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| Number | Title | Issue Date |
| 5083859 | Aspheric lenses Ophthalmic spectacle lenses with spherical powers between -0.25 and -12.00 diopters and cylindrical powers between -0.25 diopters and -4.00 diopters are disclosed. The lenses are provided with a convex spherical anterior surface and a concave aspherical p... | 01/28/1992 |
| 5076684 | Multi-focal diffractive ophthalmic lenses A multifocal ophthalmic lens has diffractive power produced by a plurality of concentric zones. The zones have radii that meet the condition R02 | 12/31/1991 |
| 5073021 | Bifocal ophthalmic lens constructed from birefringent material A dual focal length ophthalmic lens is formed from a birefringent material with its fast and slow axes perpendicular to the user's visual axis. The dual focal property arises due to the differing indices of refraction of the birefringent material for ligh... | 12/17/1991 |
| 5044743 | Corrective lens system A corrective lens system with selectable optical characteristics includes a lens element for placement in the optical path of a human eye ahead of the retina of the eye and a polarizer element for placement in the optical path of the human eye ahead of th... | 09/03/1991 |
| 5017000 | Multifocals using phase shifting This invention relates to a multifocal optical lens configuration that relies on the phenomenon of simultaneous vision whereby the eye is presented with two clear images at once. In particular this invention allows a lens to be made with arbitrary relativ... | 05/21/1991 |
| 5002383 | Polyprismatic lens for enhancing human ocular motility A device for enhancing the range of vision of a person with low eye motility which includes a plurality of parallel or concentric prisms with bases disposed paracentrically on a transparent medium. The prisms cooperate to enhance the angle of vision of th... | 03/26/1991 |
| 4995714 | Multifocal optical device with novel phase zone plate and method for making A diffractive multifocal optical element comprising a phase zone plate of a Cohen lens design containing rotationally symmetrical, curved repetitive patterns designed to operate at a specific wavelength and which are also curved in r2 space.... | 02/26/1991 |
| 4995715 | Diffractive multifocal optical device A diffractive multifocal optical element comprising a phase zone plate containing annular concentric zones in which the zones are spaced substantially proportional to Ýa;n, the zones possess stepped facets that introduce a discontinuity in optical pat... | 02/26/1991 |
| 4988185 | High add bifocal spectacles and methods of prescribing A method for prescribing bifocal spectacles for a person having reduced visual acuity includes placing a trial frame on the face of said person in front of his eyes and measuring a far interpupillary distance when said person is viewing a distant object, ... | 01/29/1991 |
| 4981342 | Multifocal birefringent lens system A multifocal birefringent lens system is described together with applications of the lens system such as ophthalmic lenses (including those of the intraocular, contact and spectacle type) and optical instruments and devices including photographic cameras,... | 01/01/1991 |
| 4969729 | Composite plastic lens having a positioned optical axis and method of making the same The composite plastic lens includes an anterior plastic lens having a first corrective feature and a posterior plastic lens having a second corrective feature. One of the lenses, preferably the anterior lens, may have an optical center axis that is decent... | 11/13/1990 |
| 4952048 | Method of designing a non-progressive multifocal ophthalmic lens The present invention relates to a multifocal ophthalmic lens which comprises a first substantially spherical area for distance viewing, a second substantially spherical area for near viewing having a desired width and height and being surrounded on a plu... | 08/28/1990 |
| 4938583 | Contact lens and method of making same A bifocal contact lens is made by cutting a first convex surface on the anterior surface of the lens, the first convex surface being a near distance corrective surface and the posterior surface being shaped to the eye, so that substantially the entirety o... | 07/03/1990 |
| 4892403 | Composite plastic lens and method of making the same The composite plastic lens includes an anterior plastic lens having a first corrective feature and a posterior plastic lens having a second corrective feature. The anterior and posterior lenses are joined together by an adhesive that bonds opposing, etche... | 01/09/1990 |
| 4869588 | Non-progressive multifocal ophthamic lenses The present invention relates to a multifocal ophtalmic lens which comprises a first substantially spherical area for distance viewing, a second substantially spherical area for near viewing having a desired width and height and being surrounded on a plur... | 09/26/1989 |
| 4854689 | Progressive ophthalmic lens A progressive ophthalmic lens with a continuous progressive surface comprises a substantially constant power first area matched to far vision. It also has a substantially constant power second area matched to near vision. Between the first and second area... | 08/08/1989 |
| 4846913 | Method for making bifocal lens Apparatus and a method of making an eyeglass lens module in which two lens components are disclosed. The first component is a conventional single vision stock lens having conventional corrections in the negative or positive diopter range. The second lens ... | 07/11/1989 |
| 4838675 | Method for improving progressive lens designs and resulting article A method for optimizing the performance of an ophthalmic progressive lens having a distance viewing zone, a near viewing zone, and an intermediate zone, and the resulting optimized lens are provided. The surface of the lens to be optimized, which has at l... | 06/13/1989 |
| 4830482 | True-focus bifocal eyeglasses An optical device for focusing images on the retinas of the left and right eyes of a human user, containing left and right corrective lenses each having a light receiving surface and first and second lens segments of different focal lengths for focusing n... | 05/16/1989 |
| 4798609 | Radially segmented zone of focus artificial lens An implantable or contact lens for replacement of a defective natural lens in an eye in which various portions of the lens have different powers and focal lenghts to produce in-focus images on different portions of the retina of objects which are located ... | 01/17/1989 |
