Intraocular lens
AssigneeDongguan Aier Opthalmology Hospital Co., Ltd.
InventorFei LIU
Life of this patent
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Abstract
Disclosed is an intraocular lens, including an optical portion. A first surface of the optical portion includes a first central area and a first annular area, which have different focal powers; a second surface of the optical portion includes a second central area and a second annular area, which have different focal powers, and the first central area and the second central area are not completely projected onto each other. Based on the ability of the areas on the first surface and the areas on the second surface of the optical portion to refract the light, the light enters into the optical portion from the first surface, and is refracted from the second surface of the optical portion, and converged to at least three different positions on the optical axis of the optical portion.
Claims20
An intraocular lens, comprising an optical portion, wherein a first surface of the optical portion comprises a first central area and at least one first annular area, and the first central area and the at least one first annular area have different focal powers;
- a second surface of the optical portion comprises a second central area and at least one second annular area, the second central area and the at least one second annular area have different focal powers, and the first central area and the second central area are not completely projected onto each other, so that light enters into the optical portion from the first surface, and is refracted from the second surface, and converged to at least three different positions on an optical axis of the optical portion.
Dependencies are inferred from the claim text.