[go: up one dir, main page]

WO2007146265A2 - Région à surface progressive statique en communication optique avec un élément optique dynamique - Google Patents

Région à surface progressive statique en communication optique avec un élément optique dynamique Download PDF

Info

Publication number
WO2007146265A2
WO2007146265A2 PCT/US2007/013743 US2007013743W WO2007146265A2 WO 2007146265 A2 WO2007146265 A2 WO 2007146265A2 US 2007013743 W US2007013743 W US 2007013743W WO 2007146265 A2 WO2007146265 A2 WO 2007146265A2
Authority
WO
WIPO (PCT)
Prior art keywords
lens
dynamic optic
ophthalmic lens
optic
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2007/013743
Other languages
English (en)
Other versions
WO2007146265A3 (fr
Inventor
Ronald D. Blum
William Kokonaski
Venkatramani S. Iyer
Joshua N. Haddock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PixelOptics Inc
Original Assignee
PixelOptics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP07795996A priority Critical patent/EP2030074A4/fr
Priority to CN2007800300606A priority patent/CN101501552B/zh
Priority to HK10100667.0A priority patent/HK1137056B/xx
Priority to BRPI0713008-2A priority patent/BRPI0713008A2/pt
Priority to KR1020097000557A priority patent/KR101454672B1/ko
Priority to AU2007258383A priority patent/AU2007258383B2/en
Priority to MX2008015905A priority patent/MX2008015905A/es
Priority to CA2655349A priority patent/CA2655349C/fr
Application filed by PixelOptics Inc filed Critical PixelOptics Inc
Priority to JP2009515447A priority patent/JP2009540386A/ja
Publication of WO2007146265A2 publication Critical patent/WO2007146265A2/fr
Publication of WO2007146265A3 publication Critical patent/WO2007146265A3/fr
Priority to IL195879A priority patent/IL195879A0/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G02C7/063—Shape of the progressive surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G02C7/068—Special properties achieved by the combination of the front and back surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/08—Auxiliary lenses; Arrangements for varying focal length
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/08—Auxiliary lenses; Arrangements for varying focal length
    • G02C7/081—Ophthalmic lenses with variable focal length
    • G02C7/083—Electrooptic lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
    • G02C2202/20—Diffractive and Fresnel lenses or lens portions

