WO2013093146A1 - Procedimiento de diseño y de fabricación de una lente oftálmica monofocal y lente correspondiente - Google Patents
Procedimiento de diseño y de fabricación de una lente oftálmica monofocal y lente correspondiente Download PDFInfo
- Publication number
- WO2013093146A1 WO2013093146A1 PCT/ES2012/070849 ES2012070849W WO2013093146A1 WO 2013093146 A1 WO2013093146 A1 WO 2013093146A1 ES 2012070849 W ES2012070849 W ES 2012070849W WO 2013093146 A1 WO2013093146 A1 WO 2013093146A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- value
- coefficients
- lens
- ophthalmic lens
- values
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 238000004364 calculation method Methods 0.000 claims abstract description 4
- 201000009310 astigmatism Diseases 0.000 claims description 21
- 238000005457 optimization Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 2
- 230000004075 alteration Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 238000012804 iterative process Methods 0.000 description 2
- 238000010206 sensitivity analysis Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/024—Methods of designing ophthalmic lenses
- G02C7/028—Special mathematical design techniques
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/024—Methods of designing ophthalmic lenses
Definitions
- the invention relates to monofocal lenses, more commonly known as spherocylindrical (or spherical) lenses. These lenses correspond to optical elements of constant power throughout the surface that are generally represented in ophthalmic optics by the values of sphere, cylinder and axis of the cylinder. Specifically, the invention relates to processes for the design and manufacture of a monofocal ophthalmic lens. The invention also relates to monofocal ophthalmic lenses defined analytically by a certain function.
- the coefficients are calculated by an iterative calculation comprising the following steps: [a] set a value for the refractive index of the ophthalmic lens and for the base curve that will be used to manufacture the ophthalmic lens,
- [e] calculate the value of a merit function of the type: where m ⁇ is the value of the optical property at a particular viewing angle ⁇ with respect to the optical axis of the lens, it is already a weighting value,
- the merit function includes the value of 30 and oblique astigmatism and advantageously the value aj for oblique astigmatism value is between 0.8 and 0.98.
- the merit function includes the value of the field curvature at 30 e and, advantageously, the value a for the value of the field curvature is between 0.02 and 0.2.
- the merit function includes the two previous optical properties (oblique astigmatism and field curvature). Indeed, the remaining aberrations usually present in the lenses are, in general, a Composition of these two. Therefore, the merit function is already reflecting, in a direct or indirect way, any aberration of interest.
- the surface designed by the method according to the invention could be both the concave and the convex surface, but it is preferable that it be the concave surface of the lens.
- the coefficients a ⁇ can be simplified, specifically it can be made equal to 0, 2 equal to the radius of curvature in the center of the surface, with a negative sign, and 5 equal to the radius of curvature in the center of the surface. Indeed, with these conditions it is ensured that, on the one hand, the function passes through the point (0, 0, 0) and, on the other hand, that the lens has the desired power.
- each of the coefficients of the analytical function has a value that is between +/- 30% of the corresponding nominal value obtained from the optimization.
- the process according to the invention allows the coefficients to be calculated with great precision, however, small deviations from the optimal values give results almost equally satisfactory. This has been demonstrated through a sensitivity analysis, in which some variations in the coefficients obtained ( ⁇ 30%) have been introduced and the differences in height (z) of the new surfaces with respect to the original ones have been analyzed as well as medium power and astigmatism isolineas obtained by ray tracing. Different combinations of coefficient variations have been studied, to which both a reduction and an increase in the coefficients have been applied with respect to the exact values (those obtained from the iterative process).
- the cases that have been studied are: reduction or increase of the hyperbola coefficients (to 3 , to 4 ), reduction or increase of the exponential coefficients (to 6 , to 7 , to 8 ), reduction or increase of the even coefficients (a 4 , a 6 , a 8 ), reduction or increase of odd coefficients (a 3 , a 7 ), and a reduction or increase of all coefficients (a 3 , a 4 , a 6 , a 7 , a 8 ).
