Adaptable Lenses for Smart Eyeglasses
AssigneeNewEyes, Inc.
InventorsTridib Ghosh, Apratim Majumder
Life of this patent
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Abstract
An adaptive lens (200) may feature two flexible films (202), (204) secured within a rim (210) and defining a space therebetween which is filled with an appropriate fluid (206). A piston (220), driven by at least one actuator (214a-c), may be attached to one of the films (204) to displace it with respect to the remainder of the assembly. Such action of the piston (220) distorts both films (202), (204) to change the shape of the lens and may be driven by bimorph actuators (214a-c). Distance of displacement may be calculated by measuring a magnetic field created by at least one magnet (222a-c) attached to the piston (220). Feedback control may be used to stabilize the apparatus.
Claims12
An adaptive lens apparatus comprising:
- two flexible films defining a space therebetween;
- a rim about the films;
- a fluid filling the space between the films;
- a piston for displacing one film with respect to the rim;
- at least one actuator for the purpose of displacing the piston;
- at least one magnet mounted upon the piston;
- and
- at least one magnetometer to measure a magnetic field created by the magnet at the location of the at least one magnetometer;
- wherein the measured strength of the magnetic field determines the relative distance the piston has been displaced from the magnetometer.
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Dependencies are inferred from the claim text.