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US 8,409,278 B2Granted
External lens with flexible membranes for automatic correction of the refractive errors of a person
OwnerGholam A. Peyman, Nasser N. Peyghambariam +1inventors
InventorsGholam A. Peyman, Nasser N. Peyghambariam, Randall L. Marks
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Abstract
The system is able to correct the spherical and cylindrical power as well as other aberrations of the optical pathway of both eyes of a person eliminating the need for multiple heavy glass lenses and mirrors. For correcting the refractive errors, the above described system is equipped with a diachroic mirror interposed in front of the system, to divert part of the light reflecting from the pupil to a Shack-Hartman wave front sensor.
Claims5
An automated system for correcting low order and high order aberrations of refractive errors, said system comprising:
- a chamber having a fluid therein and an opening;
- a flexible membrane attached to said chamber and covering said opening;
- and
- a sensor configured to automatically control the fluid pressure inside said chamber to thereby alter the curvature of said membrane, such that when the curvature of said membrane is changed so as to have a positive surface, due to an increase in fluid pressure inside said chamber, a combination of said membrane and said fluid acts as a positive lens, and when the curvature of said membrane is changed so as to have a negative surface, due to a decrease in fluid pressure inside said chamber, a combination of said membrane and said fluid acts as a negative lens,
- wherein said membrane is a transparent elastomeric material, and
- wherein said system is sized and configured to be positioned externally of the eye.
3 more elements
Dependencies are inferred from the claim text.