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US 12,111,475 B2Granted
Tunable cylindrical lenses and head-mounted display including the same
AssigneeMagic Leap, Inc.
InventorsAndrew Ian Russell, Joshua Naaman Haddock
Life of this patent
Estimating the term…
Abstract
Systems include three optical elements arranged along an optical axis each having a different cylinder axis and a variable cylinder refractive power. Collectively, the three elements form a compound optical element having an overall spherical refractive power (SPH), cylinder refractive power (CYL), and cylinder axis (Axis) that can be varied according to a prescription (Rx).
Claims16
A method, comprising:
- varying a cylinder refractive power of a first refractive element of a first optical element, the first refractive element having a first cylinder axis associated with the first refractive element along a first radial direction orthogonal to an optical axis;
- varying a cylinder refractive power of a second refractive element of a second optical element, 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;
- varying a cylinder refractive power of a third refractive element of a third optical element, the third refractive element having a third cylinder axis associated with the third refractive element along a third radial direction orthogonal to the optical axis,
- wherein an effect of varying the cylinder refractive power of the first refractive element, the second refractive element, and the third refractive element is to provide an optical correction having an overall spherical refractive power (SPH), cylinder refractive power (CYL), and cylinder axis (Axis) according to a prescription (Rx).
1 more element
A method, comprising:
- adjusting a spherical refractive power (SPH) of a first optical element;
- and
- adjusting a SPH, a cylinder refractive power (CYL), and a cylinder axis (Axis) of a second optical element according to a prescription (Rx), wherein the first optical element has a variable SPH, and the second optical element has a variable SPH, a variable CYL, and a variable Axis, wherein the first optical element and the second optical element are arranged on different sides of a see-through display.
Dependencies are inferred from the claim text.