Definitions

  • the present invention relates to multifocal ophthalmic lenses, lens designs, lens systems, and eyeweai products oi devices utilized on, in oi about the eye More specifically, the present invention relates to multifocal ophthalmic lenses, lens designs, lens systems, and eyeweai products which provide an optical effect/ end result that in most cases reduces unwanted distortion, unwanted astigmatism, and vision compromises associated with Progiessive Addition Lenses to a very acceptable iange for the weaier
  • J Fiesbyopia is the loss of accommodation of the crystalline lens of the human eye that often accompanies aging This loss of accommodation results in an inability to focus on near distance objects
  • a multifocal lens is a lens that has more than one focal length (/ e optical power) for correcting focusing problems across a range of distances
  • Multifocal ophthalmic lenses work by means of a division of the lens's area into regions of different optical powers Typically, a relatively Iaige aiea located in the upper portion of the lens co ⁇ ects for far distance vision e ⁇ ors, if any A small area located in the bottom poition of the lens provides additional optical power foi correcting neai distance vision e ⁇ oxs caused by presbyopia
  • a multifocal lens may also contain a small iegion located near the middle poition of the lens which provides additional optical power for correcting intermediate distance vision errors
  • the transition between the regions of different optical power may be either abiupt, as is the case for bifocal and bifocal lenses, 01 smooth and continuous, as is the case with Progressive Addition Lenses
  • Progressive Addition Lenses arc a type of multifocal lenses that comptise a gradient of continuously increasing positive dioptric optical power fiom the beginning of the far distance viewing zone of the lens to the near distance viewing zone in the lower portion of the lens This progression of optical power generally starts at approximately what is known as the fitting cioss or fitting point of the lens and continues until the full add power is realized in the near distance viewing zone and then plateaus.
  • PALs While PALs are now widely accepted and in vogue within the USA and throughout the world as a correction for presbyopia, they also have seiious vision compromises. These compromises include but aie not limited to unwanted astigmatism, distortion, and perceptual blur These vision compromises may affect a user's horizontal viewing width, which is the width of the visual field that can be seen clearly as a user looks from side to side while focused at a given distance
  • PAL lenses may have a narrow horizontal viewing width when focusing at an intermediate distance, which can make viewing a large section of a computer screen difficult
  • PAL lenses may have a narrow horizontal viewing width when focusing at a near distance, which can make viewing the complete page of a book or newspaper difficult
  • Far distance vision may be similarly affected PAL lenses may also present a difficulty to a wearer when playing sports due to the disloition of the lenses Additionally, because the optical add power is placed in the bottom region of the PAL lens, the wearer must tilt his or hei head back to make use of this
  • the amount of near optical power required is dhectly related to the amount of accommodative amplitude (near distance focusing ability) the individual has left in his or eyes
  • the amount of accommodative amplitude decreases Accommodative amplitude may also decrease for various health reasons Therefore, as one ages and becomes more presbyopic, the optical power needed to correct one's ability to focus at a near viewing distance and an intermediate viewing distance becomes stronger in terms of the needed dioptric optical add power
  • an individual 45 years old may need +1 00 diopters of near viewing distance optical power to see cleaily at a near point distance
  • an individual 80 years old may need +2.75 diopters to +3.00 diopters of near viewing distance optical powei to see clearly at the same near point distance
  • the degree of vision compromises in PAL lenses increases with dioptric optical add powei, a more highly
  • a conventional PAL with a +1 0OD near optical power may have approximately +1 0OD or less of unwanted astigmatism
  • a conventional PAL with a +2 5OD near optical power may have approximately +2 75D or moie of unwanted astigmatism
  • a conventional PAL with a +3-25D near point optical power may have approximately +3 75D oi more of unwanted astigmatism
  • the unwanted astigmatism found within the PAL increases at a greater than linear rate with respect to the neai distance add power .
  • an ophthalmic lens foi a user having a fitting point may include a progressive addition iegion having a channel, wherein the progressive addition region has an add power therein
  • the ophthalmic lens may fiirthei include a dynamic optic in optical communication with the progressive addition region having an optical power when activated
  • an ophthalmic lens for a user having a fitting point may include a progressive addition tegion having a channel, wherein the progressive addition region has an add power therein
  • the ophthalmic lens may furthei include a dynamic optic in optical communication with the progressive addition region having an optical power when activated, wheiein the dynamic optic has a top peripheral edge located within approximately 15 mm of the fitting point
  • Figure IA shows an embodiment of a low add powei Progressive Addition Lens having a fitting point and a piogtessive addition region
  • Figuie IB shows a graph of optical powei 130 taken along a cross section of the lens of Figure IA 3 along axis line AA;
  • Figuie 2A shows an embodiment of the invention having a low add powei Piogiessive Addition Lens combined with a much laiger dynamic optic placed such that a portion of the dynamic optic lies above a fitting point of the lens;
  • Figuie 2B shows the combined lens of Figuie 2A having a combined optical powei that is created because the dynamic optic is in optical communication with a progressive addition region;
  • Figure 3 A shows an embodiment of the invention having a low add power Progressive Addition Lens and a dynamic optic placed such that a portion of the dynamic optic lies above a fitting point of the lens
  • Figure 3A shows when the dynamic optic is deactivated, the optical power taken along a line of sight from a wearei's eye through the fitting point provides the weaiei with correct far distance vision
  • Figuie 3B shows the lens of Figure 3A
  • Figure 3B shows when the dynamic optic is activated, the optical power taken along a line of sight fiom the wearei's eye through the fitting point provides the wearer with a collect intermediate distance focusing power
  • Figuie 3C shows the lens of Figure 3A Figuie 3C shows when the dynamic optic is activated, the optical power taken along a line of sight from the wearet 's eye through the near distance viewing zone provides the wearer with a correct near distance focusing powei;
  • Figure 4A shows an embodiment of the invention having a low add power Progiessive Addition Lens combined with a dynamic optic that is larger than a piogressive addition region and/ or channel and located above a fitting point of the lens;
  • Figuie 4B shows the optical powei that is provided by the fixed piogressive addition surface or region taken along axis line AA of Figuie 4A;
  • Figure 4C shows the optical power that is piovided by the dynamic optic when activated taken along axis line AA of Figure 4A;
  • Figuie 4D shows the combined poweis of the dynamic electio-active optic and the fixed progressive addition region taken along axis line AA of Figuie 4A Figuie 4D shows that the top and bottom distorted blend area of the dynamic electro-active optic are outside both the fitting point and the piogtessive addition reading aiea and channel;
  • Figure SA shows an embodiment of the invention in which a dynamic optic is located below a fitting point of a low add power Progressive Addition lens
  • Figure 5B shows optical powei taken along axis line AA of Figure 5A;
  • Figures 6A - 6C show various embodiments of the size of the dynamic optic.
  • Figures 7A - 7K show unwanted astigmatic contour maps comparing an existing state- of-the-art Progressive Addition Lens and embodiments of the invention which include a low add power Progressive Addition Lens and a dynamic optic.
  • Add Power The optical power added to the far distance viewing optical power which is required for clear near distance viewing in a multifocal lens
  • the actual optical power in the near distance portion of the multifocal lens is -1 0OD
  • Add powei is sometimes referred to as plus power
  • Add power may be further distinguished by refe ⁇ ing to "near viewing distance add power" which refeis to the add power in the near viewing distance portion of the lens and "intermediate viewing distance add power" which iefeis to the add power in the intermediate viewing distance portion of the lens
  • the intermediate viewing distance add power is approximately 50% of the neat viewing distance add power
  • the individual would have +1 0OD add power for intermediate distance viewing and the actual total optical power in the intermediate viewing distance portion of the multifocal lens is -2 0OD
  • Blend Zone An optical powei transition along a peripheral edge of a lens whereby the optical power continuously transitions across the blend zone from a first corrective power to that of a second corrective power or vice versa
  • the blend zone is designed to have as small a width as possible
  • a peripheral edge of a dynamic optic may include a blend zone so as to ieduce the visibility of the dynamic optic
  • a blend zone is utilized foi cosmetic enhancement ieasons and also to enhance vision functionality.
  • a blend zone is typically not consideied a usable portion of the lens due to its high unwanted astigmatism
  • a blend zone is also known as a transition zone
  • Channel The region of a Progtessive Addition Lens defined by increasing plus optical powei which extends fiom the fai distance optical powei iegion oi zone to the neai distance optical powei iegion 01 zone This optical powei piogiession staits in an aiea of the PAL known as the fitting point and ends in the near distance viewing zone The channel is sometimes ieferted to as the corridor
  • Channel Length The channel length is the distance measured from the fitting point to the location in the channel where the add power is within approximately 85% of the specified neat distance viewing power
  • Channel Width The na ⁇ owest portion of the channel bounded by an unwanted astigmatism that is above approximately +1.00D This definition is useful when comparing PAL lenses due to the fact that a widei channel width generally correlates with less distortion, better visual performance, increased visual comfort, and easier adaptation for the wearer
  • Contour Maps Plots that are generated from measu ⁇ ng and plotting the unwanted astigmatic optical powei of a Progressive Addition Lens.
  • the contour plot can be generated with various sensitivities of astigmatic optical power thus providing a visual picture ot where and to what extent a Progressive Addition Lens possesses unwanted astigmatism as part of its optical design Analysis of such maps is typically used to quantify the channel length, channel width, reading width and fai distance width of a PAL Contour maps may also be referred to as unwanted astigmatic power maps These maps can also be used to measure and portray optical power in var ious parts of the lens
  • Conventional Channel Length Due to aesthetic concerns ot trends in eyewear fashion, it may be desirable to have a lens that is foreshoitened vertically In such a lens the channe] is naturally also shorter
  • Conventional channel length refers to the length of a channel in a non- foreshortened PAL lens.