- This sensitivity analysis has been done by setting the values of the coefficients aa 2 and 5 , thus fixing the center of the surface and the curvature at the center of the surface, as discussed above. For this, different graduations have been chosen.
- the values of a ⁇ are not calculated in the previous procedure but can be chosen directly from pre-established ranges.
- 6 have a value between -2x10 "8 and 5x10" 8 mm "4
- 7 have a value between -2x10" 8 and 1, 2x10 "7 mm” 4
- a subject of the invention is also a method of manufacturing a monofocal ophthalmic lens, characterized in that it comprises a machining stage of an ophthalmic lens surface where the surface is defined by an analytical function of the type:
- a subject of the invention is also a monofocal ophthalmic lens, characterized in that it has a surface defined by an analytical function of the type:
- the coefficients are the coefficients obtainable by the design procedure according to the invention.
- Fig. 1 four comparisons of cross sections (z coordinate) of lens surfaces defined by a purely hyperbolic surface, a purely exponential surface and the combination of both.
- Fig. 2 a comparison of cross sections of spherical lens surfaces and a surface according to the invention.
- Fig. 3 a comparison of cross sections of aspherical lens surfaces and a surface according to the invention.
- Fig. 4 a table with first values of the coefficients a - to 8 .
- Fig. 5 maps of average power (a) and astigmatism (b), every 0.25D, up to 30 and obtained with an analytical surface with the coefficients of Fig. 4.
- Fig. 6, a table with a few second values of the coefficients a ⁇ - a 8 .
- Fig. 7 maps of average power (a) and astigmatism (b), every 0.25D, up to 30 and obtained with an analytical surface with the coefficients of Fig. 6.
- Fig. 8 a table with third values of the coefficients a - to 8 .
- Fig. 9 maps of average power (a) and astigmatism (b), every 0.10D, up to 30 and obtained with an analytical surface with the coefficients of Fig. 8.
- Fig. 10 a table with fourth values of the coefficients ai - a 8 .
- Fig. 1 comparing maps of astigmatism and average power, every 0.25D, up to 30 and obtained with a spherical surface ((a) and (c)) and with an analytical surface with the coefficients of Fig. 10 ( (b) and (d)).
- Fig. 12 a table with about fifth values of the coefficients ai - a 8 .
- Fig. 13 comparison of astigmatism and average power maps, every 0.25D, up to 30 and obtained with a spherical surface ((a) and (c)) and with an analytical surface with the coefficients of Fig. 12 (( b) and (d)).
- Fig. 14 a table with some sixth values of the coefficients a - to 8 .
- Fig. 15 comparing maps of astigmatism and average power, every 0.05D, up to 30 and obtained with a spherical surface ((a) and (c)) and with an analytical surface with the coefficients of Fig. 14 (( b) and (d)).
- Fig. 16 a table with about seventh values of the coefficients a ⁇ - a 8 .
- Fig. 17 comparative maps of astigmatism and average power, every 0.10D, up to 30 and obtained with a spherical surface ((a) and (c)) and with an analytical surface with the coefficients of Fig. 16 (( b) and (d)).
- Fig. 18 graph of variation of the coefficient to 7 as a function of the sphere and cylinder values for index 1, 6.
- Fig. 20 comparative graph of coefficient variation to 8 as a function of sphere values, for two different indices.
- Fig. 21 comparative graph of coefficient variation to 8 as a function of cylinder values, for two different indices.
- Fig. 1 in the graphs (a) to (d) it is shown, in a schematic way, the contribution made to a surface according to the invention each of the hyperbolic and exponential components.
- the solid line represents the cross section of the lens surface obtained in accordance with the invention
- the dashed line shows the hyperbolic component
- the dotted line shows the exponential component.
- the hyperbolic component is the dominant component in the central part of the lens
- the exponential component allows changes (which may become substantial) to be introduced in the perimeter part of the lens.
