US 12,326,580 B2
Multiview display and method using effective light sources
Thomas Hoekman, Menlo Park, CA (US); and David A. Fattal, Mountain View, CA (US)
Assigned to LEIA Inc., Menlo Park, CA (US)
Appl. No. 18/720,449
Filed by LEIA Inc., Menlo Park, CA (US)
PCT Filed Feb. 24, 2022, PCT No. PCT/US2022/017767
§ 371(c)(1), (2) Date Jun. 14, 2024,
PCT Pub. No. WO2023/163706, PCT Pub. Date Aug. 31, 2023.
Prior Publication US 2025/0060611 A1, Feb. 20, 2025
Int. Cl. G02B 30/33 (2020.01); F21V 8/00 (2006.01); G02B 3/00 (2006.01); H04N 13/32 (2018.01); H04N 13/351 (2018.01)
CPC G02B 30/33 (2020.01) [G02B 3/0056 (2013.01); G02B 6/005 (2013.01); H04N 13/32 (2018.05); H04N 13/351 (2018.05)] 22 Claims
OG exemplary drawing
 
1. A multiview display comprising:
a semi-collimated backlight configured to emit semi-collimated light having a predetermined collimation factor;
an array of light valves arranged as multiview pixels; and
an array of lenses disposed between the light valve array and the semi-collimated backlight, each lens of the array of lenses corresponding to a different multiview pixel and being configured to provide from the semi-collimated light an effective light source at a focal plane of the lens and having a size between one quarter and two times a size of a light valve of the light valve array,
wherein the effective light source is configured to illuminate the corresponding different multiview pixel with directional light beams having directions of views of the multiview display.