  • Dynamic lens A lens with an optical power which is alterable with the application of electrical energy, mechanical energy oi force Either the entire lens may have an alterable optical power, 01 only a poition, region 01 zone of the lens may have an altetable optical power ⁇ he optical power of such a lens is dynamic or tunable such that the optical powei can be switched between two 01 more optical poweis
  • One of the optical powers may be that of substantially no optical power
  • dynamic lenses include electro-active lenses, meniscus lenses, fluid lenses, movable dynamic optics having one or more components, gas lenses, and membiane lenses having a member capable of being deformed.
  • a dynamic lens may also be referred to as a dynamic optic
  • Fat 1 Distance Reference Point ⁇ ieference point located appioximately 3 - 4 mm above the fitting cioss where the far distance piesciiption oi far distance optical powei of the lens can be measured easily,
  • Fat' Distance Viewing Zone The poition of a lens containing an optical power which allows a user to see correctly at a fax viewing distance
  • Fat Distance Width The narrowest horizontal width within the far distance viewing portion of the lens which piovides cleai, mostly distoition-f ⁇ ee correction with an optical power within 025D of the wearei's far distance viewing optical power correction.
  • Far Viewing Distance The distance to which one looks, by way of example only, when viewing beyond the edge of one's desk, when driving a cai, when looking at a distant mountain, or when watching a movie This distance is usually, but not always, considered to be approximately 32 inches oi greater from the eye
  • the far viewing distance may also be referred to as a fai distance and a far distance point
  • Fitting Cross/ Fitting Point A reference point on a PAL that represents the approximate location of the wearer's pupil when looking straight ahead through the lens once the lens is mounted in an eyeglass fiame and positioned on the wearer's face
  • the fitting cross/ fitting point is usually, but not always, located 2 - 5 mm vertically above the stait of the channel
  • the fitting cross typically has a veiy slight amount of plus optical power ranging fiom just over +0 00 Diopters to appioximately +0 12 Diopters.
  • Hard Progressive Addition Lens A Piogtessive Addition Lens with a less gradual, steepei transition between the far distance correction and the neai distance correction In a hard PAL the unwanted distortion may be below the fitting point and not spread out into the periphery of the lens
  • a haid PAL may also have a shorter channel length and a narrower channel width
  • a "modified hard Progressive Addition Lens” is a hard PAL which is modified to have a limited numbei of characteristics of a soft PAL such as a more gradual optical power transition, a longer channel, a wider channel, more unwanted astigmatism spread out into the periphery of the lens, and less unwanted astigmatism below the fitting point
  • Inter mediate Distance Viewing Zone The portion of a lens containing an optical power which allows a user to see cotrectly at an intermediate viewing distance.
  • Intermediate Viewing Distance The distance to which one looks, by way of example only, when reading a newspaper, when working on a computer, when washing dishes in a sink, or when ironing clothing This distance is usually, but not always, considered to be between approximately 16 inches and appiOximately 32 inches from the eye
  • the intermediate viewing distance may also be referred to as an inteimediate distance and an intermediate distance point
  • Lens Any device or portion of a device that causes light to converge or diveige
  • the device may be static or dynamic
  • a lens may be refractive or dififiactive
  • a lens may be either concave, convex or piano on one or both surfaces
  • a lens may be spherical, cylindrical, prismatic or a combination thereof.
  • a lens may be made of optical glass, plastic oi resin
  • a lens may also be referred to as an optical element, an optical zone, an optical region, an optical power region or an optic It should be pointed out that within the optical industry a lens can be referred to as a lens even if it has zero optical power
  • Lens Blank A device made of optical material that may be shaped into a lens
  • a lens blank may be finished meaning that the lens blank has been shaped to have an optical power on both external surfaces
  • a lens blank may be semi-finished meaning that the lens blank has been shaped to have an optical power on only one external suiface
  • a lens blank may be unfinished meaning that the lens blank has not been shaped to have an optical power on either external surface
  • a surface of an unfinished or semi-finished tens blank may be finished by means of a fabrication ptocess known as fiee-foiming or by more tiaditional surfacing and polishing
  • Multifocal Lens A lens having more than one focal point or optical power Such lenses may be static oi dynamic
  • static multifocal lenses include a bifocal lens, trifocal lens oi a Ptogiessive Addition Lens
  • dynamic multifocal lenses include electro- active lenses whereby various optical powers may be created in the lens depending on the types of electrodes used, voltages applied to the electiodes and index of iefiaction alteied within a thin layer of liquid crystal
  • Multifocal lenses may also be a combination of static and dynamic
  • an electro-active element may be used in optical communication with a static spherical lens, static single vision lens, static multifocal lens such as, by way of example only, a Progressive Addition Lens In most, but not all, cases, multifocal lenses aie refractive lenses
  • Near Distance Vievring Zone The portion of a lens containing an optical power which allows a usei to see coiiectly at a near viewing distance
  • Near Viewing Distance The distance to which one looks, by way of example only, when leading a book, when threading a needle, or when leading instructions on a pill bottle This distance is usually, but not always, considered to be between approximately 12 inches and approximately 16 inches from the eye
  • the neat viewing distance may also be refeired to as a near distance and a neai distance point
  • Office Lens/ Office PAL A specially designed Progressive Addition Lens that provides intermediate distance vision above the fitting cross, a wider channel width and also a wider leading width This is accomplished by means of an optical design which spieads the unwanted astigmatism above the fitting cioss and which replaces the far distance vision zone with that of a mostly intermediate distance vision zone Because of these features, this type of PAL is well- suited for desk woik, but one cannot drive his or her car or use rt foi walking around the office or home since the lens contains no far distance viewing aiea
  • Ophthalmic Lens A lens suitable for vision correction which includes a spectacle lens, a contact lens, an inha-ocular lens, a corneal m-lay, and a corneal on-lay
  • Optical Communication The condition whereby two oi mote optics of given optical power are aligned in a manner such that light passing through the aligned optics experiences a combined optical power equal to the sum of the optical powers of the individual elements
  • Patterned Electrodes Electrodes utilized in an electio-active lens such that with the application of appropriate voltages to the electrodes, the optical power created by the liquid crystal is created diffiactively regardless of the size, shape, and arrangement of the electrodes P oi example, a diffractive optical effect can be dynamically produced within the liquid ciystal by using concentric iing shaped electiodes.
  • Pixilated Electrodes Electrodes utilized in an electio-active lens that ate individually addressable iegaidless of the size, shape, and arrangement of the electrodes Furthermore, because the electiodes are individually addressable, any aibitrary pattern of voltages may be applied to the electiodes.
  • pixilated electrodes may be squares or rectangles a ⁇ anged in a Cartesian array or hexagons arranged in a hexagonal array Pixilated electrodes need not be regular shapes that fit to a giid
  • pixilated electiodes may be concentric rings if every iing is individually addressable Concentric pixilated electrodes can be individually addressed to create a diffractive optical effect
  • Progressive Addition Region A iegion of a lens having a first optical power in a first portion of the region and a second optical powex in a second portion of the region wherein a continuous change in optical power exists therebetween
  • a region of a lens may have a far viewing distance optical power at one end of the legion.
  • the optical powei may continuously increase in plus power across the region, to an intermediate viewing distance optical powei and then to a near viewing distance optical power at the opposite end of the region Aftei the optical power has reached a near viewing distance optical power, the optical power may decrease in such a way that the optical power of this progressive addition region transitions back into the far viewing distance optical power.
  • a progressive addition region may be on a surface of a lens or embedded within a lens When a progressive addition region is on the surface and comprises a surface topography it is known as a progressive addition surface
  • Reading Width The narrowest horizontal width within the near distance viewing portion of the lens which provides clear, mostly distortion free correction with an optical power within 025D of the wearer 's neat distance viewing optical power correction
  • Short Channel Length Due to aesthetic concerns or trends in eyeweai fashion, it may be desirable to have a lens that is foreshortened vertically Jn such a lens the channel is naturally also shorter Short channel length iefeis to the length of a channel in a foreshoitencd PAL lens These channel lengths are usually, but not always between approximately 11 mm and approximately 15 mm Generally, a shorter channel length means a narrower channel width and more unwanted astigmatism Shorter channel designs are often associated with "hard” progressives, since the transition between far distance correction and near distance correction is harder due to the steeper increase in optical power [0060] Soft Progressive Addition Lens: A Progressive Addition Lens with a more giadual transition between the far distance correction and the near distance correction.
  • a soft PAL may also have a longet channel length and a widei channel width
  • a "modified soft Progressive Addition Lens” is a soft PAL which is modified to have a limited numbei of characteristics of a hard PAl. such as a steepei optical power transition, a shoitei channel, a narrower channel, more unwanted astigmatism pushed into the viewing poition of the lens, and more unwanted astigmatism below the fitting point
  • Static Lens A lens having an optical power which is not alterable with the application of electrical energy, mechanical energy oi foice
  • static lenses include spherical lenses, cylindrical lenses, Progressive Addition Lenses, bifocals, and trifocals
  • a static lens may also be referred to as a fixed lens
  • Unwanted Astigmatism Unwanted abe ⁇ ations, distortions oi astigmatism found within a Progressive Addition Lens that are not part of the patient's prescribed vision correction, but rathet are inherent in the optical design of a PAL due to the smooth gradient of optical power between the viewing zones.
  • a lens may have unwanted astigmatism across drffeient areas of the lens of vaiious diopt ⁇ c poweis, the unwanted astigmatism in the lens generally refers to the maximum unwanted astigmatism that is found in the lens Unwanted astigmatism may also refer to the unwanted astigmatism located within a specific portion of a lens as opposed to the lens as a whole In such a case qualifying language is used to indicate that only the unwanted astigmatism within the specific poition of the lens is being considered
