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| Number | Title | Issue Date |
| 6149271 | Progressive addition lenses The invention provides progressive addition lenses in which lens unwanted astigmatism is reduced and channel width through the intermediate and near vision zones is increased as compared to conventional progressive addition lenses. This result is achieved... | 11/21/2000 |
| 6000798 | Ophthalmic optic devices A novel ophthalmic lens is provided. The lens includes an astigmatism subtracting surface that removes unwanted astigmatism caused by other elements of the lens.... | 12/14/1999 |
| 5914174 | Lens or semi-finished blank comprising photochromic resin compositions A resin is provided comprising a mixture of at least two polymerizable components, at least one photochromic additive, at least one additive and at least one polymerization initiator. The mixture of at least two polymerizable components is preferably sele... | 06/22/1999 |
| 5907386 | Method of manufacturing a progressive optic A progressive optic has an optical preform wherein the radius of curvature of the surface is altered by forming discrete spherical portions across the surface. A thin intermediate layer, having a different refractive index from the optical preform, is the... | 05/25/1999 |
| 5872613 | Method of manufacturing contact lenses A method for providing a contact lens for a patient. According to this method, an optical preform is selected, and a resting position of the optical preform on the patient's eye is determined. An optical feature is also located on a patient's eye. Then, a... | 02/16/1999 |
| 5861934 | Refractive index gradient lens An optical product such as an optical lens, or semi-finished lens blank is provided comprising a composite of at least three different and separately applied layers, each layer having a different refractive index which allow for a progressive multifocal l... | 01/19/1999 |
| 5859685 | Achromatic ophthalmic lenses A compound ophthalmic lens having improved chromatic aberration is provided which includes a polymerized resin superstrate lens formed on a substrate lens. The chromatic dispersion characteristics of the resin, as well as its refractive index, are matched... | 01/12/1999 |
| 5851585 | Impregnation of plastic substrates with photochromic additives The present invention relates to new methods of impregnating plastic substrates with photochromic additives. By impregnating the plastic substrate in multiple impregnation steps under varying conditions, the concentration profile of two or more photochrom... | 12/22/1998 |
| 5847803 | Optic incorporating a power gradient A progressive optic has an optical preform wherein the radius of curvature of the surface is altered by forming discrete spherical portions across the surface. A thin intermediate layer, having a different refractive index from the optical preform, is the... | 12/08/1998 |
| 5805266 | Method of machining contact lenses A method for providing a contact lens for a patient. According to this method, an optical preform is selected, and a resting position of the optical preform on the patient's eye is determined. An optical feature is also located on a patient's eye. Then, a... | 09/08/1998 |
| 5793465 | Toric surfacecasting An optical preform has a predetermined spherical curve on a concave surface of the optical preform, a predetermined spherical curve on a convex surface of the optical preform and a near add power. A thin resin is applied to the concave surface of the opti... | 08/11/1998 |
| 5789015 | Impregnation of plastic substrates with photochromic additives The present invention relates to new methods of impregnating plastic substrates with photochromic additives. By impregnating the plastic substrate in multiple impregnation steps under varying conditions, the concentration profile of two or more photochrom... | 08/04/1998 |
| 5702819 | Composite lenses A method for making improved optical quality lenses is described which includes arranging a mold having a molding surface, a curable optical quality resin composition, and a plastic lens preform of optical quality material such that the resin composition ... | 12/30/1997 |
| 5598234 | Method of manufacturing toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses A method for making a finished aspheric single vision, spherical or aspheric bifocal, multifocal or progressive addition contact lens includes the step of fitting a patient requiring a near correction with a single vision spherical or aspheric contact len... | 01/28/1997 |
| 5531940 | Method for manufacturing photochromic lenses Methods for making optical quality plastics lenses with photochromic additives are described. According to a first embodiment of the invention, a casting resin is containing photochromic additives is arranged between a mold and a lens preform and then cur... | 07/02/1996 |
| 5528321 | Method of manufacturing contact lenses A method for providing a contact lens for a patient. According to this method, an optical preform is selected, and a resting position of the optical preform on the patient's eye is determined. An optical feature is also located on a patient's eye. Then, a... | 06/18/1996 |
| 5517259 | Method of manufacturing toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses Methods for providing a contact lens are described. According to a first embodiment, a patient is fitted with an optical preform and the position on the surface of the optical preform corresponding to the center location of the patients's pupil is identif... | 05/14/1996 |
| 5512371 | Composite lenses A method for making improved optical quality lenses is described. The method includes arranging a mold having a molding surface, a curable optical quality resin composition, and a plastic lens preform of optical quality material such that the resin compos... | 04/30/1996 |
| 5480600 | Method for manufacturing thin progressive addition lenses A method is provided for casting a progressive addition lens from: a mold incorporating a spherical portion and an add zone; a preformed lens having a convex curvature correlated with the concave curvature of the mold; and a polymerizable resin. The metho... | 01/02/1996 |
| 5470892 | Polymerizable resin for forming clear, hard plastics A photopolymerizable resin is formed from between about 50% to 90% by weight of a polymerizable base component, between about 1% and 20% by weight of a cross-linker, between about 0.5% and 6% by weight of a photoinitiator, and between about 0.5% and 20% b... | 11/28/1995 |
| 5406341 | Toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses and method of manufacturing A method for making a finished aspheric single vision, spherical or aspheric bifocal, multifocal or progressive addition contact lens includes the step of fitting a patient requiring a near correction with a single vision spherical or aspheric contact len... | 04/11/1995 |
| 5178800 | Method for forming plastic optical quality spectacle lenses A fast, relatively inexpensive method and simple is disclosed for producing a finished plastic multifocal or progressive lens from a preformed lens which has a predetermined lens correction (i.e., curvature or prescription) at its optical center. The disc... | 01/12/1993 |
