US 12,253,692 B2
Horizontal parallax multiview display and method having light control film
David A. Fattal, Menlo Park, CA (US); and Ming Ma, Menlo Park, CA (US)
Assigned to LEIA Inc., Menlo Park, CA (US)
Filed by LEIA INC., Menlo Park, CA (US)
Filed on Aug. 2, 2021, as Appl. No. 17/392,129.
Application 17/392,129 is a continuation of application No. PCT/US2019/066623, filed on Dec. 16, 2019.
Claims priority of provisional application 62/806,807, filed on Feb. 16, 2019.
Prior Publication US 2021/0368158 A1, Nov. 25, 2021
Int. Cl. G02B 30/33 (2020.01); G02B 5/18 (2006.01); G02B 27/01 (2006.01); G02B 27/42 (2006.01); G02B 30/32 (2020.01); G02F 1/29 (2006.01); H04N 13/312 (2018.01); H04N 13/32 (2018.01); H04N 13/349 (2018.01)
CPC G02B 30/33 (2020.01) [G02B 5/1819 (2013.01); G02B 27/4272 (2013.01); G02B 30/32 (2020.01); G02F 1/29 (2013.01); H04N 13/312 (2018.05); H04N 13/32 (2018.05); H04N 13/349 (2018.05); G02B 27/0101 (2013.01); G02B 2027/0134 (2013.01); G02B 2207/123 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A horizontal parallax multiview display comprising:
a light guide configured to guide light;
a plurality of slanted multibeam columns distributed across the light guide and being configured to scatter out guided light from within the light guide as directional light beams having principal angular directions corresponding to different view directions of the horizontal parallax multiview display;
an array of light valves representing pixels of the horizontal parallax multiview display, the light valve array being configured to modulate the directional light beams as a multiview image having horizontal parallax; and
a light control film having a slanted light control axis aligned with a slanted multibeam column of the slanted multibeam column plurality, the light control film comprising parallel micro-baffles configured to control a view angle of the multiview image in a direction orthogonal to the horizontal parallax by allowing directional light beams having principal angular directions in a specified angular range to pass without redirection through the parallel micro-baffles and blocking directional light beams having principal angular directions outside the specified angular range.