US 11,852,829 B2
Tunable cylindrical lenses and head-mounted display including the same
Andrew Ian Russell, Plantation, FL (US); and Joshua Naaman Haddock, Plantation, FL (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Appl. No. 18/007,244
Filed by Magic Leap, Inc., Plantation, FL (US)
PCT Filed Aug. 6, 2021, PCT No. PCT/US2021/045110
§ 371(c)(1), (2) Date Jan. 27, 2023,
PCT Pub. No. WO2022/032198, PCT Pub. Date Feb. 10, 2022.
Claims priority of provisional application 63/062,746, filed on Aug. 7, 2020.
Prior Publication US 2023/0266592 A1, Aug. 24, 2023
Int. Cl. G02B 27/01 (2006.01); G02B 27/00 (2006.01); G02B 27/02 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 27/0075 (2013.01); G02B 27/026 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a first optical element comprising a first refractive element arranged along an optical axis, and a first actuator arranged to vary a cylinder refractive power of the first refractive element in response to a first control signal, the first refractive element having a first cylinder axis associated with the first refractive element along a first radial direction orthogonal to the optical axis;
a second optical element comprising a second refractive element arranged along the optical axis, and a second actuator arranged to vary a cylinder refractive power of the second refractive element in response to a second control signal, the second refractive element having a second cylinder axis associated with the second refractive element along a second radial direction orthogonal to the optical axis;
a third optical element comprising a third refractive element arranged along the optical axis, and a third actuator arranged to vary a cylinder refractive power of the third refractive element along a third radial direction orthogonal to the optical axis in response to a third control signal, where the first, second, and third radial directions are different; and
an electronic controller in communication with the first, second, and third actuators, the electronic controller being configured, during operation, to provide the first, second and third control signals to the first, second, and third actuators, respectively, so that the first, second, and third refractive elements collectively form an optical element having an overall spherical refractive power (SPH), cylinder refractive power (CYL), and cylinder axis (Axis) according to a prescription (Rx).