- the combination of both components allows generating surfaces that could not be obtained with one of the components in isolation.
- the curves corresponding to the four figures have been calculated with the following starting data: - Fig.
- merit function a function of the type: which includes the value of oblique astigmatism at 30 e , weighted with a value of 0.9, and the value of the field curvature at 30 e , weighted with a value of 0.1.
- Fig. 1 b sphere: + 8D, cylinder: -4D, base curve: 67,833 mm, index: 1, 6, merit function: the same as in Fig. 1 a.
- Fig. 1 c sphere: -6D, cylinder: 0D, base curve: 498 mm, index: 1, 6, merit function: the same as in Fig. 1 a.
- Fig. 1 d sphere: -6D, cylinder: -4D, base curve: 498 mm, index: 1, 6, merit function: the same as in Fig. 1 a.
- FIG 2 the profiles of spheres with a plurality of radii of curvature (dashed lines) superimposed on the profile of a lens according to the invention, calculated from the following starting data are shown: sphere: + 8D, cylinder: -2.0D, base curve: 67.83 mm, index: 1, 6, merit function: the same as in Fig. 1 a.
- Figure 3 the profiles of some spheres with a plurality of asphericities for a given radius of curvature (dashed lines) superimposed on the profile of the lens according to the invention of Figure 2 are shown.
- none of The spherical or aspherical curves can be superimposed on the surface curve according to the invention. Therefore, the surface according to the invention can offer improved optical properties with respect to spherical or aspherical lenses.
- An optimization was carried out with a merit function of the type: which includes the value of oblique astigmatism at 30 e , weighted with a value of 0.9, and the value of the field curvature at 30 e , weighted with a value of 0.1.
- Fig. 5 the maps of average power (a) and astigmatism (b) are shown up to 30 and obtained with an analytical surface with the coefficients of Fig. 4.
- FIG. 10 Examples of base curve changes are shown in Figures 10 to 17.
- a spherical lens is compared with a lens with a surface according to the invention.
- the upper maps are astigmatism maps ((a) and (b)), and the lower maps are medium power maps ((c) and (d)).
- the maps on the left are the spherical lens maps ((a) and (c)) while the maps on the right are those that a lens with a surface according to the invention, obtained from the coefficients of the Tables 10, 12, 14 and 16, respectively. In all cases the same merit function has been used as in the previous examples.
- a variation graph of the coefficient at 7 is shown in Fig. 18 as a function of the sphere (X axis) and cylinder (Y axis) values, in a case where the base curve is 52.3 mm and the refractive index n is 1, 7.
- the same merit function of the previous examples has been used to calculate a 7 .
- FIG. 19 A variation graph of the coefficient at 8 in function of the sphere values (X axis) is shown in Fig. 19, for various base curves.
- the refractive index n is 1, 7 and the cylinder value is -2.0D.
