Abstract: A periodic optimization method for a diffractive optical element includes converting coordinates of individual target spots of a target spot array into angular spectrum coordinates, selecting an initial period, calculating diffraction orders of individual target spots, rounding the diffraction order, calculating the coordinates of actual projection spots by using the rounded diffraction orders, calculating evaluation indicator of period optimization, adjusting the period, and repeating the steps, and comparing the evaluation indicators to determine an optimal period for the diffractive optical element. With the periodic optimization method, an actual spot array is made to match a target spot array to the greatest possible extent with a small amount of calculations, thereby improving the design quality and accuracy of a diffractive optical element.

Abstract: Methods of designing at least one progressive ophthalmic lens for a user having a dominant eye and a non-dominant eye are provided. These methods include determining a first inset for a lens for the dominant eye, and determining a measurement of phoria of the user. The methods further include determining a second inset for a lens for the non-dominant eye depending on the first inset and on the measurement of phoria, and designing the lens for the non-dominant eye according to the second inset. Systems, computer systems and computer program products suitable for performing these design methods are also provided. Progressive ophthalmic lenses designed according to said design methods are also provided.

Abstract: An image signal processor includes a memory configured to store a table, the table including a plurality of point spread functions (PSFs), a PSF selection circuit configured to output at least one of the plurality of PSFs stored in the table based on selection information, a disparity extractor configured to extract a disparity value from image data corresponding to pixel signals output from at least one pixel of a plurality of pixels included in an image sensor, and a processing circuit configured to generate pixel location information for the at least one pixel. Each of the pixels of the plurality of pixels includes a plurality of photoelectric conversion elements. The selection information includes the disparity value and the pixel location information.

Abstract: A system for the supply of ophthalmic lenses and related methods for providing ophthalmic lenses for enhanced experience based on right-handedness and left-handedness.

Abstract: 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.

Abstract: Ophthalmic lenses for the treatment of presbyopia may be improved to enhance the visual experience of the patient. By adjusting the optical design of presbyopic lenses to account for changes in pupil size due to the degree of myopia or hyperopia, an enhanced visual experience may be achieved independent of the level of ametropia.

Abstract: A method and apparatus for creating a progressive spectacle lens design by transforming a starting design. The starting design is defined to include specification of a principal line, specifications for target astigmatism values A(u=0,y) along the principal line, and specifications for the course of a base target isoastigmatism line, which is described by a one-dimensional function of the form uG(y)=ƒ(y). The method and apparatus transform the starting design by modifying the course of the base target isoastigmatism line uG(y)?u?G(y), and calculating the target astigmatism values A(u,y) of the spectacle lens design by an interpolation between the target astigmatism values A(u=0,y) on the principal line and the target astigmatism values A(u?G(y),y) on the modified base target isoastigmatism line. Furthermore, the method and apparatus are provided to create the spectacle lens for the wearer on the basis of the progressive spectacle lens design.

Abstract: Contact lenses and methods of manufacturing contact lenses are provided. In one aspect, a method includes: forming a substrate having an uneven surface; providing a sensor at a first region of the substrate; providing a chip at a second region of the substrate; and encapsulating the substrate, sensor and chip in a polymer. The method also includes: patterning interconnections from the first region of the substrate to the second region of the substrate; and patterning metal pads proximate to the second region of the substrate. The chip can be provided on a metal pad. The uneven surface can be a sloped surface or one or more sloped channels in the substrate, and the channels can be wide enough to receive interconnections for the chip and to receive the chip. Further, the substrate can be ring-shaped and curved prior to encapsulation.

Abstract: A method, a system and a computer program product are provide for optimizing a spectacle lens for a wearer with a selectable quality grade. In particular, a set of individual parameters is determined for the wearer and a desired quality grade is identified. Depending the identified quality grade, the set of individual parameters is adapted and a surface of the spectacle lens is calculated based on the adapted set of individual parameters.

Abstract: A method implemented by computer means for determining a virtual wearer-ophthalmic lens-ergorama system associated with an optical function of an ophthalmic lens for a given wearer, comprising: a prescription data providing step, an optical reference surface data providing step, a virtual wearer-ophthalmic lens-ergorama system determining step, a criteria selecting step, a target value defining step, an evaluation step, and a modification step, in which at least one parameter of the virtual wearer-ophthalmic lens-ergorama system different from the base curve of the ophthalmic lens is modified, in order to minimize the difference between the target value and the evaluation criterion value.

