161 |
Set of progressive multifocal ophthalmic lenses |
US09254698 |
1999-06-17 |
US06318859B1 |
2001-11-20 |
Thierry Baudart; Bernard Bourdoncle; Thierry Laloux; Claude Pedrono; Claire Rossier |
The invention concerns a set of progressive multifocal opthalmic lenses, each having a first progressive multifocal surface and a second surface preferably spherical. It proposes to define the set of lenses with regard to the optical characteristics of the lenses, and particularly wearer power and oblique astigmatism, in worn conditions. For this purpose, the invention defines an ergorama associating with each sight direction in worn conditions a target object point, and a given power. This ergorama supplies a power target for a definition by optimisation of the lenses, and is used in a radii plotting programme for calculating the optical characteristics during optimisation. The set of lenses has substantially identical optical performances for a given addition, whatever the power of the far vision reference point. |
162 |
Progressive lens |
US09486978 |
2000-05-18 |
US06260967B1 |
2001-07-17 |
Simon John Edwards; Saulius Raymond Varnas; David H. Sklar |
A progressive ophthalmic lens element having a front surface that includes an upper viewing zone having a surface power suitable for distance vision, a lower viewing zone having a surface power suitable for near vision, and a corridor of relatively low astigmatism connecting the upper and lower viewing zones, the corridor being a part of an intermediate viewing zone having a surface power varying from that of the upper viewing zone to that of the lower viewing zone. The progressive ophthalmic lens element also has a back surface. The invention is then characterized by the front surface including at least one correction to improve optical performance of the lens element by at least partially compensating for a cylinder correction applied to, or to be applied to, the backsurface. |
163 |
Progressive lens |
US171465 |
1998-12-15 |
US6155681A |
2000-12-05 |
Dimitrios Jack Kris; Simon John Edwards; Scott Warren Fisher; Saulius Raymond Varnas |
A progressive ophthalmic lens element including a lens surface having upper viewing zone providing good optical quality at a predetermined low surface power over a large area of vision; said predetermined power being determined by the viewer's distance prescription (R.sub.x) the horizontal fitting position normally being determined by the inter pupillary distance of the wearer, and the vertical fitting position normally being determined by the vertical frame midpoint; a lower viewing zone of higher surface power providing an enhanced range of vision for intermediate or lesser viewing distances; and a corridor of relatively low astigmatism extending therebetween; wherein the contours of mean surface power and/or surface astigmatism within the lower viewing zone, upper viewing zone and corridor are generally symmetric about a vertical lens meridian. |
164 |
Spectacle lens with spherical front side and multifocal back side and
process for its production |
US8260 |
1998-01-16 |
US6089713A |
2000-07-18 |
Albrecht Hof; Adalbert Hanssen |
A spectacle lens has a spherical or rotationally symmetrical, aspheric front side and a back side prescription surface. All individual requirements of the prescription for spectacles, consisting of spherical, astigmatic and prismatic power and their distribution on the x and y axes on the spectacle lens surface, are fulfilled by the prescription surface. The back surface of the spectacle lens is a multifocal surface without point symmetry and/or axial symmetry. A process that produces spectacle lenses with multifocal power starts with variants of a first or of a few spectacle lens(es) that originate according to prior art design considerations. The semi-finished lenses have spherical or aspheric, rotationally symmetrical, convex front surfaces, with about 10 different radii. The whole matching of individual required dioptric power takes place on a free-form back surface of the spectacle lens facing the eye of the wearer. The shape of this back surface follows from an individual optimization calculation using the design of the predefined starting surface as the start of the optimization. |
165 |
Single-vision ophthalmic lens series |
US119346 |
1998-07-20 |
US6089710A |
2000-07-18 |
Robert R. Zeidler |
A series of single-vision ophthalmic lenses for use in the correction of vision for myopia, hypermetropia, or astigmatism is described in which the series design is selected for the economic manufacture of, for example, thermoplastic ophthalmic lenses using injection molding. Injection molding methodology, when utilized appropriately, permits simplifications in the primary and secondary manufacture of ophthalmic lenses not usually practical when using other commonly-understood means of lens manufacture. Benefits of the lens series described include enhanced productivity of primary manufacture, improved cosmesis in certain types of secondary manufacture, and simplification of certain types of secondary manufacture that add further benefits to ophthalmic lenses following primary manufacture. |
166 |
Contact lenses and method of fitting contact lenses |
US576289 |
1995-12-21 |
US5835192A |
1998-11-10 |
Jeffrey H. Roffman; Edgar V. Menezes; Yulin X. Lewis; Timothy R. Poling; Michel Guillon |