  • the invention contemplates, by way of example only, electro-active lenses, fluid lenses, gas lenses, membrane lenses, and mechanical movable lenses, etc Examples of such lenses can be found in Blum et al U S. Patent Numbers 6,517,203, 6,491,394, 6,619,799, Epstein and Kuitin U S Patent Numbers 7,008,054, 6,040,947, 5,668,620, 5,999,328. 5,956,183, 6,893,124, Silver U S Patent Numbers 4,890,903, 6,069,742, 7,085,065, 6,188,525, 6,618,208, Stoner U S Patent Number 5,182,585, and Quaglia U S Patent Number 5,229,885
  • the invention disclosed herein relates to embodiments of an optical design, lens, and eyeweai system that solve many, it not most, of the problems associated with PALs. Tn addition, the invention disclosed heiein significantly removes most of the vision compromises associated with PALs.
  • the invention piovides a means of achieving the piopei far, inteimediate and neai distance optical powers for the weaier while providing continuous focusing ability for vaiious distances, similar to that of a PAL.
  • the invention at the same time keeps the unwanted astigmatism to a maximum of appioximately 1.50D for certain high add power prescriptions such as a +3.00D, +3 25D and +3.50D. Hovvevei, in most cases, the invention keeps the unwanted astigmatism to a maximum of appioximately 1.0OD oi less.
  • the invention is based upon aligning a low add power PAL with a dynamic lens such that the dynamic lens and the low add power PAL are in optical communication, whereby the dynamic lens piovides the additional needed optical power foi the wearei to see cleaily at aneai distance.
  • the dynamic lens may be an electio-active element
  • an electro-active optic may be embedded within oi attached to a surface of an optical substrate
  • the optical substrate may be a finished, semi-finished or unfinished lens blank.
  • the lens blank may be finished during manufactui ing of the lens to have one oi more optical powers.
  • An electio-active optic may also be embedded within or attached to a surface of a conventional optical lens.
  • the conventional optical lens may be a single focus lens oi a multifocal lens such as a Progressive Addition Lens or a bifocal oi trifocal lens
  • the electio-active optic may be located in the entire viewing area of the electro-active lens or in just a portion thereof.
  • the electio-active optic may be spaced from the peripheral edge of the optical substrate for edging the electro-active lens for spectacles.
  • the electro-active element may be located near the top, middle oi bottom portion of the lens.. When substantially no voltage is applied, the electro-active optic may be in a deactivated state in which it provides substantially no optical power .
  • the electio-active optic when substantially no voltage is applied, may have substantially the same refractive index as the optical substrate or conventional lens in which it is embedded ox attached.
  • the electro- active optic When voltage is applied, the electro- active optic may be in an activated state in which it piovides optical add power .
  • the electro-active optic when voltage is applied, may have a diffeient refractive index than the optical substrate or conventional lens in which it is embedded oi attached.
  • Electio-active lenses may be used to coirect for conventional oi non-conventional errors of the eye.
  • the correction may be created by the electro-active element, the optical substrate or conventional optical lens oi by a combination of the two
  • Conventional e ⁇ ois of the eye include low ordei aberrations such as near-sightedness, far-sightedness, presbyopia, and astigmatism.
  • Non-conventional e ⁇ ots of the eye include highei-oider abe ⁇ ations that can be caused by oculai layei inegulaiities
  • Liquid crystal may be used as a poition of the electro-active optic as the lefractrve index of a liquid crystal can be changed by generating an electtic field across the liquid crystal. Such an electric field may be generated by applying one or mote voltages to electrodes located on both sides of the liquid crystal
  • the electrodes may be substantially transparent and manufactured from substantially transparent conductive materials such as Indium Tin Oxide (TTO) or othei such mateiials which are well-known in the ait Liquid crystal based electro- active optics may be particularly well suited foi use as a portion of the electro-active optic since the liquid crystal can provide the required range of index change so as to provide optical add powers of piano to +3 0OD This range of optical add powers may be capable of correcting presbyopia in the majority of patients
  • a thin layei of liquid crystal (less than 10 ⁇ m) may be used to construct the electro- active optic
  • the thin layer of liquid crystal may be sandwiched between two transpending substrates
  • the two substrates may also be sealed along their peripheral edge such that the liquid crystal is sealed within the substrates in an substantially airtight manner
  • Layers of a transparent, conductive material may be deposited on the inneT surfaces of the two, mostly planar, transparent substrates.
  • Electrodes may be patterned For example, a diffractive optical effect can be dynamically produced within the liquid crystal by using concentric ring shaped electrodes deposited on at least one of the substrates. Such an optical effect can produce an optical add powei based upon the radii of the lings, the widths of the rings, and the range of voltages separately applied to the different lings Electrodes may be pixilated.
  • pixilated electrodes may be squares or rectangles arranged in a Cartesian aitay or hexagons arranged in a hexagonal aiiay
  • Such an array of pixilated electrodes may be used to generate optical add powers by emulating a diffractive, concentric ling electrode structure
  • Pixilated electrodes may also be used to correct for higher- order abe ⁇ ations of the eye in a mannei similar to that used for correcting atmospheric tuibulence effects in ground-based astronomy.
  • Cuirent manufacturing processes limit the minimum pixel size, and as such limit the maximum dynamic electio-active optic diametei.
  • the maximum dynamic elecho- active optic diamete is aie estimated to be 20 mm for + 1 50D, 24 mm foi + 1 25D, and 30 mm for + 1 5OD.
  • Cuiient manufacturing piocesses limit the maximum dynamic electio-active optic diameter when using a pixilated diffiactive approach-
  • embodiments of the invention can possess dynamic electio-active optics with smallei optical poweis at much largei diameters
  • the electto-active optic is comprised of two transparent substrates and a layer of liquid crystal, wheie the fhst substrate is mostly planai and coated with a transparent, conductive layet while the second substrates has a patterned surface that is of a suiface relief diffiactive pattern and is also coated with a tianspended, conductive layei ⁇ suiface ielief diffiactive optic is a physical substrate which has a diffiactive grating etched or created thereon Sutface relief diffract ⁇ ve patterns can be created by way of diamond turning, injection molding, casting, theimofomiing, and stamping Such an optic may be designed to have a fixed optical powei and/ oi abe ⁇ ation collection By applying voltage to the liquid crystal thiough the electrode, the optical power/ abe ⁇ ation correction can be switched on and off by means of refractive index mismatching and matching, respectively When substantially no voltage is applied, the liquid crystal may have substantially the same refi
  • a thickei layei of liquid ciystal (typically > 50 ⁇ m) may also be used to construct the electio-active multifocal optic Foi example, a modal lens may be employed to cieate a refractive optic
  • modal lenses incoipoiate a single, continuous low conductivity c ⁇ iculai electrode su ⁇ ounded by, and in electrical contact with, a single high conductivity ring-shaped elec ⁇ ode
  • the low conductivity electiode essentially a iadially symmetric, electrically resistive network, pioduces a voltage giadient acioss the layei of liquid ciystal, which subsequently induces a lefiactive index giadient in the liquid crystal
  • a dynamic optic is used in combination with a Piogressive Addition Lens to form a combined lens
  • the Piogiessive Addition Lens may be a low add powei Progiessive Addition Lens
  • the Progiessive Addition Lens comprises a piogiessive addition legion
  • the dynamic optic may be located such that it is in optical communication with the piogiessive addition region
  • the dynamic optic is spaced apart from the piogiessive addition region, but is in optical communication theiewifh
  • the progressive addition iegion may have an add powers of one of: +050D, +0.75D, +LOOD, +1 12D, +1 25D, +1 37D, and +1 50D
  • the dynamic optic may have an optical powei of one of: +0.50D, +075D, +1 00D, +1 12D, +1 25D, +1 37D, +1 50D, +1 62D, +1.75D, +2 00D, and - ⁇ 225D in an activated state
  • the add powei of the progressive addition iegion and the optical power of the dynamic optic may be manufactured oi piesciibed to a patient in eithei +0J25D (which is iounded to either + 12D oi +.13D) steps or in +0 25D steps
  • the invention contemplates any and all possible powei combinations, both static and dynamic, needed to correct the wearer's vision propetly at far, intermediate and near viewing distances
  • inventive examples and embodiments piovided within this disclosure aie merely illustrative and are not intended to be limiting in any way Rathei they are intended to show additive optical power relationships when a low add powei piogressive addition region is in optical communication with a dynamic optic.
  • the dynamic optic may have a blend zone such that the optical power along the element's peiipheral edge is blended so as to reduce the visibility of the peripheral edge when the element is activated fn most, but not all cases, the dynamic optic's optical power may transition in the blend zone from a maximum optical power contiiituated by the dynamic optic when activated to an optical power found in the Piogressive Addition Lens
  • the blend zone may be 1 mm - 4 mm in width along the peiipheral edge of the dynamic optic
  • the blend zone may be 1 mm — 2 mm in width along the peripheial edge of the dynamic optic
  • the dynamic optic When the dynamic optic is deactivated, the dynamic optic will provide substantially no optical add power
  • the Progressive Addition Lens may provide all of the add power for the combined lens ⁇ e the total add power of the combined optic is equal to the add powei of the PAL)
  • a dynamic optic includes a blend zone, in the deactivated state the blend zone contributes substantially no optical power and substantially no unwanted astigmatism due to refractive index matching in the deactivated state Tn an embodiment of the invention, when the dynamic optic is deactivated, the total unwanted astigmatism within the combined lens is substantially equal to that contributed by the Progressive Addition Lens
  • the total add powei of the combined optic when the dynamic optic is deactivated, the total add powei of the combined optic may be approximately +1 0OD and the total unwanted astigmatism within the combined lens may be approximately 1 0OD oi less
  • the total add powei of the combined optic when the dynamic optic is deactivated, the total add powei of the combined optic may be approximately +1.25D
  • the dynamic optic When the dynamic optic is activated, the dynamic optic will provide additional optical power Since the dynamic optic is in optical communication with the Progressive Addition Lens, the total add power of the combined optic is equal to the add power of the PAL and the additive optical power of the dynamic optic. If a dynamic optic includes a blend zone, in the activated state the blend zone contributes optical power and unwanted astigmatism due to refiactive index mismatching in the activated state and is largely not usable for vision focus.
  • the unwanted astigmatism of the combined optic is measured only withrn the usable portion of the dynamic optic which does not include the blend zone
  • the total unwanted astigmatism within the combined lens as measured through the usable portion of the lens may be substantially equal to the unwanted astigmatism within the Progressive Addition Lens