Abstract: The invention relates to a finished or semi-finished lens which comprises: a disc containing all the points of the lens that have the same abscissa and the same ordinate as points located within a circle in the reference plane having a diameter of 30 millimeters and centered on the prism reference point; a progression length of less than 14.5 millimeters; a first specific point having a cylinder value equal to the maximum cylinder value of all the points of the lens located in the nasal area and in the disc; and a second specific point having a cylinder value equal to the maximum cylinder value of all the points of the lens located in the temporal area and in the disc; a first ratio between: the maximum gradient of the cylinder for the points of the lens that have the same abscissa and the same ordinate as the points located on segments connecting the mounting cross to the first and second specific points, and surface addition of less than 0.

Abstract: A method for calculating or optimizing an ophthalmic lens design comprising the steps of providing a given ophthalmic lens design and assessing the given design by a computer comprising a media suitable for storing electronic instructions.

Abstract: The invention relates to a method for determining an ophthalmic lens wherein: a first and a second reference axes (?1, ?2) are determined, the first reference axis being set to a value comprised between [???20°, ??+20°] with ?? being the mean axis of astigmatism over a first temporal portion (Portion 1), and the second reference axis being set to a value comprised between [yN?20°, YN+20°] with YN being the mean axis of astigmatism over a second nasal portion (Portion 2); a combined reference axis (?) is determined as a linear combination of the first and second reference axes; over the first portion, the sphere value along the combined reference axis is superior to the sphere value along a perpendicular axis to the combined reference axis (Formula I); and over the second portion, the sphere value along the combined reference axis is superior to the sphere value along a perpendicular axis to the combined reference axis (Formula I).

Abstract: Method for determining the edge contour of an uncut spectacle lens comprises: a spectacle frame data providing step, a minimum edge thickness providing step, an initial contour providing step, a thickness determining step, an optimized point selecting step, a repeating step, and a edge contour determining step.

Abstract: A progressive-power spectacle lens design method, the progressive-power spectacle lens including a distance portion, a near portion, and a progressive portion provided between the distance portion and the near portion, the method comprising: decreasing a distance along a principal meridian from a fitting point to a progression start point and increasing a length of a progressive corridor defined by the progression start point and a progression end point when addition power is large, whereas increasing the distance along the principal meridian from the fitting point to the progression start point and decreasing the length of the progressive corridor when the addition power is small, wherein the distance from the fitting point to the progression end point is fixed irrespective of the addition power.

Abstract: Methods for optimizing postural prism to be added to a pair of ophthalmic multifocal lenses (lenses) adapted to a wearer and to slow down myopia progression are described. The method includes an initial pair of lenses in a providing step S1. In a postural prism adding step S2, a same postural prism is added to each lens. In a gazing step S3, the wearer gazes at a first distance target through the lenses with the added postural prism. A gazing direction determining step S4 determines the wearer's gazing direction during S3. Steps S2 to S4 may be repeated while changing the added postural prism, wherein the added postural prism is smaller than or equal to a maximum prism value. Steps S2 to S4 may be repeated to determine the smallest added postural prism for which the wearer's gazing direction in step S4 passes through the first vision zone.

Abstract: A process for designing an ophthalmic progressive eyeglass comprises providing an initial front surface and an initial back surface. Respective addition values of front and back surfaces of the eyeglass are varied based on said initial front and back surfaces using a surface derivation tool. These surface addition values are selected so that the eyeglass exhibits an eyeglass addition value which matches a wearer's prescription and a value for a design feature which matches a target value. Said target value may be used for customizing the ophthalmic progressive eyeglass. The process does not require point-to-point surface optimization.

Abstract: The invention is directed to a contact lens design and methods of manufacturing, fitting and using such lenses. The contact lens may be designed for use in a corneal refractive therapy (CRT) program. The lens provides a design which allows proper fitting of a patient, whether for corrective contact lenses or for a CRT program. Due to the rational design of the lenses according to the present invention, a minimal number of lens parameter increments can be identified to cover the range of common corneas. It is therefore possible to provide pre-formed lens buttons or blanks which are easily formed into a final design, thereby simplifying and speeding up the treatment process. Further, any adjustment of the lens design which may be required based upon trial fitting or the like, is easily envisioned and implemented by the fitter.

