US 12,140,777 B2
Static multiview display and method
David A. Fattal, Mountain View, CA (US); Xuejian Li, Menlo Park, CA (US); and Francesco Aieta, Menlo Park, CA (US)
Assigned to LEIA INC., Menlo Park, CA (US)
Filed by LEIA INC., Menlo Park, CA (US)
Filed on Dec. 12, 2022, as Appl. No. 18/079,187.
Application 18/079,187 is a continuation in part of application No. 16/453,881, filed on Jun. 26, 2019, abandoned.
Application 16/453,881 is a continuation of application No. PCT/US2017/053817, filed on Sep. 27, 2017.
Claims priority of provisional application 62/442,982, filed on Jan. 6, 2017.
Prior Publication US 2023/0107214 A1, Apr. 6, 2023
Int. Cl. G02B 27/10 (2006.01); F21V 8/00 (2006.01); G02B 5/18 (2006.01)
CPC G02B 27/106 (2013.01) [G02B 5/1861 (2013.01); G02B 6/003 (2013.01); G02B 6/0035 (2013.01); G02B 6/0068 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A static multiview display comprising:
a light guide configured to guide light beams;
a light source at an input location on the light guide, the light source being configured to provide within the light guide a plurality of guided light beams having different radial directions from one another;
a plurality of diffraction gratings configured to emit directional light beams representing different individual view pixels of a static multiview image, each diffraction grating of the diffraction grating plurality being configured to scatter out from a single radially directed guided light beam of the guided light beam plurality a corresponding single directional light beam toward a different one of the individual view pixels; and
one or both of an absorbing layer at a sidewall of light guide and a slanted sidewall of the light guide, the absorbing layer being configured to absorb guided light beams incident on the sidewall and the slanted sidewall having a slant angle configured to direct guided light beams reflected by the slanted sidewall away from the diffraction grating plurality;
wherein an emission pattern of a directional light beam of the directional light beams is wider in a direction parallel to a direction of propagation of the guided light beam plurality than in a direction perpendicular to the direction of propagation of the guided light beam plurality.