Ophthalmic systems and methods with lateral focus shifting
Eyewear is provided including a frame, and a camera connected with the frame, in which the camera is configured to be controlled by a remote controller. The camera may be configured to capture video and/or a photo. The eyewear may include data storage, and the camera may be connected to the data storage. A wristwatch may be configured to act both as a time piece and a controller of the camera. The eyewear may also include a heads up display and/or a video file player. The eyewear may also include an electro-active lens.
1. An ophthalmic system comprising:
an electro-active lens to shift a transverse location of a focal point of the ophthalmic system and to shift a location of the focal point of the ophthalmic system along an optical axis of the ophthalmic system;
a controller, operably coupled to the electro-active lens, to control the electro-active lens; and
a power supply, operably coupled to the electro-active lens and the controller, to power the electro-active lens and the controller,
wherein the electro-active lens comprises:
a first electro-active lens element to shift the transverse location of the focal point of the ophthalmic system in a first direction orthogonal to the optical axis of the ophthalmic system; and
a second electro-active lens element, in optical series with the first electro-active lens element, to shift the transverse location of the focal point of the ophthalmic system in a second direction orthogonal to the optical axis of the ophthalmic system and different than the first direction.
2. The ophthalmic system of claim 1 , wherein the first electro-active lens element comprises linear electrodes aligned parallel to the second direction and the second electro-active lens element comprises linear electrodes aligned parallel to the first direction.
3. The ophthalmic system of claim 1 , wherein the first electro-active lens element comprises a first layer of liquid crystal material and the second electro-active lens element comprises a second layer of liquid crystal material.
4. The ophthalmic system of claim 1 , wherein the first electro-active lens element is configured to provide variable prismatic power in the first direction and the second electro-active lens element is configured to provide variable prismatic power in the second direction.
5. The ophthalmic system of claim 1 , wherein the first electro-active lens element is configured to be actuated independently of the second electro-active lens element.
6. The ophthalmic system of claim 1 , wherein the electro-active lens is configured to shift the transverse location of the focal point of the ophthalmic system over a range of 0.1 mm to 3.0 mm.
7. An ophthalmic system comprising:
an electro-active lens to shift a transverse location of a focal point of the ophthalmic system and to shift a location of the focal point of the ophthalmic system along an optical axis of the ophthalmic system;
a controller, operably coupled to the electro-active lens, to control the electro-active lens; and
a power supply, operably coupled to the electro-active lens and the controller, to power the electro-active lens and the controller,
wherein the electro-active lens is configured to shift the transverse location of the focal point of the ophthalmic system over a range of 0.5 mm to 2.0 mm.
8. The ophthalmic system of claim 1 , further comprising:
a base optic, in optical communication with the electro-active lens, to provide a fixed optical power.
9. The ophthalmic system of claim 8 , wherein the electro-active lens in embedded in the base optic.
10. A method of operating an ophthalmic system comprising an electro-active lens, the method comprising:
varying an optical power provided by the electro-active lens so as to shift a location of a focal point of the electro-active lens along an optical axis of the electro-active lens; and
varying a prismatic power provided by the electro-active lens so as to shift a transverse location of the focal point of the electro-active lens,
wherein the electro-active lens comprises a first electro-active lens element in optical series with a second electro-active lens element and varying the prismatic power comprises at least one of:
shifting the transverse location of the focal point of the electro-active lens in a first direction orthogonal to the optical axis of the electro-active lens with the first electro-active lens element; or
shifting the transverse location of the focal point of the electro-active lens in a second direction orthogonal to the optical axis of the electro-active lens and different than the first direction with the second electro-active lens element.
11. The method of claim 10 , wherein shifting the transverse location of the focal point of the electro-active lens in the first direction comprises applying a voltage to linear electrodes aligned parallel to the second direction.
12. The method of claim 11 , wherein applying the voltage to the linear electrodes aligned parallel to the second direction comprises phase-wrapping the voltage across the linear electrodes.
13. The method of claim 10 , wherein varying the prismatic power shifts the transverse location of the focal point of the electro-active lens over a range of 0.1 mm to 3.0 mm.
14. The method of claim 10 , wherein varying the prismatic power shifts the transverse location of the focal point of the electro-active lens over a range of 0.5 mm to 2.0 mm.
15. An ophthalmic lens comprising:
a first electro-active lens element to shift a transverse location of a focal point of the ophthalmic lens in a first direction orthogonal to an optical axis of the ophthalmic lens; and
a second electro-active lens element, in optical series with the first electro-active lens element, to shift the transverse location of the focal point of the ophthalmic lens in a second direction orthogonal to the optical axis of the ophthalmic lens and different than the first direction.
16. The ophthalmic lens of claim 15 , wherein the first electro-active lens element comprises linear electrodes aligned parallel to the second direction and the second electro-active lens element comprises linear electrodes aligned parallel to the first direction.
17. The ophthalmic lens of claim 15 , wherein the first electro-active lens element is configured to provide prismatic power in the first direction and the second electro-active lens element is configured to provide prismatic power in the second direction.
18. The ophthalmic lens of claim 15 , wherein the first electro-active lens element is configured to be actuated independently of the second electro-active lens element.