Abstract: A method of making a lens having adjustable optical power is disclosed. The lens is adjustable by relative lateral translation of at least two lens elements. The method may comprise providing a function yielding optical properties of the lens from starting geometries for the lens elements; refining the function to approximate required gaze angle optical performance over a range of said lateral translation; and using the refined function to derive geometries for making the lens elements. The function may comprise first and second functional parts respectively for the lens elements, and the method comprises using the function to derive geometries for making the lens elements, wherein the function relates optical path difference to a position across the lens elements, and the rate of change of curvature of the first functional part with position is different to the rate of change of curvature of the second functional part with position. There is also disclosed a lens having adjustable optical power.

Abstract: Lenses are designed using the corneal topography or wavefront measurements of the eye derived by subtracting the optical power of the eye after orthokeratology treatment from the optical power before orthokeratology treatment.

Abstract: A method for calculating the required power of a toric implant by using both the measured pre-operative corneal astigmatism and the predicted surgically-induced post-operative astigmatism. The surgically-induced post-operative astigmatism is predicted using power vector analysis of the surgical technique employed by the surgeon. Such a method provides a more accurate method of calculating the required post-operative refractive power of the implant. The method can be implemented manually, but preferably is automated by implementation on a computer through appropriate software.

Abstract: Provided herein is a computer program product comprising a non-transitory computer-readable medium storing an algorithm to optimize a wavefront guided correction for a custom ophthalmic lens. The correction is determined from inputs of quantified wavefront error and registration uncertainty and a metric predictive of a visual performance task of interest and provides a level of visual performance within a user-defined performance range. Also provided is a method for optimizing a wavefront guided correction for a custom ophthalmic lens via inputting residual wavefront error values and quantified translational and rotational movements into an algorithm configured to determine the optimal wavefront guided correction therefrom and a custom ophthalmic lens comprising the correction.

Abstract: A method for determining by optimization a set of progressive ophthalmic lenses for a given user for whom a near vision power addition (Addn) has been prescribed includes the following steps: measuring the user's near vision individual physiological parameters; determining an ergorama associating, on each lens, a target point in each look direction in worn conditions; determining a target power defect and a resulting target astigmatism for each direction of look under worn conditions, the target power defect and the resulting target astigmatism being determined from the user's measured physiological parameters; computing the power required for each lens for said ergorama by successive iterations to reach the target power defect and the target astigmatism for each look direction.

Abstract: A method for making a hydrogel, photochromic contact lens including supplying a first lens composition comprising a contact lens monomer and a photochromic material to a front contact lens mold and supplying a second lens composition to said contact lens mold wherein the viscosity of said first composition is at least about 1000 cp greater than the viscosity of said second contact lens composition, and the makeup of said second composition matches the of said first composition to reduce strain between said compositions of the resulting lens.

Abstract: The present invention relates generally to lens design and, more particularly, to a method for designing, evaluating and optimizing ophthalmic lenses and laser vision correction in order to optimally manage issues resulting from, or related to, halos.

Abstract: The invention relates to a method for determining an ophthalmic lens for a person (i.sub.1, i.sub.2, i.sub.3) to wear said lens, comprising the following steps: i) determination of the size (T.sub.1, T.sub.2, T.sub.3) or height of the eyes (H.sub.1, H.sub.2, H.sub.3) of the person to wear the lens; and ii) calculation of at least one characteristic of the ophthalmic lens according to the size (T.sub.1, T.sub.2, T.sub.3) or the height of the eyes (H.sub.1, H.sub.2, H.sub.3) of the person to wear the lens. The ophthalmic lens can be progressive strength or unifocal. The invention also relates to an optimization method and a method for producing an ophthalmic lens implementing such a definition method. The invention further relates to a set of lenses having at least one characteristic that depends on the size and the height of the eyes of the person to wear the lens.

