Class / Patent application number | Description | Number of patent applications / Date published |
351169000 | Gradually varying focal power | 73 |
20080198325 | Ophthalmic Lens Comprising a Layer Having a Variable Refractive Index - An ophthalmic lens ( | 08-21-2008 |
20080218689 | MULTIFOCAL LENS HAVING A PROGRESSIVE OPTICAL POWER REGION AND A DISCONTINUITY - Embodiments of the present invention relate to a multifocal lens having a mostly spherical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens. | 09-11-2008 |
20080246914 | Ophthalmic Lens - The invention concerns an ophthalmic lens having a complex surface, with a substantially umbilic meridian and an average sphere progression ranging between 0.50 diopter and 0.75 diopter. The lens is prescribed for esophoric and non-presbyopic users. The lens is prescribed as a standard unifocal lens. Through the presence of the average sphere progression, the user is less adapted to near vision, thus compensating for his/her esophoria. | 10-09-2008 |
20080273169 | Multifocal Lens Having a Progressive Optical Power Region and a Discontinuity - Embodiments of the present invention relate to a multifocal lens having a diffractive optical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens. | 11-06-2008 |
20080278681 | PROGRESSIVE ADDITION LENS OPERATING IN COMBINATION WITH A MULTI-ORDER DIFFRACTIVE OPTIC - A multi-focal spectacle lens is presented having far distance, intermediate distance, and near distance vision correction, in which the lens includes a progressive addition surface with a progression of optical power. The lens further includes a multi-order diffractive surface relief structure with an optical add power. The multi-order diffractive structure reduces chromatic aberration as compared to a conventional diffractive structure of equivalent optical power. The lens may also include a wavefront splitting device diffractive structure for generating multiple optical powers simultaneously. When the progressive addition surface and the multi-order diffractive surface relief structure are in optical communication an overall progression of optical add power may be provided by the combination of the progressive addition surface with the multi-order surface relief diffractive structure. | 11-13-2008 |
20080284977 | Progressive Multi-Focal Lens - A kind of wide visual field mediate to near distances progressive multi-focal lens, it belongs to spectacle or same spectacle's characteristic protective lens, which consists of near and intermediate visual areas, the described lens has progressive surfaces which designed gradually step by step with different diopters in the mediate intermediate and near visual areas. | 11-20-2008 |
20080284978 | SPECTACLE LENS DESIGN METHOD - A spectacle lens design method for designing a spectacle lens attached to a spectacle frame having a bend angle of 200 degrees or larger includes: setting a distance portion, a near portion having power different from power of the distance portion, and a progressive portion which is disposed between the distance portion and the near portion and has power progressively varying on at least either an object side refractive surface or an eyeball side refractive surface included in the spectacle lens; adding astigmatic power for canceling aberration produced by the bend angle of the spectacle frame at a design reference point of the distance portion to the entire distance portion and astigmatic power for canceling aberration produced by the bend angle of the spectacle frame at a design reference point of the near portion to the entire near portion on either the object side refractive surface or the eyeball side refractive surface of the spectacle lens; determining an aspherical surface addition quantity which provides the optimum optical properties throughout the object side refractive surface or the eyeball side refractive surface of the spectacle lens; and adding prismatic power for canceling prismatic power produced by the bend angle of the spectacle frame at the design reference point of the distance portion to the entire distance portion and prismatic power for canceling prismatic produced by the bend angle of the spectacle frame at the design reference point of the near portion to the entire near portion on either the object side refractive surface or the eyeball side refractive surface of the spectacle lens. | 11-20-2008 |
20080316425 | SYSTEM, APPARATUS, AND METHOD FOR CORRECTING VISION USING AN ELECTRO-ACTIVE LENS - A spectacle lens is disclosed. The disclosed lens provides a vision correcting area for the correction of a wearer's refractive error. The viewing correction area provides correction for non-conventional refractive error to provide at least a part of the wearer's vision correction. The lens has a prescription based on a wave front analysis of the wearer's eye and the lens can further be modified to fit within an eyeglass frame. | 12-25-2008 |
20090051870 | Presbyopic treatment system - A method and system for treating Presbyopia and pre-Presbyopia are provided that do not compromise the wearer's intermediate or distance vision. The system is a lens and a lens series, wherein the power profiles of the lenses are tailored to provide an amount of positive ADD power in the near vision zone that is slightly less than that which is normally required for near vision accommodation, while also providing an amount of negative spherical aberration in the peripheral optical zone. The dynamic ocular factors of the wearer's eye work in conjunction with the positive ADD power provided by the central optical zone and with the effective ADD gained from the negative spherical aberration provided by the peripheral optical zone to induce a minimally discernible amount of blur that is tuned to maximize the wearer's depth of focus. | 02-26-2009 |
20090066912 | Progressive Power Lens and Manufacturing Method Therefor - A progressive power lens in which distortion aberration is restricted and a manufacturing method therefore are provided. | 03-12-2009 |