  • the total unwanted astigmatism within the usable portion of the combined lens may be 1 0OD or less
  • the total unwanted astigmatism within the usable portion of the combined lens may be 1.25D or less Tn another embodiment of the invention, when the dynamic optic is activated and the total add power of the combined optic is between approximately +3.00D and approximately +3 50
  • the dynamic optic may contribute between approximately 30% and approximately 70% of the total add power required foi a usei's near distance vision prescription
  • the progressive addition region of the low add power PAL may contribute the remaindei of the add powei required for a usei's near distance vision prescription, namely, between approximately 70% and approximately 30%, respectively Tn another embodiment of the invention, the dynamic optic and the progressive addition region may each contribute approximately 50% of the total add power lequhed for a user's near distance vision piesciiption If the dynamic optic contributes too much of the total add power, when the dynamic lens is deactivated the user may not be able to see clearly at an intermediate distance Additionally, when the dynamic optic is activated, the user may have too much optical powei in the intermediate distance viewing zone and as such may not be able to see clearly at an intermediate distance If the dynamic optic contributes too little of the total add power, the combined lens may have too much unwanted astigmatism
  • the horizontal width of the dynamic optic may be approximately 26 mm oi gieatet In anothei embodiment of the i ⁇ ve ⁇ on, the horizontal width of the dynamic optic may be between approximately 24 mm and approximately 40 mm Tn another embodiment of the invention, the horizontal width of the dynamic optic is between approximately 30 mm and approximately 34 mm If the dynamic optic is less than approximately 24 mm in width, it is possible that the blend zone may interfere with a user's vision and create too much distortion and swim for the usei when the dynamic optic is activated Tf the dynamic optic is greatei than approximately 40 mm in width, it may be difficult to edge the combined lens into the shape of an eyeglass fiame.
  • the dynamic optic when the dynamic optic is located with its blend zone at ot below the fitting point of the combined lens, the dynamic optic may have an oval shape with a horizontal width dimension larger than its vertical height dimension When the dynamic optic is located with its blend zone above the fitting point the dynamic optic is usually, but not always, located such that a top petipheial edge of the dynamic optic is a minimum of 8 mm above the fitting point It should be noted that dynamic optics that aie not electio-active may be placed to the peiipheial edge of the combined lens Additionally, such non-electio-active dynamic optics may be less than 24 mm wide
  • the dynamic optic is located at oi above the fitting point
  • a top peiipheial edge of the dynamic optic may be between approximately 0 mm and 15 mm above the fitting point.
  • the dynamic optic is able to piovide, when activated, the needed optical powei when the weaier is looking at an inteimediate distance, a near distance or somewhere between the inteimediate and neai distance (neai-inteimediate distance) This results from the dynamic optic being located at oi above the fitting point This will allow the user to have a conect intermediate distance prescription when looking straight ahead.
  • the optical power continuously increases from the fitting point downwaid through the channel.
  • the user will have a correct near -inter mediate distance and near distance prescription correction when looking through the channel-
  • the usei may, in many circumstances, not need to look downwaid as fai or have to raise theii chin as far to see through the intermediate distance viewing zone of the lens
  • the dynamic optic is spaced vertically from the top of the combined lens, the user may also be able to see at a far distance by utilizing a portion of the combined lens above the activated dynamic optic When the dynamic optic is deactivated, the area of the lens at or near the fitting point will return to the fax distance optical power of the lens
  • the dynamic optic has a blend zone
  • a user may look straight ahead through the fitting point and downward thiough the channel without looking through the blend zone
  • the blend zone may intioduce a high degree of unwanted astigmatism which may be uncomfortable to look thiough
  • the user may make use of the combined optic in the activated state without experiencing a high degree of unwanted astigmatism as the user will not have to pass ovet the edge or blend zone of the dynamic optic
  • the dynamic optic is located below the fitting point
  • a top peripheral edge of the dynamic optic may be between approximately 0 mm and 15 mm below the fitting point
  • a fat distance presciiption correction is provided by the combined optic as the dynamic optic is not in optical communication with this portion of the combined lens.
  • the usei when the usei shifts his ot her gaze fiom the fitting point downward thiough the channel, the usei may expexience a high degree of unwanted astigmatism as the usei 's eyes pass ovei the blend zone of the dynamic optic This may be rectified in a variety of ways which are detailed below
  • the inventive combined ophthalmic lens comprises an optical design that takes into consideration:
  • the design of the progressive addition region in terms of whether it is, by way of example only, a soft PAL design, a hard PAL design, a modified soft PAL design or a modified hard PAL design;
  • Figure IA shows an embodiment of a Progressive Addition Lens 100 having a fitting point 110 and a progressive addition region 120
  • the Progressive Addition Lens in Figure IA is a low add power Progressive Addition Lens designed to provide a wearer with a desired optical power less than the wearer's needed near distance optical powei co ⁇ ection
  • the add powei of the PAL may be 50% of the near distance optical power coi ⁇ ection.
  • the distance along axis line AA of the lens from the fitting point to the point on the lens where the optical power is within 85% of the desiied add optical power is known as the channel length
  • the channel length is designated in Figure IA as distance D
  • the value of distance D may be vaiied depending upon many factois, such as the style of frame the lens will be edged to fit, how much optical powei is required, and how wide a channel width is required.
  • the distance D is between approximately 11 mm and approximately 20 mm
  • Tn another embodiment of the invention the distance D is between appioxirnately 14 mm and approximately 18 mm
  • Figure IB shows a graph of optical power 130 taken along a cross section of the lens of Figuie IA, along axis line ⁇ A.
  • the x-axis of the giaph represents distance along axis line AA in the lens
  • the y-axis of the giaph repiesents the amount of optical power, within the lens.
  • the optical powei shown in the graph begins at the fitting point
  • the optical powei before oi at the fitting point may be appioximately +00OD to approximately +0 12D (;' e , approximately no optical powei) or may have a positive oi negative dioptric power depending on the fai distance prescriptive needs of a user
  • Figuie IB shows the lens as having no optical powei befoie or at the fitting point After the fitting point, the optical power continuously increases to a maximum power
  • the maximum powei may persist for some length of the lens along axis line AA
  • Figure IB shows the maximum powei persisting, which appears as a plateau of optical power
  • Figure IB also shows that the distance D occurs before the maximum power Aftei the maximum power plateau, the optical power may then continuously decrease until a desiied optical power.
  • the desired optical power may be any power less than the maximum powei and may be equal to the optical power at the fitting point
  • Figuie IB
  • the progressive addition region may be a progressive addition surface located on the front surface of the lens and the dynamic optic may be buried inside the lens
  • the progressive addition region may be a progiessive addition suiface located on the back surface of the lens and the dynamic optic may be buried inside the lens
  • the progressive addition region may be two piogiessive addition surfaces with one surface located on the fiont surface of the tens and the second surface located on the back suiface of the lens (as that of a dual suiface Progressive Addition Lens) and the dynamic optic may be buried inside the lens
  • the progressive addition region may not be produced by a geometric suiface, but instead may be produced by a refractive index gradient Such an embodiment would allow both surfaces of the lens to be similar to surfaces used on single focus lenses Such a refractive index gradient providing a piogtessive addition region may be located inside the lens or on a suiface
  • the only contiol mechanism that may be lequiied is a means foi selectively activating the dynamic optic when a pioper neai distance optical powei is needed foi the wearei .
  • This effect is piovided by the low add powei PAL having an add powei that piovides less optical powei at a neai distance than a user's presciiptive neat distance needs, and further that this lowei add power approximates the collect prescriptive optical power for the wearer's intermediate distance viewing needs.
  • the dynamic optic is activated, the weaier 's near distance optical power focusing needs will be satisfied
  • all that may be required is a sensing device that can detect if a user is focusing beyond an intermediate distance If the user is focusing closer than a far distance, the dynamic optic may be activated- If the user is not focusing closer than a far distance, the dynamic optic may be deactivated
  • a sensing device may be a simple tilt switch, a manual switch, or a range finder
  • a small amount of temporal delay may be placed in the control system so that the patient's eye passes past the point of the peripheral edge of the dynamic optic before the dynamic optic is activated This allows the wearer to avoid any unpleasant unwanted distortion effects mat might be caused by looking through the peripheral edge of the dynamic optic
  • the dynamic optic includes a blend zone
  • the wearer's eye will translate over the peripheral edge of the dynamic optic into the near distance viewing zone
  • the dynamic optic will not be activated until the wearer's line of sight has already transitioned past the peripheial edge of the dynamic optic and into the near distance viewing zone This occurs by delaying the time to activate the dynamic optic in order to allow the line of sight of the weaier to pass over the peiipheial edge If the activation of the dynamic optic was not temporally delayed and was instead activated before the we
  • the dynamic optic's peiipheial edge may be located above the fitting point of the combined lens and thus, in most cases, the delay may not be needed as the line of sight of the weatei nevei passes ovei the peripheial edge of the dynamic optic when looking between an intermediate distance and a neat distance
  • the Piogiessive Addition Lens and the blend zone of the dynamic optic may be designed such that in the area wheie the two oveilap the unwanted astigmatism in the blend zone at least partially cancels out some of the unwanted astigmatism in the PAL
  • This effect is comparable to a dual-sided PAL in which one suiface's unwanted astigmatism is designed to cancel out some of the other surface's unwanted astigmatism
  • the diameter of the laiger dynamic optic is between approximately 24 mm and approximately 40 mm
  • the vertical displacement of the dynamic optic relative to the fitting point of the lens is designated by the distance d
  • distance d is in a range of approximately 0 mm to a distance equal to appioximately one half the diameter of the dynamic optic