| 4798608 | Laminated zone of focus artificial lens An implantable or contact lens for replacement of a defective natural lens in an eye in which various portions of the lens are laminated horizontally to have different powers to produce in-focus images on different portions of the retina of objects which ... | 01/17/1989 |
| 4795462 | Cylindrically segmented zone of focus artificial lens An implantable or contact lens for replacement of a defective natural lens in an eye in which various annular portions of the lens have different powers and focal lengths to produce in-focus images, on different portions of the retina, of objects which ar... | 01/03/1989 |
| 4778266 | Progressive multifocal ophthalmic lens A progressive multifocal ophthalmic lens has a main meridian along at least part of which the curvature of the lens varies continuously. On each side of the main meridian the areas of aberration are symmetrical to each other. The main meridian intersects ... | 10/18/1988 |
| 4778462 | Multiple element zone of focus artificial lens An implantable or contact lens for replacement of a defective natural lens in an eye in which various portions of the lens have different powers and focal lengths to produce in-focus images on different portions of the retina, of objects which are located... | 10/18/1988 |
| 4762408 | Progressive multifocal lens and spectacles using same Progressive multifocal ophthalmic lenses are provided having a far vision viewing zone, a near vision viewing zone and an intermediate vision viewing zone therebetween. A central basic curve extends essentially vertically through the far, intermediate and... | 08/09/1988 |
| 4758448 | Coated ophthalmic lenses and method for coating the same An ophthalmic lens and a method for providing a thin coating thereon is disclosed. The coatings render the surfaces of the devices resistant to abrasion and have an SEB abrasion resistance to at least 20 psi. They are optically clear, aberration-free, and... | 07/19/1988 |
| 4690524 | Multifocal spectacle lens having a large near-vision part The invention is directed to a multifocal spectacle lens having an especially large near-vision part. A supplementary component is fused into a base dimensioned for the near-vision range. The supplementary part is for at least one distance-vision range. I... | 09/01/1987 |
| 4645317 | Eyeglass lens modules and method An eyeglass lens module in which two lens components are formed. The first component is the conventional single vision stock lens having conventional corrections in the negative or positive diopter range and, indeed, for the patient requiring only bifocal... | 02/24/1987 |
| 4640587 | Method for manufacturing a spectacle lens for myopes There is described a method for manufacturing a spectacle lens for myopes the edge thickness of which may be considered as substantial, which comprises starting with a semi-machined product with a concave hollowing which extends to the edge or substantial... | 02/03/1987 |
| 4636211 | Bifocal intra-ocular lens An intra-ocular lens consisting of a transparent body has concentrically oriented near vision and far vision, optically powered portions with the near vision portion being centrally positioned relative to the body and the far vision portion being coaxial ... | 01/13/1987 |
| 4576623 | Method for making multifocal ophthalmic lens A laminated multifocal prescription ophthalmic lens is provided comprising a plano (zero power) cap element incorporating a convergent near-vision multifocal segment, the cap being cemented to a prescription-ground single vision base element. The back sur... | 03/18/1986 |
| 4573777 | Aspheric spectacle lens blank The present invention provides a spectacle lens blank for an aphakic eye and which is adapted to be worn in front of the eye by patients following extra capsular surgery. The lens blank includes a lens body having a posterior surface and an aspherical ant... | 03/04/1986 |
| 4547049 | Composite ophthalmic lens system A method and apparatus for a multi-element lens system which combines pre-selected radial differences of separate ophthalmic lenses with non-mating curvatures into a single, flexibly conforming laminated unit. The system comprises a primary lens element o... | 10/15/1985 |
| 4528351 | Plastic lens A plastic lens of a stepped segment having an excellent surface hardness can be obtained at high molding efficiency from cast polymerization of a diethylene glycol bisallyl carbonate and specified acrylate(s) system further added with a specified diacryla... | 07/09/1985 |
| 4522993 | Resin for high-refractivity lenses and lenses made of same resin Disclosed herein are a resin for high-refractivity lenses, formed by copolymerizing at least one nucleus-halogenated benzene dicarboxylate represented by the following general formula (I): ##STR1## wherein X means a chlorine or bromine atom, n is 2 o... | 06/11/1985 |
| 4514048 | Variable focus elastomeric lens system A variable focus lens system comprising an elastomeric lens structured to undergo shape changes and corresponding focal length changes in a continuous manner over a predetermined range in response to variations in a tensile stress uniformly distributed ar... | 04/30/1985 |
| 4512040 | Bifocal intraocular lens A bifocal intraocular lens consisting of an inner and outer transparent wall defining a centrally located refractive chamber, in the line of sight, and in fluid communication with a vertically positioned reservoir chamber, out of the line of sight, wherei... | 04/23/1985 |
| 4507452 | Silicone hydride contact lens and polymer Optical contact lenses and silicone hydride polymers therefor are disclosed.... | 03/26/1985 |
| 4484804 | Multifocal ophthalmic lenses Multifocal ophthalmic lenses are disclosed such as a bifocal lens in which the convex front surface includes an upper part for distant vision having a first spherical surface and a lower part for reading having a second spherical surface, the radius of th... | 11/27/1984 |
| 4444893 | Highly refractive, low dispersion, low density optical glass suitable for corrective lenses An optical quality glass suitable for use in ophthalmic lenses having a refractive index of at least 1.59, an Abbe number of at least 40.5, a density of no greater than 2.67 g/cm-3, and a coefficient of thermal expansion of less than 90... | 04/24/1984 |