20090109396 | Method for Designing Group of Bi-Aspherical Type Progressive-Power Lenses, and Group of Bi-Aspherical Type Progressive-Power Lenses - There is provided a group of bi-aspherical type progressive-power lenses for which the processing costs are reduced. In a bi-aspherical type progressive-power lens(es), the relationships DHf+DHnADD/ | 04-30-2009 |
20090153794 | REFRACTIVE-DIFFRACTIVE MULTIFOCAL LENS - Aspects of the present invention provide multifocal lenses having one or more multifocal inserts comprising one or more diffractive regions. A diffractive region of a multifocal insert of the present invention can provide a constant optical power or can provide a progression of optical power, or any combination thereof. A multifocal insert of the present invention can be fabricated from any type of material and can be inserted into any type of bulk lens material. A diffractive region of a multifocal insert of the present invention can be positioned to be in optical communication with one or more optical regions of a host lens to provide a combined desired optical power in one or more vision zones. Index matching layers of the present invention can be used to reduce reflection losses at interfaces of the host lens and multifocal insert. | 06-18-2009 |
20090153795 | MULTIPLE LAYER MULTIFOCAL COMPOSITE LENS - Aspects of the present invention provide multiple-layer (multi-layer) composite lenses comprising two or more materials and methods for making the same. A multi-layer composite lens of the present invention can use multiple surfaces (internal or external) to form optical elements that can contribute to a total desired add power. The multiple contributing optical elements can be aligned so as to be in optical communication to form multiple stable vision zones to enhance optical performance and the vision experience of the wearer. Distributing the total desired add power across multiple appropriately aligned optical elements that are in optical communication with one another can reduce the total distortion of the lens, minimize the number of optical discontinuities introduced, can reduce optical power jump as experienced by the wearer's eye when traversing any discontinuity, and can reduce the visibility of any introduced optical discontinuity as perceived by an observer looking at the wearer. | 06-18-2009 |
20090161066 | MULTIPLE LAYER MULTIFOCAL COMPOSITE LENS - Aspects of the present invention provide multiple-layer composite lenses comprising two or more materials and methods for making the same. A multi-layer composite lens of the present invention can use multiple surfaces to form optical elements that can contribute to a total desired add power. The multiple contributing elements can be aligned so as to be in optical communication to form multiple stable vision zones to enhance optical performance and vision experience of the wearer. Distributing the total desired add power across multiple appropriately aligned optical elements that are in optical communication with one another can reduce the total distortion of the lens, minimize the number of optical discontinuities introduced and reduce the visibility of any introduced optical discontinuity. A surface of the multiple-layer composite lens can comprise a combined progressive structure and substantially constant optical power structure or a cropped progressive structure. | 06-25-2009 |
20090195749 | ELECTRO-OPTIC LENS WITH INTEGRATED COMPONENTS FOR VARYING REFRACTIVE PROPERTIES - A lens for dynamically correcting refractive error is disclosed, the lens system comprising: a lens having at least one electro-active element having a refractive property that is alterable, the lens being capable of being shaped to fit a housing without hindering performance of the electro-active element, a controller in communication with each of the at least one electro-active element thereto, and an input generator adapted for generating an input signal and transmitting the input signal to the controller, the input signal being generated based at least in part on an input parameter. | 08-06-2009 |
20090213325 | Step zone progressive lens - The present invention provides a progressive lens comprising at least one area with gradually increasing optical power, the area having a first region where the gradient of the optical power decreases towards a second region with reduced gradient of optical power, and a third region following the second region where the gradient of the optical power increases. The present invention further provides a method for producing progressive lens, the method comprising computing location on the lens on which a second region with reduced gradient of optical power should be produced and a required optical power in the second region; producing based on the computations an area on the lens with gradually increasing optical power, the area having a first region where the gradient of the optical power decreases towards the second region, and a third region following the second region where the gradient of the optical power increases. | 08-27-2009 |
20090231541 | EYEGLASS MANUFACTURING METHOD USING VARIABLE INDEX LAYER - An eyeglass lens and manufacturing method using epoxy aberrator includes two lenses with a variable index material, such as epoxy, sandwiched in between. The epoxy is then cured to different indexes of refraction that provide precise corrections for the patient's wavefront aberrations. The present invention further provides a method to produce an eyeglass that corrects higher order aberrations, such as those that occur when retinal tissue is damaged due to glaucoma or macular degeneration. The manufacturing method allows for many different applications including, but not limited to, supervision and transition lenses. | 09-17-2009 |
20090244480 | METHOD FOR DETERMINING AN OPHTHALMIC LENS - A method for determining an ophthalmic lens includes choosing an initial lens with a first face and a second face and defining an initial surface for the second face of the lens with a central zone of diameter D | 10-01-2009 |
