US 11,988,863 B2
Multibeam backlight, multiview display, and method having shaped-edge multibeam elements
David A. Fattal, Menlo Park, CA (US); and Joseph D. Lowney, Menlo Park, CA (US)
Assigned to LEIA INC., Menlo Park, CA (US)
Filed by LEIA INC., Menlo Park, CA (US)
Filed on Apr. 23, 2022, as Appl. No. 17/727,735.
Application 17/727,735 is a continuation of application No. PCT/US2019/059273, filed on Oct. 31, 2019.
Prior Publication US 2022/0244449 A1, Aug. 4, 2022
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0058 (2013.01) [G02B 6/0055 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multibeam backlight comprising:
a light guide configured to guide light in a propagation direction along a length of the light guide as guided light, and
a plurality of multibeam elements spaced apart from one another across the light guide and configured to scatter out the guided light as emitted light, a multibeam element of the multibeam element plurality having a shaped edge oriented orthogonal to the propagation direction,
wherein a shape of the shaped edge of the multibeam element is configured to disperse spurious diffraction components in the emitted light associated with an interaction between the guided light and the multibeam element.