US 11,889,763 B2
Actuator with variable cylinder
Andrew John Ouderkirk, Kirkland, WA (US); Spencer Allan Wells, Seattle, WA (US); Christopher Stipe, Woodinville, WA (US); Kenneth Alexander Diest, Kirkland, WA (US); Christopher Yuan Ting Liao, Seattle, WA (US); Nagi Hosni Elabbasi, Needham, MA (US); James Howard Thomas Ransley, Medford, MA (US); Taha Masood, Sammamish, WA (US); Liliana Ruiz Diaz, Redmond, WA (US); and Laura Cressman, Carnation, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed on Feb. 23, 2021, as Appl. No. 17/183,302.
Prior Publication US 2022/0271214 A1, Aug. 25, 2022
Int. Cl. G02B 3/12 (2006.01); H10N 30/20 (2023.01); G02B 26/00 (2006.01); H02N 2/04 (2006.01); H10N 30/05 (2023.01); H10N 30/067 (2023.01); H10N 30/87 (2023.01)
CPC H10N 30/20 (2023.02) [G02B 3/12 (2013.01); G02B 26/004 (2013.01); H02N 2/04 (2013.01); H10N 30/05 (2023.02); H10N 30/067 (2023.02); H10N 30/871 (2023.02)] 20 Claims
OG exemplary drawing
 
1. An actuator comprising:
a stack of electromechanical layers;
an antireflective coating comprising a refractive index gradient; and
electrodes configured to apply an electric field independently across each of the electromechanical layers, wherein an orientation of neighboring electromechanical layers differs by at least approximately 10° and the antireflective coating is disposed over at least a portion of the electrodes opposite to the stack of electromechanical layers.