20090290121 | METHOD FOR DETERMINING A SET OF PROGRESSIVE MULTIFOCAL OPHTHALMIC LENSES - A method for determining by optimization a set of progressive ophthalmic lenses for a given user for whom a near vision power addition (Add | 11-26-2009 |
20090310082 | OPHTHALMIC LENS ELEMENT - An ophthalmic lens element is disclosed. The, ophthalmic lens element includes a central region of low surface astigmatism and a peripheral region. The central region includes an upper viewing zone for providing a first power suitable for a wearer's distance vision tasks. The peripheral region has a positive power relative to the first power, and surrounds the central region. The peripheral region provides an optical correction for retarding or arresting myopia for a wearer and includes one or more regions of relatively higher surface astigmatism, a lower or near viewing zone of low surface astigmatism, and a corridor of low surface astigmatism having a surface power varying from that of the upper viewing zone to that of the lower viewing zone. The lower viewing zone is for a wearer's near vision tasks. | 12-17-2009 |
20090323019 | OPHTALMIC LENS AND METHOD FOR PRODUCING SAME - The invention concerns a method for producing a lens ( | 12-31-2009 |
20090323020 | TORIC INTRAOCULAR LENS WITH MODIFIED POWER CHARACTERISTICS - An intraocular lens for correcting or reducing the astigmatism of a cornea includes an optical element that has optical properties and characteristics that make it tolerant of rotational misalignment, when compared to a comparable lens having a uniform astigmatism orientation across its entire optical element, leading to more relaxed tolerances for a surgeon that implants the lens. The optical element of the toric ophthalmic lens has meridians associated therewith, including a high power meridian and a low power meridian orthogonal to the high power meridian. The optical element has at least one radially modulated meridian along which power monotonically varies with increasing radial position. | 12-31-2009 |
20100020285 | OPTICAL LENS WITH VARIABLE FOCAL LENGTH - The invention concerns an optical lens comprising a cavity formed by two transparent windows and a peripheral frame positioned in between, said cavity containing first and second liquids, non miscible, forming an interface, said interface being movable by electrowetting on a wall of said peripheral frame by application of a voltage between first and second electrodes, wherein said wall has a non symmetrical revolution surface, the geometrical shape of which is calculated such that said interface is of a predetermined shape, for example substantially spherical, for at least one value of said voltage. | 01-28-2010 |
20100026954 | PROGRESSIVE-ADDITION LENS, METHOD FOR PREPARING SHAPE DATA THEREOF, METHOD FOR MANUFACTURING THE LENS, AND APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PREPARING SUCH SHAPE DATA - In a progressive-addition lens having a progressive surface on one side and an aspherical or atoroidal surface on the other side, the lens shape is designed so that a high degree of aberration correction can be carried out on the periphery of the lens and the distance power and addition power of the lens acting on the eye of a wearer substantially correspond to the distance power and addition power measured by a lens meter. A progressive-addition lens includes a progressive surface and an aspherically designed surface formed of an aspherical or atoroidal surface, and the reference point of the aspherically designed surface is located in the vertical direction of the lens below a prism reference point of the progressive surface and above a near design reference point. | 02-04-2010 |
20100045931 | Short Channel Progressive Addition Lenses - Designing a progressive addition lens includes using scaled surface powers and/or cylinder powers of base curves to determine a set of power targets, and using these targets to determine a lens design. | 02-25-2010 |
20100060851 | OPHTHALMIC LENS - A progressive ophthalmic lens includes at least one complex surface having a principal progression meridian. The complex surface has a horizontal reseau of bands and at least one geometrical quantity of the complex surface is substantially equal in all bands of the reseau for a given point of a vertical. | 03-11-2010 |
20100060852 | SINGLE VISION SPECTACLE LENS - An improved single lens comprising: | 03-11-2010 |
20100073632 | STATIC PROGRESSIVE SURFACE REGION IN OPTICAL COMMUNICATION WITH A DYNAMIC OPTIC - An ophthalmic lens is presented in which the lens includes a progressive addition region and a dynamic optic. The dynamic optic and the progressive addition region are in optical communication. The progressive addition region has an add power which is less than a user's near viewing distance add power. The dynamic optic, when activated, provides the additional needed optical power for the wearer to see clearly at a near distance. This combination leads to the unexpected result that not only does the wearer have the ability to see clearly at intermediate and near distances, but the level of unwanted astigmatism, distortion, and vision compromise are reduced significantly. | 03-25-2010 |
20100079722 | OPTHALMIC PROGRESSIVE ADDITION LENS WITH CUSTOMIZED DESIGN FEATURE - A method for manufacturing an ophthalmic progressive addition lens ( | 04-01-2010 |
20100085536 | Ophthalmic Eyeglass Correcting Both Foveal Vision and Peripheral Vision - An ophthalmic eyeglass ( | 04-08-2010 |
20100097569 | Multifocal Intraocular Lens - An intraocular lens for providing a subject with vision at various distances includes an optic having a first surface with a first shape, an opposing second surface with a second shape, a multifocal refractive profile, and one or more diffractive portions. The optic may include at least one multifocal diffractive profile. In some embodiments, multifocal diffractive and the multifocal refractive profiles are disposed on different, distinct, or non-overlapping portions or apertures of the optic. Alternatively, portions of the multifocal diffractive profiles and the multifocal refractive profiles may overlap within a common aperture or zone of the optic. | 04-22-2010 |