Abstract: Disclosed is a progressive ophthalmic lens including a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value and a cylinder value, the front surface of the lens including: —a far vision zone having a far vision reference point; —a near vision zone having a near vision reference point; —a main meridian, wherein the front surface is regressive and has: —a sphere gradient normalized value of less than 7.50·10?1 mm?1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); —a cylinder gradient normalized value of less than 1.45 mm?1 at any point in the central portion of the lens.

Abstract: A method for stabilizing contact lenses includes providing a lens design with a nominal set of stabilization zone parameters, applying a merit function to the lens design based on balancing moments of momentum, and creating a contact lens design with improved stabilization based on the application of the merit functions to the lens design with a nominal set of stabilization zone parameters.

Abstract: A lens, system and/or method for providing custom ocular aberrations for enhanced higher visual acuity. Scaled versions of a patient's aberration pattern may either attenuate or amplify the overall amount of ocular aberrations, to either correct or partially correct a patient's aberrations leading to enhanced visual acuity and/or extended depth of focus. This may be binocularly applied in order to provide high visual acuity in a patient at least at near, far and intermediate distances. The method may include obtaining an optimized binocular summation of both eyes of the patient; designing a first lens solution to correct or partially correct the dominant eye's aberrations according to an attenuated scaled version of a patient's ocular aberrations in the dominant eye; and designing a second lens solution to provide an additional customized extension of depth of focus by the induction of scaled patterns of ocular aberrations in the non dominant eye.

Abstract: Method for determining a progressive ophthalmic lens wherein: a first or a second reference axes (?1, ?2) are determined, the first reference axis being set to a value comprised between [?T?20°, ?T+20°] with ?T being the average axis of astigmatism over a first temporal portion, and the second reference axis being set to a value comprised between [?N?20°, ?N+20°] with ?N being the average axis of astigmatism over a second nasal portion; over the first portion, the sphere value along the first reference axis is superior to the sphere value along a perpendicular axis to the first reference axis (SPH(?1)>SPH(??1)); or over the second portion, the sphere value along the second reference axis is superior to the sphere value along a perpendicular axis to the second reference axis (SPH(?2)>SPH(??2)).

Abstract: A method for determining target optical functions for a pair of ophthalmic lenses is provided, the method comprising steps of: generating a first target optical function (OFT1) for a first lens of the pair based at least on data relating to a first eye, generating a second target optical function (OFT2) for a second lens of the pair based at least on data relating to the first eye. This method makes it possible to obtain optical functions having improved symmetry. Thus, when using the target optical functions in an optical optimization method, lenses with improved binocular properties can be obtained. The comfort of the wearer of the pair of lenses is thus improved.

Abstract: A method for manufacturing an externally circular precursor lens that is processed into a rim-shaped lens includes inputting processing data to specify the shape of the rim-shaped lens, and processing a material block based on the processing data so as to manufacture a precursor lens. An elliptical virtual rim surrounding the precursor lens manufactured at that time is imaginarily set, and is processed based on the processing data up to that range, and, outside the virtual rim, an amount of sag is changed to secure the edge thickness of the precursor lens. This method for manufacturing a precursor lens for a rim-shaped lens reduces an excessive load imposed on a processing tool during processing, allows the precursor lens to be processed into a rim-shaped lens while satisfactorily maintaining its edge thickness without the lack of the edge of the precursor lens, and results in a thin lens.

Abstract: In one aspect, the present invention provides a method for correcting vision that employs two lenses, at least one of which is a multifocal lens, with different focusing characteristics for use in the two eyes of the patient. The visual performance of each lens (e.g., visual contrast or acuity) is selected in accordance with a predefined relation so as to optimize the binocular visual performance provided by the combination of the lenses.

Abstract: A computer-implemented method and a device for optimizing an optical element comprising at least one diffraction grating, wherein at least one refractive surface contributing to the refractive light deflection and/or the at least one diffraction grating of the optical element are/is optimized in such a way as to minimize the color fringe and at least a second-order aberration of the optical element. Also, a corresponding production method and a corresponding device for producing an optical element comprising at least one diffraction grating.

Abstract: A method and system for producing a first spectacle lens for a specific situation of wear for correcting at least a first astigmatic refraction of a first eye of a wearer, which has a first cylinder reference axis ?0(1) in a reference direction of sight ?ez(1) of the first eye. According to the method and apparatus, a primary direction of sight ?e?(1,p) of the first eye for at least one primary evaluation point ib(1,p) of the first spectacle lens is determined and a corresponding primary direction of sight ?e?,k(2,p) of a second eye of the spectacle wearer that corresponds to the primary direction of sight ?e?(1,p) of the first eye in the specific situation of wear is also determined.