A design family of contact lenses includes a central area utilized for distance vision, surrounded by multiple alternating annuli of near and distance optical powers, surrounded by a peripheral distance zone. The design can also be used in intraocular lenses (IOL). The distance optical power is constant across the design family of lenses, but the near optical power increases as a subject's presbyopia increases. The design family of contact lenses can be fitted to a patient in a standard fashion by fitting both eyes to the best distance visual acuity (VA), and obtaining near acuity from the near annuli. A modified monovision method fits the patient's dominant eye with a contact lens as described having the full prescription distance power and fitting the nondominant eye with a contact lens as described having a distance optical power between the full prescription distance optical power and the near optical power. Specifically, the nondominant eye is fitted with a contact lens as described but having a distance power between 50% and 100% of the range between the prescription near and distance optical powers, biased towards the distance optical power. |
167 |
Contact lenses providing improved visual acuity |
US760789 |
1996-12-05 |
US5815239A |
1998-09-29 |
Judith E. Chapman; Ian G. Cox; Graham W. Biddle; Timothy L. Comstock; Kevin J. DeRyke |
A method for obtaining contact lenses having optimized visual acuity involves providing the anterior surface or the posterior surface of the contact lens with a conic section having a shape factor value within the range of about 0.3 to 2.0, the shape factor value being selected so as to adjust spherical aberration in the central optical zone to a value within the range of about -0.2 diopter to about -0.6 diopter and to a value that provides optimal visual acuity. |
168 |
Progressive power multifocal lens |
US633073 |
1996-04-16 |
US5710615A |
1998-01-20 |
Akira Kitani |
A progressive power multifocal lens designed by attaching importance to an intermediate vision and a near vision in such a manner as to ensure broad intermediate vision viewing portion and near vision viewing portion and to have a well-balanced viewing zone among the distance, near and middle portions, whereby a resultant image of an object is little varied or fluctuated, especially, in lateral directions. |
169 |
Progressive power ophthalmic lens |
US508112 |
1995-07-27 |
US5691798A |
1997-11-25 |
Scott W. Smith |
A progressive power ophthalmic lens having a spherical distance viewing area, a progressive power portion with a decreasing radius of curvature along an umbilic meridian, and a spherical near viewing area. Power distribution functions are optimized for smooth transition along the principal directions of gaze. A statistically smoothed polynomial function of the general form Pm=b.sub.1 +b.sub.2 X+b.sub.3 X.sup.2 +. . . +b.sub.9 X.sup.8 defines the mean power at any point on the lens surface to regulate curvature variation. Thereby providing continuity of the visual field at the boundaries of the principal lens zones and creating an integrated visual field as the eye traverses the lens. |
170 |
Rigid gas permeable lenses |
US684322 |
1991-04-12 |
US5349394A |
1994-09-20 |
Michael H. Freeman; William E. Meyers |
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 with a lens to determine an acceptable BCOR value for the patient;determining the corrective prescription for that patient; andsupplying the patient with a lens having an acceptable BCOR value and the correct prescription.The lens supplied is manufactured in the same geometry and fitting characteristics as the lens from the set used in fitting and adjusted to the correct prescription power from the fixed power by diffractive means. |
171 |
Progressive lens series |
US979628 |
1992-11-20 |
US5285222A |
1994-02-08 |
Richard P. Waido |
A progressive power lens series in which the surface of each lens body has first and second vision portions which differ in power in accordance with a power curve which lies entirely in the y-z plane of a Cartesian coordinate system and which is the umbilical portion of the principal meridian of the progressive surface with the curvature of the surface in at least one of said vision portions spreading away from the power curve in accordance with a spreading function defined by the intersection of nested non-bipolar conic sections or nested hyperbolic cosines with the x-y plane of the coordinate system. |
172 |
Aspheric corneal contact lens series |
US3482906D |
1965-10-04 |
US3482906A |
1969-12-09 |
VOLK DAVID |
|
173 |
Apparatus for formation of an ophthalmic lens precursor and lens |
US15824690 |
2017-11-28 |
US10126567B2 |
2018-11-13 |
Michael F Widman; John B Enns; P. Mark Powell; Peter W Sites |
This invention discloses apparatus for generating an ophthalmic lens with at least a portion of one surface free-formed from a Reactive Mixture. In some embodiments, an ophthalmic lens is formed on a substrate with an arcuate optical quality surface via a source of actinic radiation controllable to cure a definable portion of a volume of Reactive Mixture. |
174 |
OPHTHALMIC LENS PROCESSING APPARATUS WITH IMPROVED USER ACCESSIBILITY |
US15439393 |
2017-02-22 |
US20180236624A1 |
2018-08-23 |
Robert Kenneth DEWEES |
