Reduced variation of soft contact lens employing diffractive structure

Abstract

To remedy the problem in which a higher SKU lens with reduced thickness variation cannot satisfy the requirement for optical power correction.SOLUTION: An ophthalmic lens comprise: a main body comprising an optic zone and a peripheral zone disposed adjacently to the optic zone, where the optic zone comprises a refractive structure that exhibits a first optical power; and a diffractive structure disposed within the optic zone, where the diffractive structure exhibits a second optical power, where the ophthalmic lens is associated with a first target SKU optical power.SELECTED DRAWING: Figure 1-2

Description

[Technical field]

[0001] The present disclosure relates to ophthalmic devices such as contact lenses, scleral lenses, wearable lenses including RGP lenses, implantable lenses including inlays and onlays, and any other type of device with an optical component, more specifically, ophthalmic devices having diffractive structures. [Background technology]

[0002] The surface of a typical soft contact lens contains several circular and / or annular zones. The central part of the lens is the optical zone of the lens, which provides the visual correction for the patient's eye. Beyond the optical zone is the coaptation zone, which is actually a region of rapid (or steep) thickness variation, connecting the optical zone area to the lens peripheral area. The lens peripheral area is primarily designed to provide optimized lens stability and comfort.

[0003] In order to achieve the designed lens power, thickness variation is required within the optical zone. In the optical zone, light rays are refracted at various angles across the optical zone area, and therefore visual correction can be obtained. However, for a particular lens (e.g., a stock keeping unit (SKU) with a target refractive power designed for positive and / or negative correction powers), thickness variation across the optical zone area results in either a very thick edge thickness (for larger negative SKU lenses) or a very thin edge thickness (for larger positive SKU lenses). Beyond the optical zone, a junction area is required to connect the lens optical zone edge with the lens peripheral area. If the optical zone edge thickness is very thin or very thick, a sharp junction is required. A sharp junction area is difficult to fabricate during manufacturing and uncomfortable for the patient. Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, minimizing thickness variation is important to reduce the abrupt interface area. By minimizing lens thickness variation across the optical zone, the lens power has also been reduced. For higher SKU lenses, the smaller thickness variation cannot meet the power correction requirements.

[0005] Improvement is needed. [Means for solving the problem]

[0006] The present disclosure relates to an ophthalmic device, such as an ophthalmic lens. The ophthalmic device may include a diffractive pattern for the peripheral region of the lens optic zone (OZ) area. At the edge of a soft contact lens, the light refractive power can be modified by the diffractive pattern, and therefore thickness variations are not as important.

[0007] The present disclosure relates to an ophthalmic device, such as an ophthalmic lens, that may include a body including an optic zone and a peripheral zone disposed adjacent to the optic zone, the optic zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed within the optic zone, the diffractive structure exhibiting a second refractive power, the ophthalmic lens being associated with a first target SKU refractive power.

[0008] The ophthalmic lens may comprise a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed within the optical zone, adjacent to the optical zone, or both, the diffractive structure exhibiting a second refractive power, the ophthalmic lens being associated with a first target SKU refractive power, and at least the diffractive structure being configured such that a diameter of the optical zone of the ophthalmic lens and a diameter of the optical zone of the comparative lens are at least 7.0 mm, and the comparative lens is substantially similar to the ophthalmic lens, but the comparative lens is associated with a second target SKU refractive power different from the first target SKU refractive power.

[0009] The ophthalmic lens may comprise a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power, at least the diffractive structure minimizing variation between a thickness of a central portion of the optical zone of the ophthalmic lens and a thickness of a central portion of the optical zone of a comparative lens, the comparative lens being substantially similar to the ophthalmic lens, but the comparative lens having a refractive structure exhibiting a third refractive power different from the first refractive power.

[0010] The ophthalmic lens may comprise a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power, at least the diffractive structure configured to minimize a root-mean-square (RMS) variation between a thickness variation profile of the ophthalmic lens and a thickness variation profile of a comparative lens, the comparative lens being substantially similar to the ophthalmic lens, but the comparative lens having a refractive structure exhibiting a third refractive power different from the first refractive power.

[0011] The ophthalmic lens may comprise a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power, at least the diffractive structure minimizing variation between the optical zone edge bond thickness of the ophthalmic lens and the optical zone edge bond thickness of a comparative lens, the comparative lens being substantially similar to the ophthalmic lens, but the comparative lens having a refractive structure exhibiting a third refractive power different from the first refractive power. [Brief description of the drawings]

[0012] The above and other features and advantages of the present disclosure will become apparent from the following more particular description of preferred embodiments of the present disclosure, as illustrated in the accompanying drawings. [Figure 1-1] 1A and 1B are exemplary depictions of a conventional lens configured for negative and positive refractive power, respectively; [Figure 1-2] 1C and 1D are exemplary depictions of lenses including diffractive structures and configured for negative and positive optical power, according to embodiments of the present disclosure; [Figure 2A] 1 is an exemplary plot of diffraction sag versus radius for a lens according to an aspect of the present disclosure. [Figure 2B] 1 is an exemplary plot of diffractive, refractive, and total power versus radius for a lens according to an aspect of the present disclosure. [Figure 3A] 1 is a graph showing the MTF(A) of a designed contact lens based on and analyzed optical performance modeling. [Figure 3B] 1 is a graph showing the VA(B) of a designed contact lens, also analyzed based on optical performance modeling. [Figure 4A] 13 is a graph showing non-uniform distribution of refractive and diffractive power across the contact OZ area. [Figure 4B] 1 is a table showing example refractive power distributions and diffractive power distributions across lens SKUs (e.g., target SKU powers). [Diagram 5] 1 is a plot of OZ diameter versus refractive power by OZ diameter for a conventional refractive optical design (straight lines) and a hybrid diffractive and refractive lens design (dotted lines). [Figure 6] 1 is a graph showing lens center thickness versus optical power for a conventional refractive optical design (straight line) and a combined diffractive and refractive lens design (dotted line). [Figure 7]1 is a graph showing a spherical lens thickness profile. Specifically, negative lenses have thicker edge thickness than positive lenses. As an example, in a mixed diffractive and refractive design, the lens thickness variation can be the same as the current -3D lens with only refractive power (-3D target SKU power) across the entire SKU range. Thus, other target SKU power lenses can be provided with the same or similar lens thickness variation and therefore with the same comfort as the current -3D lens with only refractive power. [Figure 8] 1 is a graph outlining lens edge thickness versus lens power / SKU. [Figure 9] 1 is a graph showing non-limiting exemplary optical zone (OZ) diameters for various lenses. Other sizes of OZ may be used. [Figure 10] 1 is a graph showing non-limiting exemplary coaptation zone size diameters for various lenses. Other sizes of coaptation zones may be used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The ophthalmic device may include implantable devices and / or wearable devices such as contact lenses. Conventional contact lenses include polymer structures with specific shapes that correct various vision problems. The ophthalmic device may include an optical zone and a peripheral zone disposed adjacent to the optical zone. The optical zone may have one or more of the following functions: vision correction, vision enhancement, other vision-related functions, mechanical support, or even providing a gap to provide clear vision. According to the present disclosure, the optical zone may include a variable optical element configured to enhance vision in near and far ranges based on a signal sensed from the ciliary muscle. The variable optical element may include any device suitable for changing the focal length or refractive power of the lens based on an activation signal from a sensing system described herein. For example, the variable optical element may be as simple as a small piece of optical grade plastic incorporated into the lens that can change its spherical curvature.

[0014] As a non-limiting example, the power of a soft contact lens can be obtained by the variation of lens thickness across the diameter of the optic zone (OZ) of the soft contact lens. In a negative power lens, the thickness of the lens edge can be greater than the center thickness. On the other hand, a positive power lens can have a thicker center thickness compared to the edge. As shown in Figures 1A and 1B for negative and positive, respectively, the higher the power (e.g., the higher the target SKU power), the greater the thickness difference was between the center of the lens and the OZ edge of the lens. Just beyond the OZ edge, a mechanical joint area may be used to ease the lens thickness from the optical edge to a thickness optimized for mechanical stability and lens comfort, e.g., to manipulate the lens thickness in the joint area for comfort. Exemplary OZ diameters for various lenses (SKUs) with various refractive powers (D) are shown in Figure 9. Exemplary joint sizes for various lenses (SKUs) with various refractive powers (D) are shown in Figure 10. As an example, a large variation in lens thickness would imply a steeper interface area to transition the thickness from the OZ edge to the mechanical zone, however, precise manufacture of a steep optical interface is difficult and a steep interface zone would also significantly affect the wear comfort of the lens.

[0015] In the present disclosure, the difference in lens thickness between the center and edge of the lens OZ can be minimized using diffractive structures disposed at or adjacent to the lens OZ edge. Instead of relying entirely on light refraction (due to thickness variation), strong refractive power (e.g., stronger than -4 for minus lenses or stronger than 1D for plus lenses) can also be generated by diffractive structures. Thus, the lenses of the present disclosure can minimize the overall thickness variation across the lens OZ and can minimize abrupt joint zones. Exemplary lens designs incorporating diffractive optics are shown in Figures 1C and 1D for negative and positive lenses, respectively. Diffractive patterns in the OZ peripheral area can optimize the overall lens thickness variation.

[0016] FIG. 1 shows an example of a lens with a diffractive pattern built into the lens edge in a radius range of 2-6 mm. As shown by the lens power in FIG. 2B, the total lens power is -9D, the refractive power is -3D, and the diffractive power is -6D. As shown, two-thirds of the lens power is contributed by the diffractive pattern. FIG. 2A shows the designed surface shape of the diffractive pattern.

[0017] FIG. 3 shows the optical performance of the designed lens with a lens power of −3D. In general, the overall theoretical diffraction efficiency is about 99%. FIG. 3A and FIG. 3B show the through-focus MTF and visual acuity (VA) of the designed lens with pupil diameters of 3.0 mm, 4.5 mm, and 6.0 mm, respectively (without accommodation of the patient's eye). A visual performance of about 20 / 20 was observed in the patient with a refractive error of −3D.

[0018] FIG. 4 shows the uneven distribution of refractive power and diffractive power across the contact OZ area. As an illustrative example, a single vision lens has a SKU / power of -3D. In one embodiment of the design, the distribution of diffractive power and refractive power is listed in the table of FIG. 4B. As an example, within the OZ area, the diffractive power is typically not distributed uniformly across the entire OZ area. As shown in FIG. 4A, at the OZ center, the refractive power dominates the total lens power, while at the edge of the contact lens, the diffractive power plays a major role. The total lens power was maintained across the entire OZ zone.

[0019] 5 is a plot of OZ diameter versus optical power by OZ diameter for a conventional refractive optical design (straight line) and a hybrid diffractive and refractive lens design (dotted line). As shown, the hybrid diffractive and refractive lens design of the present disclosure minimizes the variation in OZ diameter across the power / SKU spectrum.

[0020] 6 shows the center thickness of the lens versus optical power for a conventional refractive optical design (straight line) and a hybrid diffractive and refractive lens design (dotted line). As shown, the hybrid diffractive and refractive lens design of the present disclosure minimizes the variation in center thickness across the spectrum of optical powers / SKUs.

[0021] In conventional designs, in addition to the variation in center thickness, the thickness of the lens optic zone edge also varies depending on the lens power / SKU. Figure 7 shows the thickness profile of lenses with different powers. The x-axis is the lens radius and the y-axis is the thickness. Clearly, the negative lenses have a thicker OZ edge thickness and the positive lenses have a thinner OZ edge thickness. In this design, the -3D lens has a very smooth transition from the optic zone to the peripheral mechanical zone, as indicated by the arrows. Due to the proposed combined diffractive / refractive lens design, the lens thickness variation profile can be uniform or substantially similar (or the same or similar to the example -3D refractive lens shown to have desirable comfort) across SKUs. In another embodiment, the diffractive power can also be partially distributed across the lens surface. As an example, the diffractive pattern may cover only the lens peripheral region. As shown in Figure 8, the inner radius of the diffractive pattern is set to R diff and an inner radius of zero would result in a lens OZ with a uniform lens thickness. If the diffraction pattern only partially covers the lens surface (e.g., in the circumferential direction), the thickness of the lens edge will vary, although the amount of variation will still be less than in a lens design without a diffraction pattern.

[0022] Figure 8 shows a schematic of lens edge thickness versus lens power / SKU. If the diffractive power covers the entire lens surface, the edge thickness can be designed uniformly across SKUs. If the diffractive pattern only partially covers the lens surface, there will be variation in edge thickness (as shown by the dashed lines).

[0023] Aspects: In various aspects, the present disclosure may relate to one or more of the following aspects.

[0024] Aspect 1. An ophthalmic lens comprising: a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power; and a diffractive structure disposed within the optical zone, adjacent to the optical zone, or both, the diffractive structure exhibiting a second refractive power, wherein the ophthalmic lens is associated with a first target SKU refractive power, and at least the diffractive structure is configured such that a diameter of the optical zone of the ophthalmic lens and a diameter of the optical zone of a comparative lens are at least 7.0 mm, and the comparative lens is substantially similar to the ophthalmic lens, but the comparative lens is associated with a second target SKU refractive power different from the first target SKU refractive power.

[0025] Substantially similar may be defined as including or consisting essentially of the same basic components of the subject lens. As an example, the comparison lens may comprise or consist essentially of a body including an optic zone and a peripheral zone disposed adjacent to the optic zone, the optic zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed within the optic zone, the diffractive structure exhibiting a refractive power, and the ophthalmic lens is associated with a target SKU power (which may be different from the first target SKU power of the subject lens).

[0026] Minimizing may be defined as limiting or constraining a desired configuration to meet a threshold variation from other configurations defined by other lens characteristics including, but not limited to, lens comfort, lens handling, etc. As an example, with a mixed refractive / diffractive design, lenses across SKUs may have the same OZ as a -3D refractive only lens, which may be, for example, the largest OZ for the design across SKUs. The thickness variation profile may be the same as a -3D refractive only lens.

[0027] Aspect 2. The ophthalmic lens according to Aspect 1, wherein the first target SKU refractive power is -10D to 10D.

[0028] Aspect 3. The ophthalmic lens according to aspect 1, wherein the second target SKU refractive power is -10D to 10D.

[0029] Aspect 4. The ophthalmic lens of Aspect 1, wherein the first target SKU refractive power is based on the first refractive power and the second refractive power.

[0030] Embodiment 5. The ophthalmic lens of embodiment 1, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone.

[0031] Embodiment 6. The ophthalmic lens of embodiment 1, wherein the diffractive structure is disposed adjacent to the peripheral zone.

[0032] Embodiment 7. The ophthalmic lens of embodiment 1, wherein the diffractive structures are disposed around the periphery of the optical zone.

[0033] Embodiment 8. An ophthalmic lens as described in embodiment 1, wherein the diffractive structures are circumferentially disposed around at least a portion of the optical zone.

[0034] Aspect 9. An ophthalmic lens as described in Aspect 1, wherein the diffractive structures are circumferentially disposed around the optical zone at a predetermined radius from the center of the optical zone.

[0035] Aspect 10. An ophthalmic lens as described in Aspect 1, wherein the diffractive structure comprises mechanical features configured to exhibit optical diffraction of incident light.

[0036] Aspect 11. An ophthalmic lens according to Aspect 1, wherein the diameter of the optical zone of the ophthalmic lens and the diameter of the optical zone of the comparative lens are between 7.0 mm and 9.5 mm.

[0037] Aspect 12. An ophthalmic lens according to Aspect 1, wherein the diameter of the optical zone of the ophthalmic lens and the diameter of the optical zone of the comparative lens are between 7.0 mm and 9.5 mm.

[0038] Aspect 13. An ophthalmic lens comprising: a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power; and a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power, wherein at least the diffractive structure minimizes variation between a thickness of a central portion of the optical zone of the ophthalmic lens and a thickness of a central portion of the optical zone of a comparative lens, the comparative lens being substantially similar to the ophthalmic lens, except that the comparative lens has a refractive structure exhibiting a third refractive power different from the first refractive power.

[0039] Substantially similar may be defined as including or consisting essentially of the same basic components of the target lens. As an example, the comparison lens may comprise or consist essentially of a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed adjacent to or within the optical zone (or both), the diffractive structure exhibiting a refractive power, and the ophthalmic lens is associated with a target SKU power (which may be different from the first target SKU power of the target lens).

[0040] Minimizing may be defined as limiting or constraining a desired configuration to meet a threshold variation from other configurations defined by other lens characteristics including, but not limited to, lens comfort, lens handling, etc. As an example, with a mixed refractive / diffractive design, lenses across an SKU may have a lens thickness at the center of the OZ that is within a threshold tolerance (e.g., 0.25 mm, 0.20 mm, 0.15 mm, 0.10 mm, etc.).

[0041] Embodiment 14. An ophthalmic lens according to embodiment 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.25 mm.

[0042] Embodiment 15. An ophthalmic lens according to embodiment 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.20 mm.

[0043] Embodiment 16. An ophthalmic lens according to embodiment 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.15 mm.

[0044] Embodiment 17. An ophthalmic lens according to embodiment 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.10 mm.

[0045] Aspect 18. The ophthalmic lens according to aspect 13, wherein the first refractive power is -10D to 10D.

[0046] Aspect 19. The ophthalmic lens according to aspect 13, wherein the second refractive power is -10D to 10D.

[0047] Aspect 20. An ophthalmic lens according to aspect 13, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone.

[0048] Aspect 21. An ophthalmic lens according to Aspect 13, wherein the diffractive structure is disposed adjacent to the peripheral zone.

[0049] Aspect 22. An ophthalmic lens according to aspect 13, wherein the diffractive structures are disposed around the periphery of the optical zone.

[0050] Aspect 23. An ophthalmic lens as described in Aspect 13, wherein the diffractive structures are circumferentially disposed around at least a portion of the optical zone.

[0051] Aspect 24. An ophthalmic lens as described in Aspect 13, wherein the diffractive structures are arranged circumferentially around the optical zone at a predetermined radius from the center of the optical zone.

[0052] Aspect 25. An ophthalmic lens as described in Aspect 13, wherein the diffractive structure includes mechanical features configured to exhibit optical diffraction of incident light.

[0053] Aspect 26. An ophthalmic lens, comprising: a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power; and a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power, wherein at least the diffractive structure is configured to minimize a root mean square (RMS) variation between a thickness variation profile of the ophthalmic lens and a thickness variation profile of a comparative lens, the comparative lens being substantially similar to the ophthalmic lens, except that the comparative lens has a refractive structure exhibiting a third refractive power different from the first refractive power.

[0054] Substantially similar may be defined as including or consisting essentially of the same basic components of the target lens. As an example, the comparative lens may comprise or consist essentially of a body including an optical zone and a peripheral zone disposed adjacent to or within the optical zone (or both), the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed adjacent to or within the optical zone (or both), the diffractive structure exhibiting a refractive power, and the ophthalmic lens is associated with a target SKU power (which may be different from the first target SKU power of the target lens).

[0055] Minimizing may be defined as limiting or constraining a desired configuration to meet a threshold variation from other configurations defined by other lens characteristics including, but not limited to, lens comfort, lens handling, etc. As an example, with a mixed refractive / diffractive design, lenses across an SKU may have a variation in RMS lens thickness along the OZ that is within a threshold tolerance (e.g., 0.25mm, 0.20mm, 0.15mm, 0.10mm, etc.).

[0056] Aspect 27. An ophthalmic lens according to aspect 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparison lens is less than 0.25 mm.

[0057] Aspect 28. An ophthalmic lens according to aspect 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparative lens is less than 0.20 mm.

[0058] Aspect 29. An ophthalmic lens according to aspect 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparative lens is less than 0.15 mm.

[0059] Aspect 30. An ophthalmic lens according to aspect 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparison lens is less than 0.10 mm.

[0060] Aspect 31. The ophthalmic lens according to aspect 26, wherein the first refractive power is between -10D and 10D.

[0061] Aspect 32. The ophthalmic lens according to aspect 26, wherein the second refractive power is -10D to 10D.

[0062] Aspect 33. An ophthalmic lens as described in Aspect 26, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone.

[0063] Embodiment 34. An ophthalmic lens according to embodiment 26, wherein the diffractive structure is disposed adjacent to the peripheral zone.

[0064] Aspect 35. An ophthalmic lens as described in Aspect 26, wherein the diffractive structures are disposed around the outer periphery of the optical zone.

[0065] Aspect 36. An ophthalmic lens as described in Aspect 26, wherein the diffractive structures are circumferentially disposed around at least a portion of the optical zone.

[0066] Aspect 37. An ophthalmic lens as described in Aspect 26, wherein the diffractive structures are disposed circumferentially around the optical zone at a predetermined radius from the center of the optical zone.

[0067] Aspect 38. An ophthalmic lens as described in Aspect 26, wherein the diffractive structure includes mechanical features configured to exhibit optical diffraction of incident light.

[0068] Aspect 39. An ophthalmic lens comprising: a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power; and a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power, wherein at least the diffractive structure minimizes variation between the optical zone edge bond thickness of the ophthalmic lens and the optical zone edge bond thickness of a comparative lens, the comparative lens being substantially similar to the ophthalmic lens, but the comparative lens having a refractive structure exhibiting a third refractive power different from the first refractive power.

[0069] Substantially similar may be defined as including or consisting essentially of the same basic components of the target lens. As an example, the comparison lens may comprise or consist essentially of a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed adjacent to or within the optical zone (or both), the diffractive structure exhibiting a refractive power, and the ophthalmic lens is associated with a target SKU power (which may be different from the first target SKU power of the target lens).

[0070] Minimizing may be defined as limiting or constraining a desired configuration to meet a threshold variation from other configurations defined by other lens characteristics including, but not limited to, lens comfort, lens handling, etc. As an example, with a mixed refractive / diffractive design, lenses across an SKU may have a lens thickness at the optic zone edge junction that is within a threshold tolerance (e.g., 0.035 mm, 0.030 mm, etc.).

[0071] Aspect 40. An ophthalmic lens according to aspect 39, wherein the variation between the optical zone edge bond thickness of the ophthalmic lens and the optical zone edge bond thickness of the comparison lens is less than 0.035 mm.

[0072] Aspect 41. An ophthalmic lens according to aspect 39, wherein the variation between the optical zone edge bond thickness of the ophthalmic lens and the optical zone edge bond thickness of the comparison lens is less than 0.030 mm.

[0073] Embodiment 42. The ophthalmic lens according to embodiment 39, wherein the first refractive power is between -10D and 10D.

[0074] Embodiment 43. The ophthalmic lens according to embodiment 39, wherein the second refractive power is between -10D and 10D.

[0075] Embodiment 44. An ophthalmic lens as described in embodiment 39, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone.

[0076] Embodiment 45. An ophthalmic lens as described in embodiment 39, wherein the diffractive structure is disposed adjacent to the peripheral zone.

[0077] Embodiment 46. An ophthalmic lens as described in embodiment 39, wherein the diffractive structures are disposed around the outer periphery of the optical zone.

[0078] Embodiment 47. An ophthalmic lens as described in embodiment 39, wherein the diffractive structures are circumferentially disposed around at least a portion of the optical zone.

[0079] Aspect 48. An ophthalmic lens as described in Aspect 39, wherein the diffractive structures are arranged circumferentially around the optical zone at a predetermined radius from the center of the optical zone.

[0080] Aspect 49. An ophthalmic lens as described in Aspect 39, wherein the diffractive structure includes mechanical features configured to exhibit optical diffraction of incident light.

[0081] A method for producing an ophthalmic lens according to embodiment 1.

[0082] A method for producing the ophthalmic lens according to embodiment 13.

[0083] A method for producing the ophthalmic lens according to embodiment 26.

[0084] A method for producing the ophthalmic lens of embodiment 39.

[0085] Aspect 54: An ophthalmic lens comprising: a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power; and a diffractive structure disposed adjacent to and / or within the optical zone, the diffractive structure exhibiting a second refractive power, wherein the ophthalmic lens is associated with a first target SKU refractive power, and at least the diffractive structure is configured to minimize variation between one or more of a central thickness of the optical zone of the ophthalmic lens and a central thickness of the optical zone of a comparative lens, a thickness variation profile of the ophthalmic lens and a thickness variation profile of the comparative lens, or a profile / thickness of an optical zone edge junction of the ophthalmic lens and a profile / thickness of an optical zone edge junction of the comparative lens, wherein the comparative lens is substantially similar to the ophthalmic lens, but the comparative lens is associated with a second target SKU refractive power that is different from the first target SKU refractive power.

[0086] Substantially similar may be defined as including or consisting essentially of the same basic components of the target lens. As an example, the comparison lens may comprise or consist essentially of a body including an optical zone and a peripheral zone disposed adjacent to the optical zone, the optical zone including a refractive structure exhibiting a first refractive power, and a diffractive structure disposed adjacent to or within the optical zone (or both), the diffractive structure exhibiting a refractive power, and the ophthalmic lens is associated with a target SKU power (which may be different from the first target SKU power of the target lens).

[0087] Minimizing may be defined as limiting or constraining a desired configuration to meet a threshold variation from other configurations defined by other lens characteristics including, but not limited to, lens comfort, lens handling, etc. As an example, in a mixed refractive / diffractive design, lenses across SKUs may have the same OZ as a -3D refractive only lens, e.g., the largest OZ in the design across SKUs. The thickness variation profile may be the same as a -3D refractive only lens.

[0088] Aspect 55. An ophthalmic lens according to aspect 54, wherein the first target SKU refractive power is between -10D and 10D.

[0089] Aspect 56. An ophthalmic lens according to aspect 54, wherein the second target SKU refractive power is between -10D and 10D.

[0090] Aspect 57. An ophthalmic lens as described in Aspect 54, wherein the first target SKU refractive power is based on the first refractive power and the second refractive power.

[0091] Aspect 58. An ophthalmic lens as described in Aspect 54, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone.

[0092] Embodiment 59. An ophthalmic lens as described in embodiment 54, wherein the diffractive structure is disposed adjacent to the peripheral zone.

[0093] Embodiment 60. An ophthalmic lens as described in embodiment 54, wherein the diffractive structures are disposed around the outer periphery of the optical zone.

[0094] Embodiment 61. An ophthalmic lens as described in embodiment 54, wherein the diffractive structures are circumferentially disposed around at least a portion of the optical zone.

[0095] Embodiment 62. An ophthalmic lens as described in embodiment 54, wherein the diffractive structures are arranged circumferentially around the optical zone at a predetermined radius from the center of the optical zone.

[0096] Aspect 63. An ophthalmic lens as described in Aspect 54, wherein the diffractive structure includes mechanical features configured to exhibit optical diffraction of incident light.

[0097] While the embodiments shown and described herein are considered to be the most practical and preferred embodiments, it will be apparent to one skilled in the art that variations from the specific designs and methods shown and disclosed herein will be obvious to those skilled in the art and may be used without departing from the spirit and scope of the present invention. The present disclosure is not limited to the specific configurations described and illustrated, but should be constructed to be consistent with all modifications that may fall within the scope of the appended claims. Furthermore, the repeated use of the term "comprising" may include "consisting essentially of" and / or "consisting of," as support is found herein for such terms by use of the term "comprising."

[0098] [Embodiment] (1) An ophthalmic lens, a body including an optic zone and a peripheral zone disposed adjacent to the optic zone, the optic zone including a refractive structure exhibiting a first optical power; a diffractive structure disposed within the optic zone, adjacent to the optic zone, or both, the diffractive structure exhibiting a second refractive power; the ophthalmic lens is associated with a first target SKU power; An ophthalmic lens, wherein at least the diffractive structure is configured such that the diameter of the optical zone of the ophthalmic lens and the diameter of the optical zone of a comparison lens are at least 7.0 mm, and the comparison lens is substantially similar to the ophthalmic lens, but the comparison lens is associated with a second target SKU refractive power that is different from the first target SKU refractive power. (2) The ophthalmic lens according to embodiment 1, wherein the first target SKU refractive power is -10D to 10D. (3) The ophthalmic lens according to embodiment 1, wherein the second target SKU refractive power is -10D to 10D. (4) An ophthalmic lens as described in embodiment 1, wherein the first target SKU refractive power is based on the first refractive power and the second refractive power. (5) An ophthalmic lens as described in embodiment 1, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone.

[0099] (6) An ophthalmic lens as described in embodiment 1, wherein the diffractive structure is disposed adjacent to the peripheral zone. (7) An ophthalmic lens as described in embodiment 1, wherein the diffractive structures are disposed around the periphery of the optical zone. (8) An ophthalmic lens as described in embodiment 1, wherein the diffractive structures are disposed circumferentially around at least a portion of the optical zone. (9) An ophthalmic lens as described in embodiment 1, wherein the diffractive structures are arranged circumferentially around the optical zone at a predetermined radius from the center of the optical zone. (10) An ophthalmic lens as described in embodiment 1, wherein the diffractive structure includes a mechanical feature configured to exhibit optical diffraction of incident light.

[0100] (11) The ophthalmic lens according to embodiment 1, wherein the diameter of the optical zone of the ophthalmic lens and the diameter of the optical zone of the comparative lens are between 7.0 mm and 9.5 mm. (12) The ophthalmic lens according to embodiment 1, wherein the diameter of the optical zone of the ophthalmic lens and the diameter of the optical zone of the comparative lens are between 7.0 mm and 9.5 mm. (13) An ophthalmic lens, a body including an optic zone and a peripheral zone disposed adjacent to the optic zone, the optic zone including a refractive structure exhibiting a first optical power; a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power; An ophthalmic lens, wherein at least the diffractive structure minimizes the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of a comparison lens, the comparison lens being substantially similar to the ophthalmic lens, except that the comparison lens has a refractive structure that exhibits a third refractive power different from the first refractive power. (14) An ophthalmic lens as described in embodiment 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.25 mm. (15) The ophthalmic lens of claim 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.20 mm.

[0101] (16) The ophthalmic lens of claim 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.15 mm. (17) The ophthalmic lens of claim 13, wherein the variation between the central thickness of the optical zone of the ophthalmic lens and the central thickness of the optical zone of the comparison lens is less than 0.10 mm. (18) The ophthalmic lens according to embodiment 13, wherein the first refractive power is -10D to 10D. (19) The ophthalmic lens according to embodiment 13, wherein the second refractive power is -10D to 10D. (20) An ophthalmic lens as described in embodiment 13, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone.

[0102] (21) An ophthalmic lens as described in embodiment 13, wherein the diffractive structure is disposed adjacent to the peripheral zone. (22) The ophthalmic lens of embodiment 13, wherein the diffractive structures are disposed around the periphery of the optical zone. (23) An ophthalmic lens as described in embodiment 13, wherein the diffractive structures are disposed circumferentially around at least a portion of the optical zone. (24) An ophthalmic lens as described in embodiment 13, wherein the diffractive structures are disposed circumferentially around the optical zone at a predetermined radius from the center of the optical zone. (25) An ophthalmic lens as described in embodiment 13, wherein the diffractive structure includes a mechanical feature configured to exhibit optical diffraction of incident light.

[0103] (26) An ophthalmic lens, a body including an optic zone and a peripheral zone disposed adjacent to the optic zone, the optic zone including a refractive structure exhibiting a first optical power; a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power; An ophthalmic lens, wherein at least the diffractive structure is configured to minimize the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of a comparison lens, the comparison lens being substantially similar to the ophthalmic lens, except that the comparison lens has a refractive structure that exhibits a third refractive power different from the first refractive power. (27) The ophthalmic lens of embodiment 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparative lens is less than 0.25 mm. (28) The ophthalmic lens of embodiment 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparative lens is less than 0.20 mm. (29) The ophthalmic lens of embodiment 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparative lens is less than 0.15 mm. (30) The ophthalmic lens of embodiment 26, wherein the root mean square (RMS) variation between the thickness variation profile of the ophthalmic lens and the thickness variation profile of the comparative lens is less than 0.10 mm.

[0104] (31) The ophthalmic lens according to embodiment 26, wherein the first refractive power is -10D to 10D. (32) The ophthalmic lens according to embodiment 26, wherein the second refractive power is -10D to 10D. (33) The ophthalmic lens of embodiment 26, wherein the diffractive structures are disposed adjacent to the periphery of the optical zone. (34) An ophthalmic lens as described in embodiment 26, wherein the diffractive structure is disposed adjacent to the peripheral zone. (35) The ophthalmic lens of embodiment 26, wherein the diffractive structures are disposed around the periphery of the optical zone.

[0105] (36) The ophthalmic lens of embodiment 26, wherein the diffractive structures are circumferentially disposed around at least a portion of the optical zone. (37) An ophthalmic lens as described in embodiment 26, wherein the diffractive structures are disposed circumferentially around the optical zone at a predetermined radius from the center of the optical zone. (38) The ophthalmic lens of embodiment 26, wherein the diffractive structure comprises a mechanical feature configured to exhibit optical diffraction of incident light. (39) An ophthalmic lens comprising: a body including an optic zone and a peripheral zone disposed adjacent to the optic zone, the optic zone including a refractive structure exhibiting a first optical power; a diffractive structure disposed adjacent to or within the optical zone, the diffractive structure exhibiting a second refractive power; An ophthalmic lens, wherein at least the diffractive structure minimizes variation between the optical zone edge bond thickness of the ophthalmic lens and the optical zone edge bond thickness of a comparison lens, the comparison lens being substantially similar to the ophthalmic lens, except that the comparison lens has a refractive structure that exhibits a third refractive power different from the first refractive power. (40) An ophthalmic lens as described in embodiment 39, wherein the variation between the optical zone edge bond thickness of the ophthalmic lens and the optical zone edge bond thickness of the comparison lens is less than 0.035 mm.

[0106] (41) An ophthalmic lens as described in embodiment 39, wherein the variation between the optical zone edge bond thickness of the ophthalmic lens and the optical zone edge bond thickness of the comparison lens is less than 0.030 mm. (42) The ophthalmic lens according to embodiment 39, wherein the first refractive power is -10D to 10D. (43) The ophthalmic lens according to embodiment 39, wherein the second refractive power is -10D to 10D. (44) An ophthalmic lens as described in embodiment 39, wherein the diffractive structure is disposed adjacent to the periphery of the optical zone. (45) An ophthalmic lens as described in embodiment 39, wherein the diffractive structure is disposed adjacent to the peripheral zone.

[0107] (46) An ophthalmic lens as described in embodiment 39, wherein the diffractive structures are disposed around the periphery of the optical zone. (47) An ophthalmic lens as described in embodiment 39, wherein the diffractive structures are disposed circumferentially around at least a portion of the optical zone. (48) An ophthalmic lens as described in embodiment 39, wherein the diffractive structures are disposed circumferentially around the optical zone at a predetermined radius from the center of the optical zone. (49) An ophthalmic lens as described in embodiment 39, wherein the diffractive structure includes a mechanical feature configured to exhibit optical diffraction of incident light. (50) A method for producing the ophthalmic lens according to embodiment 1.

[0108] (51) A method for producing the ophthalmic lens according to embodiment 13. (52) A method for producing the ophthalmic lens described in embodiment 26. (53) A method for producing the ophthalmic lens described in embodiment 39.

Claims

1. 1. A set of soft contact lenses adapted to be placed against the eyes of a wearer, comprising: a plurality of soft contact lenses providing a full spherical power correction ranging from a negative diopter correction to a positive diopter correction, each of said soft contact lenses in said set comprising: The front and back, a body including an optic zone and a peripheral zone disposed adjacent to the optic zone, the optic zone including a refractive structure that exhibits a first refractive power for all of the soft contact lenses in the set; For a soft contact lens having a total refractive power other than the first refractive power, the soft contact lens further comprises a diffractive structure disposed in the peripheral zone of the surface, the diffractive structure exhibiting a second refractive power; A set of soft contact lenses, wherein said first refractive power and said second refractive power combine to produce said full spherical power correction.

2. 2. The set of soft contact lenses of claim 1, wherein said range of negative to positive diopter correction is at least -9 diopters to +4 diopters.

3. 10. The set of soft contact lenses of claim 1, wherein the diameter of the optic zone is between 7 and 9 mm.

4. The set of soft contact lenses of claim 1 , wherein the refractive structures and the diffractive structures are both disposed on the surface.

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