US 11,747,633 B1
Multi-element electromechanical actuation mechanism for asymmetric optical applications
John Cooke, Bothell, WA (US); Andrew John Ouderkirk, Kirkland, WA (US); Robin Sharma, Woodinville, WA (US); and Katherine Marie Smyth, Seattle, WA (US)
Assigned to META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC
Filed on May 31, 2022, as Appl. No. 17/829,268.
Application 17/829,268 is a division of application No. 16/213,722, filed on Dec. 7, 2018, granted, now 11,378,806.
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 27/01 (2006.01); G02B 3/14 (2006.01); G02B 7/09 (2021.01); G02B 26/00 (2006.01); G02B 7/02 (2021.01); G02B 7/10 (2021.01); G06F 3/01 (2006.01)
CPC G02B 27/0176 (2013.01) [G02B 3/14 (2013.01); G02B 7/09 (2013.01); G02B 26/004 (2013.01); G02B 7/023 (2013.01); G02B 7/102 (2013.01); G02B 2027/0127 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/0159 (2013.01); G06F 3/013 (2013.01)] 18 Claims
OG exemplary drawing
 
10. A system, comprising:
an actuator assembly including:
an actuator configured to produce rotational output,
a plurality of lead screws including a first lead screw and a second lead screw,
a mechanical linkage that intercouples the plurality of lead screws, the mechanical linkage configured to simultaneously rotate the plurality of lead screws based on the rotational output produced by the actuator, and
a first displacement element configured to act upon a first optical element in an optical system through undergoing translational motion in response to rotation of the first lead screw and the second lead screw, wherein the first lead screw and the second lead screw are spaced apart around a perimeter of the first optical element and
a controller including one or more processors configured to:
determine a desired optical characteristic for the optical system;
determine a first target position and a second target position for the first displacement element based on the desired optical characteristic, and
cause power to be applied to the actuator to move part of the first displacement element toward the first target position through rotation of the first lead screw and another part of the first displacement element toward the second target position through rotation of the second lead screw, wherein the first target position and the second target position are different.