  • the distance d rs a distance between appioximately one eighth the diameter of the dynamic optic and thtee eighths the diameter of the dynamic optic
  • Figure 2B shows an embodiment having a combined optical powei 230 that is created
  • the aiea of the lens above and neai the fitting point allows for distance vision viewing co ⁇ ection with a weak piogiessive power below the fitting point
  • Figuies 3A - 3C illustrate an embodiment of the invention, in which the dynamic optic 320 is placed within the lens 300, and the progressive addition region 310 is placed on the back surface of the lens This back progressive addition surface can be placed on the lens during the processing of a semi-finished lens blank having an integrated dynamic optic by means of a fabrication appioach known as free foiming
  • the piogiessive addition region is located on the front surface of the semi-finished lens blank
  • the semi-finished lens blank incotpoiates the dynamic optic such that the dynamic optic is in proper alignment with the piogiessive addition surface cuivatuie
  • the semi-finished lens blank is then processed by conventional sui facing, polishing, edging, and mounting into an eyeglass frame
  • Figuie 3A when the dynamic optic is deactivated, the optical powei taken along a line of sight fiorn a wearei 's eye 340 through the fitting point provides the wearei with coirect far distance vision 330
  • Figuie 3B when the dynamic optic is activated, the optical power taken along a line of sight Som the weaier's eye through the fitting point provides the wearer with a co ⁇ ect intermediate distance focusing power 331.
  • the combined optics of the dynamic optic and the piogiessive addition surface piovides a mostly continuous power tiansition fiom i ⁇ tetmediate distance focus to near distance focus
  • the optical power taken along a line of sight fiom the wcaie:'s eye through the neai distance viewing zone provides the wearei with a coirect neai distance focusing power 332.
  • One major advantage of this embodiment of the invention may be that the control system only needs to decide if the wearei is looking to a fat distance Jn such a case of distance viewing the dynamic optic may iemaln in the deactivated state Tn embodiments where a range finding device is used, the ranging system only needs to decide if an object is closei to ihe eye than one's intermediate distance In such a case the dynamic optic would be activated to piovide a combined optical powei allowing foi simultaneous inteimediate distance and near distance optical powei coirection
  • Another majoi advantage of this embodiment of the invention is that the eye does not have to pass ovei oi cioss the upper edge of the dynamic optic when it is turned on such as when a user looks fiom a far distance portion of the Jens to a neai distance portion of the lens and vice versa.
  • embodiments of the invention may allow the positioning of the dynamic optic below the fitting point such that the eye does not pass ovet the upper most edge of the dynamic optic Such embodiments may allow for othei advantages with regard to visual performance and eigonomics.
  • Figures 3A — 3C illustrate the ptogiessive addition surface region on the back suiface, it may also be placed on the front surface of the lens oi located on both the front and back sutfaces of the lens while the dynamic optic may be located within the lens Additionally, while the dynamic optic is illustrated as located inside the lens, it may also be placed on the surface of the lens if it were made from curved substrates and covered by an ophthalmic covering material
  • a +0 75D dynamic optic could be combined with a +0.50D, +0.75D oi +1 0OD ptogiessive addition iegion or surface, to produce add powers of +1 25D, +1 50D oi +1 75D tesp ⁇ ctively
  • a +1 0OD dynamic optic could be combined with
  • Figure 4A illustrates another embodiment of the invention whereby a low add power Piogressive Addition Lens 400 is combined with a dynamic optic 420 that is larger than the progressive addition iegion and/ or channel 430
  • the unwanted distortion 450 fiom the blend zone of the dynamic optic is well outside both the fitting point 410 and the progressive addition channel 430 and reading zones 440
  • Figures 4B — 4D show graphs of optical power taken along a cross section of the lens of Figuie 4A, along axis line AA
  • the optical powei befoie oi at the Fitting point may be approximately +0 0OD to approximately +0 12D (/ e , approximately no optical power) or may have a positive or negative dioptjic powei depending on the fat distance presciiptive
  • Figure 4B shows the lens as having no optical powei befoie or at the fitting point.
  • Figure 4B shows the optical power 460 that is provided by the fixed progressive addition surface or region taken along axis line AA of Figure 4A
  • Figure 4C shows the optical power 470 that is provided by the dynamic optic when activated taken along axis line AA of Figure 4A
  • Figure 4D shows the combined poweis of the dynamic electro-active optic and the fixed progressive addition region taken along axis line AA of Figure 4A From the figure it is clear that the top and bottom distorted blend area 450 of the dynamic electro-active optic are outside both the fitting point 41 € and the progressive addition leading area 440 and channel 430
  • Figures 5A and 5B are illustrative of embodiments in which a dynamic optic 520 is located below a fitting point 510 of a low add power Progiessive Addition Lens 500
  • the location of the blend zone of the dynamic electro-active optic iesults in significant overall distortion 550 as the weater's eye tracks down the progressive corridoi 530.
  • this is solved by delaying the activation of the dynamic optic until the wearer's eye has passed over the upper edge of the blend zone of the dynamic optic.
  • Figure SB shows optical powei along axis line AA of Figuie 5A
  • the legion of distortion 550 is seen to overlap with the add power of the lens just below the fitting point and further shows the need to delay the activation of the dynamic optic until the eye passes over this atea Once the eye passes over this area and enters, for example, the reading zone 540 there is no longer significant optical distortion
  • a very narrow blend zone of lmm - 2 mm may be provided to allow for the eye to quickly pass over this area.
  • a horizontal width of the dynamic optic may be between approximately 24 mm and approximately 40 mm In another embodiment of the invention, a horizontal width of the dynamic optic may be between approximately 30 mm and approximately 34 mm Tn another embodiment of the invention, a horizontal width of the dynamic optic may be approximately 32mm.
  • the dynamic optic is shaped more like an oval with the hoiizontal measurement being wider than the vertical measuiement
  • Figures 6 A - 6C show embodiments of a dynamic optic
  • the dynamic optic has an oval shape and is between appioximately 26 mm and approximately 32 mm wide
  • Various heights of the dynamic optic are shown
  • Figuie 6A shows a dynamic optic with a height of appioximately 14 mm.
  • Figure 6B shows a dynamic optic with a height of approximately 19 mm
  • Figure 6C shows a dynamic optic with a height of approximately 24 mm
  • F igures 7A - 7K show unwanted astigmatic contain maps comparing an existing state-of-the-art Progressive Addition Lens and embodiments of the invention which include a low add power Progressive Addition Lens and a dynamic optic
  • the unwanted astigmatic powei maps were measured and generated by a Visionix State of the Ait PowerMapVM 2000TM "High Precision Lens Analyzer" which is the same equipment used by lens manufacturers when fabricating or designing PALs to measuie and inspect theii own PALs for both quality control and marketing specification purposes
  • Embodiments of the invention are simulated using the low add power PAL and a spherical lens
  • the sphetical lens has an optical powei equal to that of an activated dynamic optic of a given optical power which extends to the periphery of the lens
  • Figure 7A compares an Essilor Varilux Physio tM +1 25D PAL and an inventive embodiment including an Essiloi Vaiilux PhysioTM +1 0OD PAL and a +025D dynamic optic to create a total add power of +1 25D
  • Figure 7B compares an Essilor Varilux PhysioTM +1 5OD PAL and an inventive embodiment including an Essilor Vaiilux PhysioTM +075D PAL and a +075D dynamic optic to create a total add power of +1 50D
  • Figure 7C compares an Essilor Varilux PhysioTM +1 75D PAt and an inventive embodiment including an Essilot Varilux PhysioTM +1 0OD PAL and a +0 75D dynamic optic to create a total add power of +1 75D
  • Figure 7D compares an Essilor Vaiilux Physio 1M +2 0OD PAL and an inventive embodiment including an Essilor Varilux PhysioTM +1 0OD PAL and a +1 0OD dynamic
  • Figure 7E compares an Essilor Varilux PhysioTM +2.00D PAL and an inventive embodiment including an Essilor Vaiilux Physio 1M +0 75D PAL and a +1 25D dynamic optic to cieate a total add power of +2 00D- Figuie 7F compares an Essilor Varilux PhysioTM +2 25D PAL and an inventive embodiment including an Essilor Varilux Physio I M +1 0OD PAL and a +1 25D dynamic optic to create a total add power of +2 25D.
  • Figure 7G compates an Essilor Varilux PhysioTM +2 25D PAL and an inventive embodiment including an Essilor Varilux PhysioTM +0 75D PAL and a +1 5OD dynamic optic to cieate a total add powei of +2 25D
  • Figure 7H compares an Essilor Varilux PhysioTM +2 50D PAL and an inventive embodiment including an Essilor Varilux PhysioTM +1 25D PAI and a +1 25D dynamic optic to create a total add power of +2 50D
  • Figuie 71 compares an Essilor Vaiilux PhysioTM +2 5OD PAL and an inventive embodiment including an Essilor Varilux PhysioTM +1.00D PAL and a +L50D dynamic optic to create a total add powei of +2 5OD
  • Figure 7J compares an Essiloi Varilux PhysioTM +2 75D PAL and an inventive embodiment including an Ess ⁇ lor Vaiilux PhysioTM +1 25D PAL and a +1 SOD dynamic optic to
  • Figuies 7A - 7K clearly show the iemarkable impiovement the inventive approach makes over the current state-of-the art Progressive Addition Lenses
  • the inventive embodiments shown in Figuies 7A - 7K have significantly less distortion, significantly less unwanted astigmatism, a much widei channel width, and slightly shorter channel length foi both lowei add powers and higher add powers when compared to the current state-of-the-ait PAL lenses
  • the inventive approach is able to provide these rematkable imptovements while allowing a user to see cleaily at a fai distance, an inteimediate distance, and a neai distance as with a conventional PAL lens.
  • the dynamic optic may need to be off-centei vertically and in some cases horizontally relative to the progressive addition region depending upon the wearer's pupillaiy distance, fitting point, and dimensions of the frame eye-wire cut out Howevei, in all cases when the dynamic optic is off-center relative to the progressive addition region it remains in optical communication with the region when the dynamic optic is activated It should be noted that the vertical dimension of the frame's eye- wire oi rim will in many, but not all cases, determine this amount of off-centeredness
  • the inventive ophthalmic lens allows foi an optical transmission of 88% or more If an antiieflection coating is utilized on both surfaces of the ophthalmic lens the optical transmission will be in excess of 90%
  • the optical efficiency of the inventive ophthalmic lens is 90% or better
  • the inventive ophthalmic lens is capable of being coated with a variety of well- known lens treatments such as, by way of example only, an antireflection coating, a sciatch resistant coating, a cushion coating, a hydrophobic coating, and an ultia-violet coating
  • the ultra-violet coating may be applied to the ophthalmic lens oi to the dynamic optic
  • the ultraviolet coating may protect the liquid crystal from ultia-violet light that could damage the liquid crystal over time
  • Ihe inventive ophthalmic lens is also capable of being edged into the shape needed for an eyeglass fiame, or dulled in its pei ipheiy so as to be mounted,