- n 1
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Eyeglasses (AREA)
- Lenses (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12822976.2A EP2799914A1 (en) | 2011-12-19 | 2012-12-05 | Method for designing and manufacturing a monofocal ophtalmic lens and corresponding lens |
CA2858995A CA2858995A1 (en) | 2011-12-19 | 2012-12-05 | Method for designing and manufacturing a monofocal ophtalmic lens and corresponding lens |
AU2012356705A AU2012356705A1 (en) | 2011-12-19 | 2012-12-05 | Method for designing and manufacturing a monofocal ophthalmic lens and corresponding lens |
CN201280062754.9A CN104054010A (zh) | 2011-12-19 | 2012-12-05 | 用于设计和制造单焦点眼镜镜片的方法与对应镜片 |
MX2014007353A MX2014007353A (es) | 2011-12-19 | 2012-12-05 | Procedimiento de diseño y de fabricacion de una lente oftalmica monofocal y lente correspondiente. |
IL233214A IL233214A0 (en) | 2011-12-19 | 2014-06-18 | A method for designing and manufacturing monofocal eye lenses and parallel lenses |
ECIEPI20149541A ECSP14009541A (es) | 2011-12-19 | 2014-07-16 | Procedimiento de diseño y de fabricación de una lente oftálmica monofocal y lente correspondiente |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201132048A ES2380979B1 (es) | 2011-12-19 | 2011-12-19 | "Procedimiento de diseño y de fabricación de una lente oftálmica monofocal y lente correspondiente" |
ESP201132048 | 2011-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013093146A1 true WO2013093146A1 (es) | 2013-06-27 |
Family
ID=46018201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2012/070849 WO2013093146A1 (es) | 2011-12-19 | 2012-12-05 | Procedimiento de diseño y de fabricación de una lente oftálmica monofocal y lente correspondiente |
Country Status (12)
Country | Link |
---|---|
US (1) | US9170433B2 (es) |
EP (1) | EP2799914A1 (es) |
CN (1) | CN104054010A (es) |
AU (1) | AU2012356705A1 (es) |
CA (1) | CA2858995A1 (es) |
CO (1) | CO7010795A2 (es) |
EC (1) | ECSP14009541A (es) |
ES (1) | ES2380979B1 (es) |
IL (1) | IL233214A0 (es) |
MX (1) | MX2014007353A (es) |
PE (1) | PE20142218A1 (es) |
WO (1) | WO2013093146A1 (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX344975B (es) * | 2012-11-14 | 2017-01-12 | Essilor Int | Metodo para determinar la viabilidad de una lente oftalmica. |
US10386654B2 (en) * | 2015-04-15 | 2019-08-20 | Vision Ease, Lp | Ophthalmic lens with graded microlenses |
CN112426122B (zh) * | 2020-11-23 | 2023-06-09 | 张云峰 | 一种单焦点人工晶体全程视力规划方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3960442A (en) | 1974-08-05 | 1976-06-01 | American Optical Corporation | Ophthalmic lens series |
FR2509482A1 (fr) * | 1981-07-08 | 1983-01-14 | Rodenstock Optik G | Verre de lunettes a forte vergence positive |
US5083859A (en) | 1991-01-02 | 1992-01-28 | Opticorp, Inc. | Aspheric lenses |
WO1992006400A1 (en) * | 1990-10-02 | 1992-04-16 | Volk Donald A | Aspheric ophthalmic accommodating lens design for intraocular lens and contact lens |
US5815237A (en) * | 1996-07-01 | 1998-09-29 | Bausch & Lomb Incorporated | Contact lens and method for making the same |
US5825454A (en) | 1996-01-16 | 1998-10-20 | Hoya Corporation | Aspherical spectacle lens |
US20060132708A1 (en) | 2004-12-16 | 2006-06-22 | Enrique Landgrave | Spectacle lenses incorporating atoric surfaces |
US20100079723A1 (en) * | 2008-10-01 | 2010-04-01 | Kingston Amanda C | Toric Ophthalimc Lenses Having Selected Spherical Aberration Characteristics |
