103 results about "Color contact lens" patented technology

Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.

Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.

A colored contact lens comprising a clear pupil section and a colored, non-opaque iris section surrounding the pupil section. An intermittent pattern is deposited over the iris section using opaque elements which are indiscernible to the ordinary viewer and the inner border of the opaque section is uneven and non-circular. The elements of the pattern are of a shade which provides a contact lens capable of making subtle changes or enhancements to the color of the iris of a light-eyed person while imparting a very natural appearance.

A contact lens, comprising a preprint of a first shade and a main print of a second shade, wherein the preprint consisting of a first band of gradient dot matrix, wherein the main print consisting of a second band of evenly spaced circular voids, wherein the second band surrounds the starburst pattern, wherein the first band and the second band have a substantially identical outer diameter and the first band has a smaller inside diameter than the second band, wherein the first shade and the second shade are different, wherein the gradient dot matrix is characterized by dot coverage increases in a radial direction from the center too the peripheral edge or a position near the peripheral edge of the substantially-circular pattern.

A colored contact lens comprising a generally uncolored pupil region, a generally annular-shaped iris region and a multicolored pattern on the iris region. The multicolored pattern is sufficiently colored to change the apparent color of an iris of a person wearing the contact lens and comprises a plurality of color elements. The lens further comprises more than 1000 discrete generally uncolored regions defined by the color elements. At least 1000 of the discrete generally uncolored regions are sufficiently small such that an ordinary viewer viewing the contact lens from a distance of sixteen inches cannot detect the presence of any of the at least 1000 generally uncolored regions when the wearer is wearing the contact lens.

The invention discloses a brightly colorful contact lens which is characterized by being prepared by using a method comprising the following steps of: (1) preparing structural color hydrogel with an inverse opal photon crystal structure by using a sequenced colloid nano particle photon crystal structure as a template through a colloid crystal template method; (2) paving the structural color hydrogel with the inverse opal photon crystal structure in a PV (polyvinyl) mould of the contact lens; adding the contact lens standard hot-solid liquid to completely permeate into the network structure ofthe hydrogel; processing the thermal solidification sequence to form the initial film of the contact lens; immersing the initial film of the contact lens in a standard saline water solution to process hydration treatment until swelling is in equilibrium. Compared with other colored contact lenses, the brightly colorful contact lens is beautiful in appearance, good in biological compatibility and good in practicability.

A method of manufacturing a colored contact lens including the steps of providing a transparent contact lens having a pupil section and an iris section, the iris section surrounding the pupil section and applying a colorant to the surface of the contact lens. The colorant is applied to the contact lens as an amorphous pattern and covers an effective amount of the iris section of the same. The amorphous pattern provides a lens capable of changing the apparent color of the iris of a person wearing the lens while imparting a very natural appearance.

The invention provides a method for producing colored contact lenses with relatively high quality color images. The method of the invention comprises the steps of: (a) obtaining a water based ink having a viscosity of greater than about 100 centipoise (cps) and comprising at least one colorant, a water-soluble binder polymer having ethylenically unsaturated groups, an initiator, and a surfactant, wherein the surfactant is present in an amount sufficient to provide the ink a dynamic surface tension of less than about 40 dyne/cm at surface age of about 1 second, and wherein the initiator is present in an amount sufficient to allow the ink to be cured with an energy exposure which is comparable with an energy exposure required for curing the lens-forming material; (b) applying the ink, by using pad transfer printing technique, to at least a portion of at least one of molding surfaces of a lens mold to form a colored coat; (c) actinically curing the ink printed on the mold to form a colored film, wherein the printed ink is cured to an extent so that no noticeable color smearing is observed by examination with naked eyes; (d) dispensing a lens-forming material into the lens-forming cavity of the mold; and (e) actinically or thermally curing the lens-forming material within the lens-forming cavity to form the contact lens, whereby the colored film detaches from the molding surface and becomes integral with the body of the contact lens, wherein the colored film becomes part of one of the anterior and posterior surface of the colored contact lens and has a good adhesion to the lens.

A colored contact lens having a non-opaque pupil section, an iris section surrounding said pupil section, and a colored, opaque, intermittent pattern over the iris section which is indiscernible to the ordinary viewer. The pattern is made up of a first portion having a first shade, a second portion having a second shade different from the first shade, and a third portion having a shade different from the second portion and either the same or different from the first portion. A first uneven border differentiates the first and second portions, and a second uneven border differentiates the second and third portions, however, said portions may overlap. The lens is capable of changing appearance of the iris of the person wearing the lens.

A colored contact lens provided with blue light filtering and anti-UV functions of the present invention is a coated contact lens formed from three layers, in which a coloring agent of a middle layer is cured onto a lower layer lens, and the upper layer lens contains an UV (ultraviolet)-light absorber and a blue light filming agent. Accordingly, apart from providing a colored contact lens, the contact lens further achieves the multiple effectiveness of anti-UV and blue light filtering.

The present invention relates to a method for the manufacture of a contact lens with a printed image thereon, in particular a silicone hydrogel contact lens with a printed image thereon, comprising applying one or more ink drops to at least a portion of at least one molding surface of a lens mold, wherein each ink drop is sufficiently flat, that the forces exerted by the mold surface to the ink drop surface in the area where they make contact, are higher than the forces exerted by the flowing lens forming material to the facing surface of the ink drop, and wherein the ink material and the lens forming material are sufficiently immiscible or not miscible at all.

The invention discloses a composite structured colored contact lens which comprises a contact lens body (1); and the composite structured colored contact lens is characterized in that a uniform single-colored or mixed-colored structural colour colloidal crystal solution polymer serving as a structural colour area is cured at the outside of the contact lens body (1). Compared with other contact lenses, the composite structured colored contact lens disclosed by the invention is more beautiful, good in biocompatibility and good in practicability.

The present invention provides a method for making colored contact lenses and an apparatus for implementing the method of the invention. The apparatus of the invention comprises a securing means for holding a contact lens or a portion of a mold for making the contact lens, a printer head, wherein the printer head comprises one or more nozzles each of which is capable of jetting droplets of color liquid independent of each other under control of a computer system; a positioning means for precisely positioning the printer head at each of a plurality of predetermined positions, one at a time, on a surface of the contact lens or the mold portion under control of the computer system. The method and apparatus of the invention are useful for producing colored contact lenses having high quality color images thereon.