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eyeglasses (AREA)
  • Liquid Crystal (AREA)

Abstract

Verre ophtalmique comportant une région d'addition progressive et un élément optique dynamique. L'élément optique dynamique et la région d'addition progressive sont en communication optique. La région d'addition progressive possède une puissance additionnelle inférieure à la puissance additionnelle de distance de vision nette d'un utilisateur. Une fois activé, l'élément optique dynamique fournit la puissance optique supplémentaire nécessaire permettant à l'utilisateur de distinguer clairement de près. Cette association produit un résultat surprenant dans la mesure où elle permet à l'utilisateur de distinguer clairement de près et à des distances moyennes, mais aussi de réduire sensiblement les niveaux indésirables d'astigmatisme, de distorsion et de compromis visuel.
PCT/US2007/013743 2006-06-12 2007-06-12 Région à surface progressive statique en communication optique avec un élément optique dynamique Ceased WO2007146265A2 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
MX2008015905A MX2008015905A (es) 2006-06-12 2007-06-12 Region superficial, progresiva, estatica en comunicacion optica con una optica dinamica.
HK10100667.0A HK1137056B (en) 2006-06-12 2007-06-12 Static progressive surface region in optical communication with a dynamic optic
BRPI0713008-2A BRPI0713008A2 (pt) 2006-06-12 2007-06-12 região de superfìcie progressiva de estática em uma comunicação óptica com um ótico dinámico
KR1020097000557A KR101454672B1 (ko) 2006-06-12 2007-06-12 역동적 옵틱과 광학적 커뮤니케이션하는 정적 누진 표면 영역
AU2007258383A AU2007258383B2 (en) 2006-06-12 2007-06-12 Static progressive surface region in optical communication with a dynamic optic
EP07795996A EP2030074A4 (fr) 2006-06-12 2007-06-12 Région à surface progressive statique en communication optique avec un élément optique dynamique
CN2007800300606A CN101501552B (zh) 2006-06-12 2007-06-12 与动态光学器件光连通中的静态渐进表面区域
CA2655349A CA2655349C (fr) 2006-06-12 2007-06-12 Region a surface progressive statique en communication optique avec un element optique dynamique
JP2009515447A JP2009540386A (ja) 2006-06-12 2007-06-12 動的光学素子と光学結合する静的プログレッシブ面領域
IL195879A IL195879A0 (en) 2006-06-12 2008-12-11 Static progressive surface region in optical communication with a dynamic optic

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US81262506P 2006-06-12 2006-06-12
US60/812,625 2006-06-12
US81295206P 2006-06-13 2006-06-13
US60/812,952 2006-06-13
US85470706P 2006-10-27 2006-10-27
US60/854,707 2006-10-27
US87646406P 2006-12-22 2006-12-22
US60/876,464 2006-12-22

Publications (2)

Publication Number Publication Date
WO2007146265A2 true WO2007146265A2 (fr) 2007-12-21
WO2007146265A3 WO2007146265A3 (fr) 2008-02-28

Family

ID=38832479

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/013743 Ceased WO2007146265A2 (fr) 2006-06-12 2007-06-12 Région à surface progressive statique en communication optique avec un élément optique dynamique

Country Status (12)

Country Link
EP (1) EP2030074A4 (fr)
JP (1) JP2009540386A (fr)
KR (1) KR101454672B1 (fr)
CN (1) CN101501552B (fr)
AR (1) AR061449A1 (fr)
AU (1) AU2007258383B2 (fr)
BR (1) BRPI0713008A2 (fr)
CA (1) CA2655349C (fr)
IL (1) IL195879A0 (fr)
MX (1) MX2008015905A (fr)
TW (2) TWI494637B (fr)
WO (1) WO2007146265A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011149975A1 (fr) * 2010-05-24 2011-12-01 PixelOptics Réduction de saut d'image
EP2431790A1 (fr) * 2008-04-11 2012-03-21 Pixeloptics Inc. Lentille diffractive électro-active et son procédé de fabrication
US20120212696A1 (en) * 2011-01-27 2012-08-23 Pixeloptics, Inc. Variable optical element comprising a liquid crystal alignment layer
EP2642332A1 (fr) * 2012-03-23 2013-09-25 Essilor International (Compagnie Générale D'Optique) Lentille d'addition progressive destinée à un porteur
US8851677B2 (en) 2010-12-20 2014-10-07 Carl Zeiss Vision Gmbh Arrangement with a spectacle lens having a changeable effect and method for setting the effect of a spectacle lens
US9588396B2 (en) 2012-02-07 2017-03-07 Mitsui Chemicals, Inc. Laser patterning of conductive films for electro-active lenses
US11963868B2 (en) 2020-06-01 2024-04-23 Ast Products, Inc. Double-sided aspheric diffractive multifocal lens, manufacture, and uses thereof

