Adaptively focusing extra-ocular vision prostheses
First Claim
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1. A vision prosthesis comprising:
- an actuator in communication with an extra-ocular lens, the actuator providing a focusing stimulus to vary a focal length of the lens;
a rangefinder for estimating a range to an object; and
a controller in communication with the rangefinder and the actuator, the controller being configured to cause the actuator to generate the focusing stimulus on the basis of the range estimate.
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Abstract
A vision prosthesis includes an actuator in communication with an extra-ocular lens. The actuator providing a focusing stimulus to vary a focal length of the lens. A rangefinder estimates a range to an object and provides the range estimate to a controller. The controller causes the actuator to generate the focusing stimulus on the basis of the range estimate.
134 Citations
20 Claims
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1. A vision prosthesis comprising:
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an actuator in communication with an extra-ocular lens, the actuator providing a focusing stimulus to vary a focal length of the lens;
a rangefinder for estimating a range to an object; and
a controller in communication with the rangefinder and the actuator, the controller being configured to cause the actuator to generate the focusing stimulus on the basis of the range estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for assisting a patient in focusing on an object, the method comprising:
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providing a lens for the patient to look through, the lens having a variable focal length;
estimating a distance to an object within a field of view of the lens; and
causing the focal length to change in response to the estimate. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for correcting vision, the apparatus comprising:
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means for estimating a range to an object; and
means for varying a focal length of an extra-ocular lens on the basis of the range estimate. - View Dependent Claims (18, 19, 20)
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Specification