Variable focus lens
First Claim
1. A passive stable variable focus intraocular lens apparatus, for implantation into an eye, comprising:
- a transparent, generally circular envelope;
a transparent gel having a relatively high resistance to flow encased in said envelope; and
a plurality of light refracting particles suspended in a predetermined orientation in said gel, said particles being responsive to an external force for changing to a new orientation of said particles with respect to said envelope for selectively adjusting characteristics of said lens apparatus including the characteristics of power and astigmatism correction, whereby upon removal of the external force, said particles remain in said new orientation within said gel.
0 Assignments
0 Petitions
Accused Products
Abstract
A variable focus lens apparatus includes a transparent, generally circular envelope, a transparent gel having a relatively high resistance to flow encased in the envelope, and a plurality of light refractive particles suspended in a predetermined orientation in the gel. When an external force field is applied to the lens apparatus, the selectively focusable particles are responsive for changing to a new orientation with respect to said envelope for selectively adjusting characteristics of the lens apparatus including at least one of the characteristics of power and astigmatism correction, whereby upon removal of the external force, the particles remain in the new orientation within the gel. A control system for controlling at least one of the strength and duration of the force field applied to the particles is connected to coils and a power supply for generating the force field.
-
Citations
20 Claims
-
1. A passive stable variable focus intraocular lens apparatus, for implantation into an eye, comprising:
-
a transparent, generally circular envelope; a transparent gel having a relatively high resistance to flow encased in said envelope; and a plurality of light refracting particles suspended in a predetermined orientation in said gel, said particles being responsive to an external force for changing to a new orientation of said particles with respect to said envelope for selectively adjusting characteristics of said lens apparatus including the characteristics of power and astigmatism correction, whereby upon removal of the external force, said particles remain in said new orientation within said gel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A passive stable variable focus lens apparatus comprising:
-
a transparent, generally circular envelope; a transparent gel having a relatively high resistance to flow encased in said envelope; a plurality of light refractive particles suspended in a predetermined orientation in said gel; and means for generating an electromagnetic field, said particles being responsive to an external force applied by the electromagnetic field for changing to a new orientation of said particles with respect to said envelope for selectively adjusting characteristics of said lens apparatus including the characteristics of power and astigmatism correction, whereby upon removal of the external force, said particles remain in said new orientation within said gel. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A passive stable variable focus lens apparatus comprising:
-
a transparent, generally circular envelope; a transparent gel having a relatively high resistance to flow encased in said envelope; a plurality of light refractive particles suspended in a predetermined orientation in said gel; means for generating a force field; and a control system for controlling at least one of the strength and duration of the force field applied to said particles connected to said means for generating a force field, said particles being responsive to an external force applied by the force field for changing to a new orientation of said particles with respect to said envelope for selectively adjusting characteristics of said lens apparatus including at least one of the characteristics of power and astigmatism correction, whereby upon removal of the external force, said particles remain in said new orientation within said gel. - View Dependent Claims (19, 20)
-
Specification