20100097570 | ASSYMETRICAL PROGRESSIVE LENS - Progressive lens for viewing a field of vision having at least a first portion including objects in a first range of distances from a viewer and a second portion including objects in a second range of distances from the viewer, the lens comprising: at least two different power zones, the first power zone having lens power required by the viewer for the first range of distances of viewed objects from the viewer, and the second power zone having lens power required by the viewer for the second range of distances of viewed objects from the viewer, wherein the size and location on the lens of the first power zone correspond to size and location in the field of vision of the first portion, and wherein the size and location on the lens of the second power zone correspond to size and location in said field of vision of the second portion. | 04-22-2010 |
20100134755 | PROGRESSIVE-POWER LENS - An eye-side refractive surface | 06-03-2010 |
20100149484 | METHOD FOR THE DETERMINATION OF A PROGRESSIVE OPHTHALMIC LENS - A method for the determination of a progressive ophthalmic lens for a given wearer comprises the states of:
| 06-17-2010 |
20100201941 | OPHTHALMIC LENSES WITH ASPHERIC OPTICAL FEATURES - Aspects of the present invention provide a lens comprising a non-rotationally symmetric aspheric optical element, surface or feature and a rotationally symmetric aspheric optical element, surface or feature. The non-rotationally symmetric aspheric optical feature can be a progressive power region. The non-rotationally symmetric aspheric optical feature and rotationally symmetric aspheric optical feature can be in optical communication when located on different surfaces of a lens or can be collapsed to occupy a single surface of a lens. The non-rotationally symmetric aspheric optical feature and rotationally symmetric aspheric optical feature can each contribute to the add power of a lens. Distortion (e.g., astigmatism) of a lens of the present invention can be reduced (e.g., globally and/or locally) by optically combing the non-rotationally symmetric aspheric optical feature with the rotationally symmetric aspheric optical feature. Accordingly, the effective or useable vision zones of a lens of the present invention can be increased. | 08-12-2010 |
20100208197 | Progressive Ophthalmic Lens for Myopia Correction and Method for Making Such a Lens - A progressive ophthalmic lens for the correction of myopia, that comprises an upper area in which the correction is adapted for peripheral vision of the wearer. Such a lens reduces the risk of long term worsening of myopia for the lens wearer by reducing the defocalisation of an image formed on the retina outside the foveolar area. Also disclosed is a method for making such a lens. According to one improvement, the correction of myopia for the peripheral vision in the upper area of the lens is further adjusted based on a tendency of the wearer to turn the eyes or the head for watching an eccentric object. | 08-19-2010 |
20100238400 | MULTI-LAYERED GRADIENT INDEX PROGRESSIVE LENS - The present disclosure relates to a gradient index progressive addition spectacle lens that provides improved optical performance and a wide visual field. The lens comprises a plurality of axially layered lens sections at least one of which has a refractive index gradient oriented transverse to a meridian of the lens that functions as a progressive intermediate vision zone between viewing portions of different refractive index that provide the refractive powers for corresponding vision portions of the lens. The other layer(s) of the lens incorporates a generally constant or similarly changing refractive index. | 09-23-2010 |
20100245762 | Opthalmic lenses having reduced base out prism - The invention generally relates to a lens and the method of manufacturing progressive addition lenses (PAL) to remove unwanted base out prism and minimize excessive convergence, comprising determining basic configuration of two major lens surfaces to provide a distance portion and near portion, wherein diopter power increases from the distance portion of the lens to the near portion; selecting an amount of prism reduction; and reducing base out prism that inherently occurs as diopter power increases by altering the configuration of the lens as a function of the amount of prism reduction to minimize any disruption of optical properties a lens while decreasing base out prism | 09-30-2010 |
20100245763 | Progressive Power Lens And Method Of Designing The Same - A progressive power lens that prevents degradation in optical characteristics invited by deviation of a pantoscopic angle from the standard value. The lens includes an outer refractive surface and an inner refractive surface, at least one of which is a progressive surface. Because the amount and direction of aberrations generated in distance and near portions are different, correction is given to either or both of the surface powers of the outer and inner surfaces of the lens such that the distance and near portions are differently corrected. | 09-30-2010 |
20100271590 | PAIR OF PROGRESSIVE POWER LENS AND METHOD FOR DESIGNING SAME - An object is to reduce the inconvenience given to the binocular vision function when wearing and using spectacles making use of a pair of progressive power lenses having different distance dioptric power for right and left. For this reason, the present invention associates, in a pair of progressive power lenses corresponding to the right and left eyes, an average dioptric power distribution and an astigmatism distribution determined from prescribed dioptric power and a wear state of one of the progressive power lenses with an average dioptric power distribution and an astigmatism distribution determined from prescribed dioptric power and a wear state of the other progressive power lens, and thereby average dioptric power distributions and astigmatism distributions of the respective progressive power lenses are changed. | 10-28-2010 |
