Matches 501 - 550 out of 894 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >
Match Document Document Title
5351100 Glass multifocal ophthalmic lens with polarizing element and method of making  
The present invention includes a glass multifocal light polarizing ophthalmic lens having a glass multifocal lens portion with a multifocal element fused to a convex outer surface of the multifocal...
5349394 Rigid gas permeable lenses  
A method of fitting rigid gas permeable contact lenses comprising the steps of: providing a set of lenses of differing BCOR values, but the same optical corrective power; fitting a patient...
5343260 Composite ophthalmic lenses and their manufacture  
This invention is directed to the fabrication of composite lenses consisting of a transparent thermoset polymer exhibiting an index of refraction of at least 1.58 and a thin glass element of...
5327180 Polarized lens and method of making same  
A lens and a pair of glasses incorporating the lens wherein each lens has first and second lens elements, preferably formed of mineral glass, with a bigradient coating deposited on the inner...
5323192 Method and packaging system for facilitating fabrication of laminated lenses  
Fabrication of an eyeglass lens to meet a specific ophthalmic prescription is simplified by arranging back lens wafers of different sphere powers and cylinder corrections in order of the through...
5311356 Apparatus for simulating effects of optical lenses and methods for production and use  
Apparatuses, and methods for their production and use, with which the visual effects of optical lenses can be accurately and credibly simulated. The invention permits the simulation of the visual...
5296881 Method and contact lenses for treating presbyopia  
A method of correcting or alleviating presbyopia in humans comprising (a) fitting a first contact lens to a first eye, and (b) fitting a second contact lens to the other eye. Each of the lenses has...
5293186 Contact lens  
To improve its gas-permeability, a contact lens, which may be of any normal material, even a gas-impermeable material such as polymethylmethacrylate, is microperforated with 66000 holes distributed...
5272495 Progressive multifocal ophthalmic lens  
The lens has an aspherical surface having a zone for far vision, a zone for near vision, and between these two zones, a zone for intermediate vision, with a meridian curve along which the curvature...
5246634 Process for producing intraocular lens  
A process of producing a one-piece intraocular lens in which the lens includes an optical portion and at least one support portion produced integrally with each other, the process including the...
5235441 Holographic lenses  
A method of constructing holographic lenses for correction of a person's deficiencies comprises splitting a filtered laser beam onto an object under consideration and thence to a photographic film,...
5235359 Progressive opthalmic lenses and method of facilitating their manufacture  
The front surface, for example, of a progressive ophthalmic lens has a central area whose curvature varies progressively over at least part of at least one meridian and constitutes its optically...
5235357 Spectacle lenses having an inside-out conicoidal front surface and method for forming same  
Plus and minus power ophthalmic spectacle lenses for the correction of distance vision incorporating a convex aspherical front surface are provided. The front surface of the invention is described...
5217491 Composite intraocular lens  
A one-piece bicomposite intraocular lens having a soft foldable central optic portion and a hard, stiff haptic portion made from two dissimilar polymeric materials wherein the soft polymeric...
5218386 Eyeglasses with spectral color shift  
The present invention is directed towards a method and apparatus for permitting human perception of more of the spectrophotometric values which define the color of an observed object. A first...
5216455 Lens location block  
A bi-focal or multi-focal lens element or blank of synthetic plastics material is supported by a lens location block releasably molded on to the front face of the lens element or blank, the...
5214453 Progressive eccentricity multifocal contact lens and manufacturing process thereof  
A multifocal contact lens, having progressive eccentricity in an area coaxial relative to the optical center, is obtained through the lens outer surface turning on a lathe, in the optical area...
5191365 Corneal contact lens and method for treating myopia  
A corneal contact lens for use in treating myopia by controlled corneal molding. The lens includes a central zone having a central zone radius of curvature and a tear zone. The tear zone is located...
5191366 Aspherical lens, method of producing the lens and apparatus for producing the lens  
The present invention relates to an aspherical lens as a refracting and correcting means for an eye, such as an intraocular lens and a contact lens, a method of producing the lens, and an apparatus...
5189448 Unit for searching for a lost contact lens  
To let one confirm the location of a contact lens which has been lost when one has intended to apply it to or remove it from the eyeball, a polarizing filter is used. The surface or side surface of...
5187505 Laminated lens wafers  
A series of back wafers for a laminated ophthalmic lens, wherein successive members of the series have a diopter difference in their concave curvature which is sufficiently small to enable a member...
5172143 Artificial optical lens and method of manufacturing it  
The manufacture of an artificial optical lens having any given power profile starts from an artificial optical lens having a different power profile. A physical-chemical treatment method modifies...
5170192 Oxygen permeable bifocal contact lenses and their manufacture  
An oxygen permeable bifocal contact lens with a Dk of at least 10×10 -11 in which a distance vision portion having a refractive index of not more than 1.49 is formed as a preform in which there...
RE34132 Progressive power ophthalmic lens  
An improved ophthalmic lens for presbyopia is disclosed in which the refractive power is progressively changed to provide a natural visual target arrangement. In the opthalmic ophthalmic lens,...