Abstract: A method for designing and manufacturing a monofocal ophthalmic lens and corresponding lens. A surface of the monofocal ophthalmic lens is defined by: f(x,y)=a1+a2?{square root over (1?a3x2?a4y2)}+a5exp{a6x4+a7y4+a8x2y2} where a1-a8 are coefficients, a5 is other than 0 and at least one of a6, a7 and a8 is other than 0, including a hyperbolic component and an exponential component. The coefficients can be calculated by an iterative calculation and the merit function as follows: fm = [ ? i ? ? i ? m i 2 ? ( ? ) ] 1 / 2 where mi is a value of an optical property at a specific viewing angle ? with respect to an optical axis of the lens, and ?i is a weighting value.

Abstract: There is provided a lens that includes a corridor having a width greater than or equal to about 6 millimeters. The lens has astigmatism less than or equal to about 0.5 diopter within the corridor. There is also provided an item of eyewear that includes such a lens, and a method for representing a surface of an ophthalmic lens.

Abstract: A model for testing contact lens designs is used in applications such as methods for designing contact lenses in which one subjects a lens design to the model, determines whether the lens meets its design objectives by application of the model, keeps the lens design if it does, and modifies the lens design if it does not.

Abstract: An ophthalmic lens includes spherical aberration in an amount that accounts for spherical aberration introduced into the lens during the manufacturing process and/or spherical aberration differences in the manufactured lens measured off of the eye and measured on the eye. The result is a lens-and-eye optical system is free or substantially free of spherical aberration, i.e., having only negligible spherical aberration. Because the optical system is free or substantially free of spherical aberration, there is no or only negligible coma induced by the normal misalignment of the lens optical axis and the eye's primary line of sight. The result is a lens-and-eye optical system that provides enhanced optical performance and visual quality. Also disclosed are methods of designing and manufacturing lenses with spherical aberration adjustments to account for manufacturing process changes and off-eye to on-eye differences.

Abstract: A method of designing a lens having an image plane corresponding to an object located at infinity, comprising optimizing the lens by specifying quantities of light to pass through each of a plurality of the apertures. A method of designing a lens, comprising defining a plurality of objects each at a corresponding object location, at least one of the objects being a virtual object of the lens, and optimizing the lens by specifying for each of the objects a quantity of light to pass through a corresponding aperture disposed in an image space of the lens.

Abstract: The present invention relates generally to lens design and, more particularly, to a method for designing, evaluating and optimizing ophthalmic lenses and laser vision correction in order to optimally manage issues resulting from, or related to, halos.

Abstract: A method of determining binocular performance of a pair of spectacle lenses comprises: a eyes characteristics providing step, a pair of spectacle lenses providing step, a environment providing step, a cyclopean eye positioning step, a binocular performance criteria defining step, and a binocular performance criteria determining step, wherein the cyclopean eye position is customized.

Abstract: The invention relates to a method for determining an ophthalmic lens for a person (i1, i2, i3) to wear said lens, comprising the following steps: i) determination of the size (T1, T2, T3) or height of the eyes (H1, H2, H3) of the person to wear the lens; and ii) calculation of at least one characteristic of the ophthalmic lens according to the size (T1, T2, T3) or the height of the eyes (H1, H2, H3) of the person to wear the lens. The ophthalmic lens can be progressive strength or unifocal. The invention also relates to an optimisation method and a method for producing an ophthalmic lens implementing such a definition method. The invention further relates to a set of lenses having at least one characteristic that depends on the size and the height of the eyes of the person to wear the lens.

Abstract: A method for producing lenses with at least one simple surface that is optically equivalent to a lens having two complex surfaces.

Abstract: The invention relates to the making of a progressive spectacle lens for customizing the lens based on the blur perception by a future lens wearer. Accordingly, a blur threshold value is determined for the wearer according to a blur perception criterion that varies based on an optical-power addition value prescribed for the wearer. The blur threshold value is associated with a reference sight direction for the lens provided to the wearer.