20100283963 | PROGRESSIVE LENS FOR OPHTHALMIC SPECTACLES, HAVING AN ADDITIONAL ZONE FOR INTERMEDIATE VISION - A progressive lens for ophthalmic spectacles has an additional zone for intermediate vision. This additional zone is located beneath a near-vision zone. It enables objects located at a distance of between 1.0 and 1.5 meters, in a direction inclined at about 35 degrees to a line of sight passing through a cross mark (CM) on the lens, to be seen clearly. To achieve this, the optical power progression between a far-vision point (FV) and a near-vision point (NV) of said lens has a power-increase threshold which is located approximately at the cross mark. | 11-11-2010 |
20100290001 | PROGRESSIVE-POWER LENS - An eye-side refractive surface | 11-18-2010 |
20100296052 | Pair of Spectacle Lenses for Anisometropia - According to the invention, a method for producing a spectacle lens or a pair of spectacle lenses is proposed which comprises a calculation and optimization step for at least one of the surfaces of the spectacle lens taking into account an anisometropia D of the eyes of a spectacles wearer, said calculation and optimization step involving a target function F being minimized: minF=Σ | 11-25-2010 |
20100309428 | Flexible Progressive Lens Optimizer - A method is provided for calculating an individual spectacle lens design for a progressive spectacle lens exhibiting an individual vertical position of the distance and/or the near reference points, which can be variably adjusted. A starting design exhibiting a predefined vertical position of the distance and/or the near reference points is determined; the individual spectacle lens design is calculated having the desired, individual vertical position of the distance and/or near reference points. The calculation of the individual spectacle lens design includes calculating the target value S | 12-09-2010 |
20100321633 | PROGRESSIVE OPHTHALMIC LENS - The invention provides a progressive ophthalmic lens suitable to be worn by a person engaged in a sporting activity. For this purpose the lens has a far vision region which is enlarged, and a peripheral field of vision which is separated and whose mean sphere gradients are gentle. When a progressive lens of this kind is allocated to a wearer, the lens can have an addition value that is approximately equal to a prescribed value, or an addition value that is less than the prescribed value. | 12-23-2010 |
20110007266 | MULTIFOCAL LENS HAVING A PROGRESSIVE OPTICAL POWER REGION AND A DISCONTINUITY - Embodiments of the present invention relate to a multifocal lens having a diffractive optical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens. | 01-13-2011 |
20110013137 | PROGRESSIVE POWER LENS, METHOD OF DESIGNING PROGRESSIVE POWER LENS AND METHOD OF EVALUATING PROGRESSIVE POWER LENS - A method of designing and evaluating a progressive power lens where the intersection of the wearer's line of sight, and the refractive surface of the lens is the primary line of fixation (L), the positions upon the primary line of fixation corresponding to far-field vision and near-field vision are the points (F) and (ON), respectively, and the distance of the displacement of (ON) toward the nose in the horizontal direction relative to (F) is the inward shift (OI). Upon the principal meridian curve (M) passing through (F), the point at which the profile curve (H) passing through (ON) in the horizontal direction and (M) is (DN), the displacement of (DN) towards the nose in the horizontal direction relative to (F) is the inward shift (DH), and OI01-20-2011 | |
20110032476 | Adjustable Spectral Transmittance Curved Lens Eyewear - Embodiments of the present invention relate to curved eyewear having an electrically switchable spectral transmittance lens. The lens is curved in orientation, which aids in reducing eyelash contact while increasing a peripheral field of view for a wearer of the curved eyewear. The electrically switchable spectral transmittance lens, in an embodiment, includes a plurality of zones that may be switched in-phase or out-of-phase with each other depending on an activity being performed. Another embodiment utilizes a shatter-resistant material for constructing the lens. Further embodiments utilize a frame member that includes a curved channel for forming the curved orientation of the lens and for maintaining the lens in a desired position relative to a wearer. | 02-10-2011 |
20110037944 | OPHTHALMIC LENS ELEMENT - An ophthalmic lens element is disclosed. The lens element includes a front surface and a rear surface, at least one which includes a horizontal meridian and a vertical meridian. A central region of the lens element includes a foveal vision zone providing a first power for providing clear foveal vision for a wearer. A peripheral region of positive power relative to the first power is also included. The peripheral region includes dual progressive zones located bilaterally of the vertical meridian and extending radially outwardly from the central region. The lens element provides a distribution of surface astigmatism which provides, on the horizontal meridian, a relatively low surface astigmatism in the central region and the progressive zones. | 02-17-2011 |
20110043751 | Multiple Layer Multifocal Composite Lens - Aspects of the present invention provide multiple-layer (multi-layer) composite lenses comprising two or more materials and methods for making the same. A multi-layer composite lens of the present invention can use multiple surfaces (internal or external) to form optical elements that can contribute to a total desired add power. The multiple contributing optical elements can be aligned so as to be in optical communication to form multiple stable vision zones to enhance optical performance and the vision experience of the wearer. Distributing the total desired add power across multiple appropriately aligned optical elements that are in optical communication with one another can reduce the total distortion of the lens, minimize the number of optical discontinuities introduced, can reduce optical power jump as experienced by the wearer's eye when traversing any discontinuity, and can reduce the visibility of any introduced optical discontinuity as perceived by an observer looking at the wearer. | 02-24-2011 |
20110043752 | Multifocal Lens Having A Progressive Optical Power Region and a Discontinuity - Embodiments of the present invention relate to a multifocal lens having a diffractive optical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens. | 02-24-2011 |
20110051081 | Progressive Multifocal Ophthalmic Lenses Identically Optimized Over A Wide Range of Refractive Indices, Base Curves, and Additions - The invention relates to so-called progressive medical eyeglass lenses. A progressive lens is a type of lens for making eyeglasses for correcting human vision defects, being adapted simultaneously to far vision and to near vision. The present invention makes it possible to reconcile a design that is finely optimized over a wide range of variables; it enables the looked-for optical powers to be made for any progressive lens prescription while controlling and obtaining a distribution of virtually identical optical values on the entire surface of the lens, and doing so for a wide range of materials (i.e. of refractive indices) e.g. lying in the range 1.498 to 1.74 (values mentioned here in non-exhaustive manner), and for any combination of refractive index, of basecurves lying in the range 0.5 diopters to 10.5 diopters, and for any addition values, over an addition range of 0.5 diopters to more than 3.5 diopters. This design presents exceptional “robustness”, thereby eliminating the major obstacle of conventional progressive lenses that present characteristics that vary strongly and that depend strongly on the selected materials, basecurves, and additions. | 03-03-2011 |
20110058143 | MULTIFOCAL OPHTHALMIC LENS WITH DISCONTINUITIES - Aspects of the present invention provide multifocal ophthalmic lenses—for example, an ophthalmic lens having a progressive addition optical power region—having one or more discontinuities. The discontinuities can be used to merge or connect regions of the lens surface having different curvatures or average optical power. The use of discontinuities can obviate the need for blend zones which are largely responsible for the introduction of unwanted astigmatism in conventional lenses. In turn, a multifocal ophthalmic lens of the present invention can provide a desired additive power with less unwanted astigmatism than a conventional progressive addition lens (PAL). | 03-10-2011 |
20110090455 | Opthalmic Lens With Regressive and Non-Regressive Rotationally Symmetric Optical Design Elements - Aspects of the present invention provide an ophthalmic lens comprising at least one regressive and at least one non-regressive rotationally symmetric optical design element. The regressive and non-regressive optical design elements can be combined so as to form a desired optical power profile for the lens while simultaneously exploiting the different relative orientation of the astigmatic vectors of the constituent regressive and non-regressive design elements, thereby resulting in reduced unwanted astigmatism. The regressive and non-regressive rotationally symmetric optical design elements can be positioned on different lens surfaces and in optical communication or can be collapsed onto the same lens surface. The regressive and non-regressive rotationally symmetric optical design elements can each contribute to the total add power of an ophthalmic lens. The regressive and non-regressive rotationally symmetric optical design elements can be combined with any other optical design feature positioned on the same or a different surface of the lens. | 04-21-2011 |
20110116037 | PROGRESSIVE ADDITION LENS DESIGN - Aspects of the present invention provide progressive addition lenses (PALs) and techniques for designing PALs that result in improved visual performance for the wearer. PALs of the present invention can have vision zones with widths that are more in line with the actual or functional sizes used by wearers. PALs of the present invention can also introduce controlled amounts of unwanted astigmatism into one or more vision zones. By allowing vision zones to include manageable levels of astigmatism, the resulting PAL can avoid the harsh build-up of astigmatism typically found in conventional PALs at the periphery of the channel and viewing zones. Further, PALs of the present invention can be designed using a merit function to achieve an optimized iterative design that accounts for astigmatism vector orientation and not simply astigmatism magnitude as is the case with conventional PAL design. | 05-19-2011 |
20110176103 | Refractive-Diffractive Multifocal Lens - Aspects of the present invention provide multifocal lenses having one or more multifocal inserts comprising one or more diffractive regions. A diffractive region of a multifocal insert of the present invention can provide a constant optical power or can provide a progression of optical power, or any combination thereof. A multifocal insert of the present invention can be fabricated from any type of material and can be inserted into any type of bulk lens material. A diffractive region of a multifocal insert of the present invention can be positioned to be in optical communication with one or more optical regions of a host lens to provide a combined desired optical power in one or more vision zones. Index matching layers of the present invention can be used to reduce reflection losses at interfaces of the host lens and multifocal insert. | 07-21-2011 |
20110181834 | OPHTHALMIC LENS AND SPECTACLES COMPRISING AT LEAST SUCH ONE LENS - Ophthalmic lens including at least one spherical face with an optical centre and a geometrical centre, and having in succession a top vision region, an intermediate vision region and a bottom vision region, with a principal meridian of progression traversing the three vision regions of the aspherical face, the lens being noteworthy in that the top vision region is adapted for mid-distance vision, the bottom vision region is adapted for near-distance vision, and the intermediate vision region is adapted for intermediate distance vision, and in that the optical centre of the aspherical face is in the intermediate vision regionn, the optical centre coinciding with the geometrical centre of aspherical face. This lens is particularly suitable for people with emmetropic longsightedness. | 07-28-2011 |
20110187993 | LENS WITH CONTINUOUS POWER GRADATION - The present invention is embodied in ophthalmic lenses having a first lens surface that is described by a continuous, gradual increase in optical power that proceeds without inflection points of discontinuities across substantially the entire useable optical area of this lens surface, and an opposite surface of the lens configured to cooperate with the power gradation of the first surface to provide a desired prescription, including at least one stabilized area of optical power. The power gradation of the first surface increases from one edge of the useable area to substantially the opposite edge, and may increase according to linear or non-linear relationships. In another preferred embodiment, the two lens surfaces cooperate to create two stabilized areas of optical power, for a prescription with near-viewing and distance-viewing values. | 08-04-2011 |
20110194067 | SPECTACLE LENS EVALUATING METHOD, SPECTACLE LENS DESIGNING METHOD USING SAME, SPECTACLE LENS MANUFACTURING METHOD, SPECTACLE LENS MANUFACTURING SYSTEM, AND SPECTACLE LENS - More appropriate evaluation, design, and manufacture are made feasible by taking visual functions into consideration more appropriately. In order to achieve this object, in the present invention, provided is a spectacle lens evaluation method for evaluating spectacle lenses using a visual acuity function, characterized in that the visual acuity function includes relative accommodation power as a factor, the relative accommodation power referring to the range expressed in terms of diopter in which distinct vision is achieved while maintaining convergence of a gaze point. | 08-11-2011 |
20110194068 | V-Shape Progressive Lens Design - Progressive lens designs are provided with various features relative to the corridor width, corridor length, and relative positioning of areas of maximum gradient power progression and maximum gradient, that differ from conventional progressive lens designs. Progressive lenses according to the invention may include a “V-shaped” cylinder map, a relatively low position of maximum gradient of power progression, and/or a large vertical separation between vertical position of maximal cylinder and vertical position of maximum gradient of power progression. | 08-11-2011 |
20110194069 | Multifocal Lens Having a Progressive Optical Power Region and Discontinuity - Embodiments of the present invention relate to a multifocal lens having a mostly spherical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens. | 08-11-2011 |
20110194070 | LENS ELEMENT WITH IMPROVED PRISMATIC POWER - A lens element for progressive spectacles. The lens element has at least one near viewing zone and a distance viewing zone which have different focusing powers. Further, the lens element has a predetermined prismatic power. Furthermore, a vertical component of the predetermined prismatic power is realized at a first point of the lens element, and a horizontal component of the predetermined prismatic power is realized at a second point of the lens element. The present invention also relates to a method for producing a lens element. | 08-11-2011 |
20110199573 | PROGRESSIVE-ADDITION LENS, METHOD FOR PREPARING SHAPE DATA THEREOF, METHOD FOR MANUFACTURING THE LENS, AND APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PREPARING SUCH SHAPE DATA - In a progressive-addition lens having a progressive surface on one side and an aspherical or atoroidal surface on the other side, the lens shape is designed so that a high degree of aberration correction can be carried out on the periphery of the lens and the distance power and addition power of the lens acting on the eye of a wearer substantially correspond to the distance power and addition power measured by a lens meter. A progressive-addition lens includes a progressive surface and an aspherically designed surface formed of an aspherical or atoroidal surface, and the reference point of the aspherically designed surface is located in the vertical direction of the lens below a prism reference point of the progressive surface and above a near design reference point. | 08-18-2011 |
20110211159 | Spectacle Lens and Method for Designing the Same - A spectacle lens includes: a near region corresponding to near vision, wherein a spherical equivalent power at a point located on a principal line of fixation in the near region is larger than the spherical equivalent power in a region away from the point toward the nose, in a horizontal direction with reference to a spectacle wearer but smaller than the spherical equivalent power in a region away from the point toward the ear in the horizontal direction. | 09-01-2011 |
20110222019 | Progressive-Power Lens Designing Method, Progressive Power Lens Designing System, and Progressive-Power Lens - A progressive-lens designing system includes a manufacturer-side terminal installed in a lens manufacturer connected to a shop-side terminal installed in a spectacle shop or any other location via a network. The manufacturer-side terminal includes an optimization coefficient setting section that uses a variety of data received from the shop-side terminal to set an optimization coefficient for each target object in specific work, a dioptric power computing section that computes target dioptric power for each target object, a lens designing section that performs lens design, and an order processing section that performs order processing when receiving an order placed from the shop-side terminal. | 09-15-2011 |