ES2337970A1 (es) | 2007-09-26 | 2010-04-30 | Indizen Optical Technologies, S.L. | Lentes oftalmicas monofocales con superficies esfericas y/o asfericas combinadas. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3516575A1 (de) * | 1985-05-08 | 1986-11-13 | Hecht Contactlinsen GmbH, 7800 Freiburg | Contactlinse |
US5050981A (en) * | 1990-07-24 | 1991-09-24 | Johnson & Johnson Vision Products, Inc. | Lens design method and resulting aspheric lens |
US5436680A (en) * | 1994-04-20 | 1995-07-25 | Volk; Donald A. | Indirect ophthalmoscopy lens providing apparent image curvature |
US6709105B2 (en) * | 2001-04-10 | 2004-03-23 | Johnson & Johnson Vision Care, Inc. | Progressive addition lenses |
CN101446683B (zh) * | 2001-04-26 | 2013-04-24 | Hoya株式会社 | 散光用眼镜镜片的设计方法和散光用眼镜镜片 |
JP2004534964A (ja) * | 2001-04-27 | 2004-11-18 | ノバルティス アクチエンゲゼルシャフト | 自動レンズ設計及び製造システム |
US6554427B1 (en) * | 2001-12-11 | 2003-04-29 | Johnson & Johnson Vision Care, Inc. | Methods for designing contact lenses |
AR062067A1 (es) * | 2006-07-17 | 2008-10-15 | Novartis Ag | Lentes de contacto toricas con perfil de potencia optica controlado |
-
2011
- 2011-12-19 ES ES201132048A patent/ES2380979B1/es not_active Expired - Fee Related
-
2012
- 2012-12-05 PE PE2014000996A patent/PE20142218A1/es not_active Application Discontinuation
- 2012-12-05 CN CN201280062754.9A patent/CN104054010A/zh active Pending
- 2012-12-05 MX MX2014007353A patent/MX2014007353A/es not_active Application Discontinuation
- 2012-12-05 EP EP12822976.2A patent/EP2799914A1/en not_active Withdrawn
- 2012-12-05 WO PCT/ES2012/070849 patent/WO2013093146A1/es active Application Filing
- 2012-12-05 AU AU2012356705A patent/AU2012356705A1/en not_active Abandoned
- 2012-12-05 CA CA2858995A patent/CA2858995A1/en not_active Abandoned
- 2012-12-19 US US13/720,419 patent/US9170433B2/en not_active Expired - Fee Related
-
2014
- 2014-06-18 IL IL233214A patent/IL233214A0/en unknown
- 2014-07-16 EC ECIEPI20149541A patent/ECSP14009541A/es unknown
- 2014-07-18 CO CO14156156A patent/CO7010795A2/es unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3960442A (en) | 1974-08-05 | 1976-06-01 | American Optical Corporation | Ophthalmic lens series |
FR2509482A1 (fr) * | 1981-07-08 | 1983-01-14 | Rodenstock Optik G | Verre de lunettes a forte vergence positive |
WO1992006400A1 (en) * | 1990-10-02 | 1992-04-16 | Volk Donald A | Aspheric ophthalmic accommodating lens design for intraocular lens and contact lens |
US5083859A (en) | 1991-01-02 | 1992-01-28 | Opticorp, Inc. | Aspheric lenses |
US5825454A (en) | 1996-01-16 | 1998-10-20 | Hoya Corporation | Aspherical spectacle lens |
US5815237A (en) * | 1996-07-01 | 1998-09-29 | Bausch & Lomb Incorporated | Contact lens and method for making the same |
US20060132708A1 (en) | 2004-12-16 | 2006-06-22 | Enrique Landgrave | Spectacle lenses incorporating atoric surfaces |
ES2337970A1 (es) | 2007-09-26 | 2010-04-30 | Indizen Optical Technologies, S.L. | Lentes oftalmicas monofocales con superficies esfericas y/o asfericas combinadas. |
US20100079723A1 (en) * | 2008-10-01 | 2010-04-01 | Kingston Amanda C | Toric Ophthalimc Lenses Having Selected Spherical Aberration Characteristics |
Also Published As
Publication number | Publication date |
---|---|
PE20142218A1 (es) | 2014-12-20 |
ES2380979A1 (es) | 2012-05-22 |
US20130155374A1 (en) | 2013-06-20 |
CO7010795A2 (es) | 2014-07-31 |
EP2799914A1 (en) | 2014-11-05 |
CA2858995A1 (en) | 2013-06-27 |
AU2012356705A1 (en) | 2014-08-07 |
US9170433B2 (en) | 2015-10-27 |
IL233214A0 (en) | 2014-08-31 |
ECSP14009541A (es) | 2015-07-31 |
MX2014007353A (es) | 2014-08-27 |
CN104054010A (zh) | 2014-09-17 |
ES2380979B1 (es) | 2013-01-30 |
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