Holographic ophthalmic lens
OwnerXiaoxiao Zhanginventor
Life of this patent
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Abstract
The invention provides a method for producing a corrective optical lens. The method has the steps of introducing a polymerizable optical material in a mold for an ophthalmic lens, or a holographic recording medium; and exposing the polymerizable material in the mold or the recording medium to electromagnetic waves, wherein the electromagnetic waves form a pattern of interference fringes while polymerizing the polymerizable material or while exposing the recording medium, thereby the pattern is recorded in the lens to form a volume grating structure, thereby forming a volume holographic element, wherein the pattern diffracts light entering said front curve to correct the ametropic conditions when placed on, in or in front of an eye.
Claims24
A method for producing an optical lens for correcting ametropic conditions, said lens having a front curve and a base curve, which method comprises the steps of:
- a) introducing a polymerizable optical material in a mold for an optical lens;
- and
- b) exposing said polymerizable material in said mold to electromagnetic waves, wherein said electromagnetic waves form a pattern of interference fringes while polymerizing said polymerizable material, thereby said pattern is recorded in said lens to form a volume grating structure, thereby forming a volume holographic element,
- wherein said pattern diffracts light entering said front curve to correct said ametropic conditions when placed on, in or in front of an eye.
A flexible method for producing a optical lens having a corrective power, comprising the steps of:
- a) introducing a polymerizable optical material in a mold for an optical lens;
- and
- b) exposing said polymerizable material in said mold to a pattern of electromagnetic waves, said electromagnetic waves polymerizing said optical material and said pattern imparting a volume grating structure in said ophthalmic lens as it is being polymerized, thereby forming a volume holographic element,
- wherein said volume grating structure is adapted to provide said corrective power of said optical lens when said optical lens is placed on, in or in front of a mammalian eye.
A method for producing an ophthalmic lens for correcting ametropic conditions, said lens having a front curve and a base curve, which method comprises the steps of:
- a) exposing a holographic recording medium to electromagnetic waves, wherein said electromagnetic waves form a pattern of interference fringes of a volume grating structure and said pattern is designed to diffract light entering said front curve to at least partially correct said ametropic conditions,
- b) developing the exposed holographic recording medium, and
- c) encapsulating the developed recording medium in a biocompatible optical material, thereby forming said optical lens.
A method for producing a lens for correcting ametropic conditions of an eye, said lens having a front curve and a base curve, which method comprises the steps of:
- a) introducing a polymerizable optical material in a mold for an optical lens;
- and
- b) exposing said polymerizable material in said mold to electromagnetic waves, wherein said electromagnetic waves form a pattern of interference fringes while polymerizing said polymerizable material, thereby a volume grating structure is formed in said lens,
- wherein said pattern modifies light entering said lens to correct said ametropic conditions.
Dependencies are inferred from the claim text.