5166710 Contact lens and process for the manufacture thereof  
A contact lens that consists of gas-permeable, especially oxygen-permeable, lens material and has a supporting edge which rests on the sclera and is covered at least partially by both eyelids and...
5159360 Contact lens with pre-determined useful life  
The present invention contact lens is a soft, disposable lens which, under eye wearer conditions, changes one or more characteristics essential for comfortable use, at a predetermined time to...
5153778 Powerless field-corrective lens  
A optical lens is disclosed which is capable of correcting for imaging system characteristics such as field curvature and spherical aberration. The corrective lens comprises a single optic device...
5149181 Lens wafer, laminate lens and method of fabrication thereof  
Lens wafers which are bonded together with adhesive to form a laminate lens for use in eyeglasses or for other purposes enables immediate visual detection of the installation of an unlaminated lens...
5139325 Wide depth of focus power add to intraocular and contact lenses  
A lens and method of fabrication thereof for improving reading vision while maintaining normal vision wherein the diopter power of the lens varies inversely with the radius of the lens.
5139857 Composite article composed of rigid components with different coefficients of thermal expansion  
There are disclosed a method of bonding components having substantially different coefficients of thermal expansion, and composite articles thus produced. The components are bonded with the cured...
5137344 Semi-finished lens  
A semi-finished lens of plastic material which will be ground on the basis of a spectacles prescription to be completed as a myopia correcting single-focus lens is molded such that the convex...
5129719 Production method for making heterogeneous or asymmetrical eyeglasses or frames  
This invention relates to a manufacturing method for production of visibly heterogeneous or asymmetrical sunglasses, eyeglasses or frames. The production method mass produces a product comprising a...
5120120 Multifocal optical device with spurious order suppression and method for manufacture of same  
A multifocal optical device is provided for focusing light traveling parallel to an optical axis of the device. The multifocal optical device comprises a multifocal phase zone plate including at...
5116112 Colored lens and method of manufacture  
A process for the manufacture of a molded contact lens containing a transparent central visual region circumscribed by a colored iris portion which comprises a. coating a colored liquid which is...
5106182 Laminated cosmetic contact lens and method of making same  
The invention is a method of printing a replica of the natural iris on a contact lens. The printing is done using a rubber printing member having up raised rubber radial segments having a radius of...
5104213 Polymer buttons having holes therein and contact lenses manufactured therefrom and method of manufacture  
An apertured polymer button in which that portion of the button which is machined and polished to produce a contact lens contains holes having a diameter of 40 to 60 microns and allow the passage...
5104212 Diffractive contact lens in relief  
A diffractive contact lens in relief includes a smoothing layer (50) of optically transparent material having a smooth outside surface (51) and placed over the optical surface (16) in relief so as...
5069542 Contact lens  
A contact lens has an elliptical inside surface with a numerical eccentricity of 0.2 to 0.5 and a zenith radius of curvature of 8.0 to 8.4 mm. The inside surface preferably has a peripheral,...
5064712 Laminated lens structure  
There is disclosed an improvement of the three layer laminated lens structure of U.S. Pat. No. 4,793,703 whereby the adhesive inerlayer is more tightly bonded to the outer plastic and glass layers...
5062701 Asymmetric contact lens  
A contact lens comprising a corneal section, a vertical axis, and a shape adapted to maintain the lens at an intended orientation. The lens has either a visible horizontal line segment located in...
5061057 Porous contact lens and method for making it  
In order to make hard and soft contact lenses having a pore diameter and a pore density optimum for use as oxygen permeable contact lenses, the contact lens after molding is subjected to...
5056909 Contact lens for compensating eye dominance crossover  
A contact lens has a central circular region treated to make it translucent. The diameter of the translucent region is at least great enough to cover the pupil of the eye. Light passes through the...
5050981 Lens design method and resulting aspheric lens  
An aspheric lens for providing improved vision and a method for generating such a lens is described. The lens provides a sharp image focus while minimizing image aberrations. The method utilizes...
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...
5033839 Method of minimizing the maximum thickness of a unifocal ophthalmic lens and gradient index unifocal ophthalmic lens obtained by application of this method  
A unifocal ophthalmic lens has part-spherical concave and convex surfaces. Its refractive index varies radially from its optical axis to its periphery. The variation of the refractive index is...
5018849 Colored contact lens and methods of making the same  
A contact lens capable of causing significant changes in the color of the iris of the eye of a wearer has a first portion contacting the eye, a second portion attached to the first portion and...
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...
4976533 Method for measuring the rotation of an assymetric contact lens and lenses for practicing the method  
A contact lens comprising a corneal section, a vertical axis, and a shape adapted to maintain the lens at an intended orientation. The improvement comprises either a visible horizontal line segment...
4971432 Bifocal contact lens  
A bifocal contact lens includes a near vision portion having a first radius curvature and a far vision portion concentric with the near vision portion and having a second radius of curvature. A...
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...
Matches 501 - 550 out of 894 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >