different color regions to provide an image of each of the different color regions having an extent that is comparable to a size of the color-tailored multibeam element,
wherein a diffusion angle of the optical diffuser is equal to a first product of a refractive index of light guide and a size of a color-tailored multibeam element of the color-tailored multibeam element array divided by a second product of a number of the different color regions within the color region plurality of the color-tailored multibeam element and a thickness of the light guide.