An ophthalmic lens processing apparatus is provided that includes a housing, a support structure, and ophthalmic lens processing components configured to perform an ophthalmic process on an ophthalmic lens. The housing includes a case and a user access member. The support structure includes a support plate received within and movably connected to the case. At least one of the ophthalmic lens processing components is mounted to and movable with the support plate. Also provided is a method of improving user accessibility to the at least one ophthalmic lens processing components of the ophthalmic lens processing apparatus. |
175 |
Rigid, Gas-Permeable Polymer As Over-Mold And Sealant For Adaptive Ophthalmic Lens |
US15275271 |
2016-09-23 |
US20180088351A1 |
2018-03-29 |
Scott Kennedy; Jeremy Emken |
An eye-mountable device is provided that includes electronics encapsulated within a rigid, gas-permeable polymeric material. The eye-mountable device includes an electroactive lens that can be operated to control an overall optical power of the eye-mountable device to restore an amount of visual accommodation of an eye to which the device is mounted. A method for fabricating the eye-mountable device is provided that includes applying an adhesive to secure lenses of the electroactive lens together and to maintain an amount of liquid crystal in the space between the lenses. The rigid, gas-permeable polymeric material can then be formed around the electroactive lens, electronics, or other elements of the eye-mountable device. The rigid, gas-permeable polymeric material can be mountable to a corneal surface of an eye or can be disposed on or within a soft polymeric material that is mountable to the corneal surface of the eye. |
176 |
APPARATUS FOR FORMATION OF AN OPHTHALMIC LENS PRECURSOR AND LENS |
US15824690 |
2017-11-28 |
US20180081198A1 |
2018-03-22 |
Michael F Widman; John B Enns; P. Mark Powell; Peter W Sites |
This invention discloses apparatus for generating an ophthalmic lens with at least a portion of one surface free-formed from a Reactive Mixture. In some embodiments, an ophthalmic lens is formed on a substrate with an arcuate optical quality surface via a source of actinic radiation controllable to cure a definable portion of a volume of Reactive Mixture. |
177 |
Process for Customizing an Active Contact Lens |
US15647134 |
2017-07-11 |
US20180017811A1 |
2018-01-18 |
Eric Anthony Perozziello; Kuang-mon Ashley Tuan; Edward John Palen; Michael West Wiemer |
A method for customizing active contact lenses, such as contact lens displays, for a plurality of wearers includes the following: Contact lens precursors are obtained for a plurality of wearers. The contact lens precursors include active electronics. The same contact lens precursors are used as a starting point to generate active contact lenses for many different individuals, but they are processed into active contact lenses that are customized for each individual wearer. |
178 |
Method for reducing the thickness of a lens shape and uncut lens blank |
US14719039 |
2015-05-21 |
US09864212B2 |
2018-01-09 |
Ray Steven Spratt; Timo Kratzer; Philipp Ellinger |
The current invention is directed to a method, in particular a computer-implemented method, for providing a modified lens design for an uncut lens blank, in particular through the use of a non-transitory computer readable medium. Further, a method, in particular a computer-implemented method, for reducing a thickness of an original lens design of an uncut lens blank, in particular through the use of a non-transitory computer readable medium, is provided. Furthermore, a method for manufacturing an uncut lens blank and an uncut lens blank are provided. |
179 |
METHOD FOR DETERMINING A LENS DESIGN OF AN OPTICAL LENS ADAPTED TO A WEARER |
US15517379 |
2015-09-22 |
US20170299888A1 |
2017-10-19 |
Delphine TRANVOUEZ; Isabelle POULAIN; Gildas MARIN; Laurent CALIXTE |
A method, implemented by a computer, for determining a lens design of an optical lens adapted to a wearer, the method including: providing a wearer parameter; a lens design determining, during which the lens design of the optical lens adapted to the wearer is determined based at least on the wearer parameters. The wearer parameters include at least optical distortion sensitivity data representative of sensitivity of the wearer to optical distortions. |
180 |
METHOD FOR OPTIMIZING THE POSITION OF AN OPTICAL LENS IN A LENS BLANK |
US15507603 |
2015-09-23 |
US20170242268A1 |
2017-08-24 |
Thierry BAUDART; Florence MOREL |
A method includes: providing lens blank data relating to the first, second and peripheral blank surfaces of the lens blank; providing optical lens data relating to the first, second and peripheral optical surfaces of the optical lens; virtually positioning the optical lens in the lens blank in a position so that at least one of the first optical surface or the second optical surface is included within the lens blank; evaluating a manufacturing prism cost function, the machining prism cost function corresponding to a weighed sum of the first manufacturing prism to be used when blocking the lens blank on the second surface to machine the first optical surface and of the second manufacturing prism to be used when blocking the lens blank on the first optical surface to machine the second optical surface. The positioning and evaluation steps are repeated so as to minimize the manufacturing prism cost function. |