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012001891A1 (fr) 2010-06-30 2012-01-05 パナソニック株式会社 Dispositif optique
KR101385347B1 (ko) 2010-06-30 2014-04-14 파나소닉 주식회사 광디바이스
JP2012103312A (ja) * 2010-11-08 2012-05-31 Seiko Epson Corp 累進屈折力レンズ及びその設計方法
EP3108295A1 (fr) * 2014-02-18 2016-12-28 Essilor International (Compagnie Générale D'Optique) Procédé d'optimisation d'équipement de lentille optique pour un porteur
DE102015219482B4 (de) * 2015-10-08 2017-07-13 Carl Zeiss Vision International Gmbh Brille mit einem Brillenglas mit einem beweglichen Linsensegment
JPWO2018061902A1 (ja) * 2016-09-29 2019-02-21 三井化学株式会社 レンズ、レンズブランク及びアイウェア
WO2021158805A1 (fr) * 2020-02-06 2021-08-12 Valve Corporation Correction optique variable à l'aide de polariseurs à variation spatiale
WO2022138060A1 (fr) * 2020-12-25 2022-06-30 株式会社ニコン・エシロール Verre de lunettes, procédé de conception de verre de lunettes, procédé de fabrication de verre de lunettes et dispositif de conception de verre de lunettes
TWI813083B (zh) * 2021-12-01 2023-08-21 長庚醫療財團法人基隆長庚紀念醫院 加強近視控制效果的方法、鏡片與其製備方法
CN119540151B (zh) * 2024-10-28 2025-08-29 无锡鑫巨宏智能科技股份有限公司 一种塑胶光学透镜表面缺陷的检测方法和系统

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146791B (en) * 1983-09-16 1987-01-28 Suwa Seikosha Kk Progressive multifocal ophthalmic lens
JPS6338915A (ja) * 1986-08-05 1988-02-19 Canon Inc 自動焦点眼鏡
US5124734A (en) * 1987-07-14 1992-06-23 Daniel Barnea Opthalmic lens
JP2665341B2 (ja) * 1988-01-11 1997-10-22 オリンパス光学工業株式会社 液晶レンズ
JP2998233B2 (ja) * 1991-02-28 2000-01-11 トヨタ自動車株式会社 可変焦点眼鏡
US5644374A (en) * 1992-02-03 1997-07-01 Seiko Epson Corporation Variable focus type eyesight correcting apparatus
US5359444A (en) * 1992-12-24 1994-10-25 Motorola, Inc. Auto-focusing optical apparatus
JP3196877B2 (ja) * 1995-04-18 2001-08-06 ホーヤ株式会社 累進多焦点レンズ
US5774274A (en) * 1995-05-12 1998-06-30 Schachar; Ronald A. Variable focus lens by small changes of the equatorial lens diameter
US6540354B2 (en) * 1997-10-16 2003-04-01 Essilor International Multifocal ophthalmic lens
US6871951B2 (en) * 2000-06-23 2005-03-29 E-Vision, Llc Electro-optic lens with integrated components
US6619799B1 (en) * 1999-07-02 2003-09-16 E-Vision, Llc Optical lens system with electro-active lens having alterably different focal lengths
FR2807169B1 (fr) * 2000-03-31 2002-06-07 Essilor Int Procede de montage de lentilles ophtalmiques
US7019890B2 (en) * 2001-10-05 2006-03-28 E-Vision, Llc Hybrid electro-active lens
CN1653374A (zh) * 2002-03-13 2005-08-10 E-视觉有限公司 具有集成组件的电－光透镜
KR20050025624A (ko) * 2002-08-09 2005-03-14 이-비젼 엘엘씨 전기-활성 콘택트 렌즈 시스템
ES2534221T3 (es) * 2003-08-15 2015-04-20 E-Vision Llc Sistema mejorado de lente electro-activa
US7090348B2 (en) * 2003-10-28 2006-08-15 Essilor International (Compagnie Generale D'optique) Method for designing spectacle lenses taking into account an individual's head and eye movement
JP2007531912A (ja) * 2004-03-31 2007-11-08 ザ・リージェンツ・オブ・ザ・ユニバーシティー・オブ・カリフォルニア 流体適応レンズ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of EP2030074A4 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2431790A1 (fr) * 2008-04-11 2012-03-21 Pixeloptics Inc. Lentille diffractive électro-active et son procédé de fabrication
EP2269113A4 (fr) * 2008-04-11 2012-03-21 Pixeloptics Inc Lentille diffractrice électro-active et procédé de fabrication de celle-ci
US8523354B2 (en) 2008-04-11 2013-09-03 Pixeloptics Inc. Electro-active diffractive lens and method for making the same
US8830408B2 (en) 2008-04-11 2014-09-09 Hpo Assets Llc Electro-active diffractive lens and method for making the same
WO2011149975A1 (fr) * 2010-05-24 2011-12-01 PixelOptics Réduction de saut d'image
US8851677B2 (en) 2010-12-20 2014-10-07 Carl Zeiss Vision Gmbh Arrangement with a spectacle lens having a changeable effect and method for setting the effect of a spectacle lens
US20120212696A1 (en) * 2011-01-27 2012-08-23 Pixeloptics, Inc. Variable optical element comprising a liquid crystal alignment layer
US9588396B2 (en) 2012-02-07 2017-03-07 Mitsui Chemicals, Inc. Laser patterning of conductive films for electro-active lenses
EP2642332A1 (fr) * 2012-03-23 2013-09-25 Essilor International (Compagnie Générale D'Optique) Lentille d'addition progressive destinée à un porteur
US11963868B2 (en) 2020-06-01 2024-04-23 Ast Products, Inc. Double-sided aspheric diffractive multifocal lens, manufacture, and uses thereof

Also Published As

Publication number Publication date
AU2007258383B2 (en) 2014-02-27
EP2030074A4 (fr) 2011-07-06
MX2008015905A (es) 2009-04-01
WO2007146265A3 (fr) 2008-02-28
JP2009540386A (ja) 2009-11-19
AR061449A1 (es) 2008-08-27
EP2030074A2 (fr) 2009-03-04
KR101454672B1 (ko) 2014-10-27
KR20090012370A (ko) 2009-02-03
CN101501552B (zh) 2010-12-01
TW201418822A (zh) 2014-05-16
TW200807055A (en) 2008-02-01
CA2655349C (fr) 2016-01-05
CN101501552A (zh) 2009-08-05
CA2655349A1 (fr) 2007-12-21
BRPI0713008A2 (pt) 2012-10-09
IL195879A0 (en) 2009-09-01
AU2007258383A1 (en) 2007-12-21
TWI435139B (zh) 2014-04-21
HK1137056A1 (en) 2010-07-16
TWI494637B (zh) 2015-08-01

Similar Documents

Publication Publication Date Title
US7604349B2 (en) Static progressive surface region in optical communication with a dynamic optic
WO2007146265A2 (fr) Région à surface progressive statique en communication optique avec un élément optique dynamique
US8641191B2 (en) Static progressive surface region in optical communication with a dynamic optic
US20160070117A1 (en) Electro-active ophthalmic lenses comprising low viscosity liquid crystalline mixtures
US8434865B2 (en) Multifocal lens having a progressive optical power region and a discontinuity
US9268153B2 (en) Dynamic ophthalmic lens capable of correcting night and day vision
US20140204333A1 (en) Adjustable electro-active optical system and uses thereof
US20110285959A1 (en) Reduction of image jump
CA2680870C (fr) Lentille multifocale ayant une region de puissance optique progressive et une discontinuite
FR2536180A1 (fr) Lentille ophtalmique a puissance focale progressivement variable, determinee en tenant compte de la convergence
JP2002323680A (ja) 可変屈折制御型眼鏡
HK1137056B (en) Static progressive surface region in optical communication with a dynamic optic

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780030060.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07795996

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 195879

Country of ref document: IL

Ref document number: MX/A/2008/015905

Country of ref document: MX

ENP Entry into the national phase

Ref document number: 2655349

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2009515447

Country of ref document: JP

Ref document number: 2007795996

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 10506/DELNP/2008

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2007258383

Country of ref document: AU

NENP Non-entry into the national phase

Ref country code: RU

WWE Wipo information: entry into national phase

Ref document number: 1020097000557

Country of ref document: KR

ENP Entry into the national phase

Ref document number: 2007258383

Country of ref document: AU

Date of ref document: 20070612

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: PI0713008

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20081212