20110261318 | MULTI-FOCAL LENSES WITH SEGMENTED BOUNDARIES - The invention provides multi-focal segmented lenses with boundaries that include at least one blended portion and at least one sharp portion. The lenses may possess, for example, the aesthetic advantage of blended multi-segment or progressive lenses while largely retaining the functional advantage of multi-segment lenses with sharp segment boundaries. | 10-27-2011 |
20110273664 | METHOD FOR DETERMINING AN ASPHERIZATION LAYER FOR AN OPHTHALMIC LENS - The invention relates to a method for determining an aspherization layer for an ophthalmic lens for a wearer for whom a power and an astigmatism have been prescribed. The method can be used equally satisfactorily on a unifocal or a multifocal lens. The invention also extends to the method for determining an ophthalmic lens from an aspoherization layer obtained by the method. The invention improves the optical performance of lenses obtained from semi-finished lenses in which the complex surface is unknown. | 11-10-2011 |
20110285959 | REDUCTION OF IMAGE JUMP - Embodiments of the present invention disclosed herein are directed to apparatuses and systems for reducing the image jump from a dynamic lens component. The apparatuses and systems disclosed herein may be used in ophthalmic devices, such as eye glasses or contact lenses, as well as any other suitable application. Embodiments provide a first apparatus that comprises a dynamic power zone having a periphery. The first apparatus further comprises a static power zone in optical communication with at least a portion of the dynamic power zone. The static power zone has a negative optical power at a first portion of the periphery of the dynamic power zone. | 11-24-2011 |
20110317127 | Progressive Power Eyeglass Lens and Design Method Thereof - A progressive power eyeglass lens includes an object side surface that includes a first progressive surface, an eyeball side surface that includes a second progressive surface, and a pair of points that is passed by a light beam passing through a rotation center of an eyeball of an eyeglasses wearer, the pair of points including a first point that exists on a principal meridian on the eyeball side surface between a progressive start point to a progressive end point, and a second point that exists on a principal meridian on the object side surface. | 12-29-2011 |
20120013846 | FINISHED OPHTHALMIC LENS AND CORRESPONDING METHODS - Finished ophthalmic lens and corresponding methods. Finished ophthalmic lens having one concave face, one convex face; an outer perimeter with a thickness within a pre-established range; a central useful area that fulfils a pre-established ophthalmic prescription, which defines a machined surface, and which has a useful perimeter that coincides with a perimeter of a pre-established frame; and an outer transition area that joins the useful perimeter of the central useful area to the outer perimeter. A transition area includes a transition surface that extends from the machined surface and as far as the outer perimeter, is continuous and a derivative thereof is continuous on all points, including joining line between the transition surface and the machined surface. | 01-19-2012 |
20120019773 | HIGH PERFORMANCE, LOW COST MULTIFOCAL LENS HAVING DYNAMIC PROGRESSIVE OPTICAL POWER REGION - An embryonic optical apparatus including a first lens component including a first surface and a second surface on an opposite side of the first lens component from the first surface, and a second lens component comprising a flexible element, wherein the flexible element of the second lens component comprises a first region that is variably movable towards and away from the first surface, thereby dynamically adjusting an optical power of the embryonic optical apparatus with respect to a light path through the first region and the first surface, and wherein the embryonic optical apparatus is configured such that at least a portion of the second surface is permanently alterable to permanently define an optical power of the first lens at least a second region of the second surface, the second region being optically aligned with the first region, thereby resulting in a prescription-quality ophthalmic optical apparatus. | 01-26-2012 |
20120019774 | Opthalmic Lenses Having Reduced Base Out Prism - The invention generally relates to a lens and the method of manufacturing progressive addition lenses (PAL) to remove unwanted base out prism and minimize excessive convergence, comprising determining basic configuration of two major lens surfaces to provide a distance portion and near portion, wherein diopter power increases from the distance portion of the lens to the near portion; selecting an amount of prism reduction; and reducing base out prism that inherently occurs as diopter power increases by altering the configuration of the lens as a function of the amount of prism reduction to minimize any disruption of optical properties a lens while decreasing base out prism. | 01-26-2012 |
20120038882 | Static Progressive Surface Region In Optical Communication With A Dynamic Optic - An ophthalmic lens is presented in which the lens includes a progressive addition region and a dynamic optic. The dynamic optic and the progressive addition region are in optical communication. The progressive addition region has an add power which is less than a user's near viewing distance add power. The dynamic optic, when activated, provides the additional needed optical power for the wearer to see clearly at a near distance. This combination leads to the unexpected result that not only does the wearer have the ability to see clearly at intermediate and near distances, but the level of unwanted astigmatism, distortion, and vision compromise are reduced significantly | 02-16-2012 |