Micromotor actuated adjustable focus lens

Details Micromotor actuated adjustable focus lens Micromotor actuated adjustable focus lens

1991-03-14

1993-04-20

Shay, Randy C.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Eye prosthesis

Intraocular lens

A61F 216

Patent

active

052037886

ABSTRACT:
An adjustable focus lens apparatus includes a transparent lens body having a periphery, and a relatively rigid outer ring extending about the periphery of the lens body and a plurality of micromotor devices spaced equally about and coupled between the ring and the periphery. Each of the micromotor devices is responsive to an externally generated control signal for selectively changing the circumference and/or axial position of an associated portion of the periphery to adjust the lens for power and astigmatism correction. In several embodiments, the periphery includes an inner ring coupled to the outer ring by the micromotor devices. In another embodiment, the ring is formed of segments and the micromotor devices are included in overlapping portions of the segments.

REFERENCES:
patent: 4277852 (1981-07-01), Poler
patent: 4373218 (1983-02-01), Schachar
patent: 4444471 (1984-04-01), Ford, Jr. et al.
patent: 4512039 (1985-04-01), Lieberman
patent: 4514048 (1985-04-01), Rogers
patent: 4564267 (1986-01-01), Nishimoto
patent: 4575373 (1986-03-01), Johnson
patent: 4601545 (1986-07-01), Kern
patent: 4787903 (1988-11-01), Grendahl
patent: 4816031 (1989-03-01), Pfoff

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