CN219778056U - Lens with clear center imaging and blurred periphery imaging - Google Patents
Lens with clear center imaging and blurred periphery imaging Download PDFInfo
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- CN219778056U CN219778056U CN202320379783.3U CN202320379783U CN219778056U CN 219778056 U CN219778056 U CN 219778056U CN 202320379783 U CN202320379783 U CN 202320379783U CN 219778056 U CN219778056 U CN 219778056U
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- 238000003384 imaging method Methods 0.000 title claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims abstract description 48
- 210000001525 retina Anatomy 0.000 claims abstract description 35
- 230000004438 eyesight Effects 0.000 claims abstract description 16
- 230000004379 myopia Effects 0.000 claims abstract description 11
- 208000001491 myopia Diseases 0.000 claims abstract description 11
- 210000001508 eye Anatomy 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 10
- 239000011521 glass Substances 0.000 abstract description 4
- 238000012937 correction Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 210000005252 bulbus oculi Anatomy 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000004404 development of eyeball Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004373 eye development Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004515 progressive myopia Effects 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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Abstract
The utility model discloses a lens for clear central imaging and blurred peripheral imaging, which comprises a single diopter zone and a multi-diopter zone, wherein the single diopter zone comprises a central zone and a peripheral zone, the multi-diopter zone is arranged between the central zone and the peripheral zone, the multi-diopter zone comprises a plurality of annular zones, and each annular zone can provide a plurality of different diopters so as to correct the far-vision defocus of retina and blur images seen by the peripheral zone except the single diopter zone. The utility model can effectively correct the far vision defocus generated when the myopia wears the glasses, and by arranging the multi-diopter zone, the single additional diopter is not provided in the ring any more, and the multiple additional diopters are introduced, so that the utility model can be more suitable for different eyes, so as to make up the far vision defocus to the greatest extent and weaken the influence of the far vision defocus on the eyes; by providing different annular positions, the symmetrical defocus can be corrected to further reduce the effect of hyperopic defocus on the human eye.
Description
Technical Field
The utility model relates to a lens, in particular to a lens with clear center imaging and blurred periphery imaging.
Background
Defocus is characterized by the fact that the retina is used as a boundary when the human eye is imaged, and the defocus is focused or imaged clearly in front of the retina, which is called myopia defocus, and is also the cause of myopia formation; when focused behind the retina, it is called hyperopic defocus. Defocus is an important visual feedback signal that can alter the way and direction of growing eyeballs are developing. If defocus stimulus is given by wearing glasses during eye development, the eyeball will develop toward the defocus signal position, and orthovisualization has been achieved. Clinically, the defocus signal of the peripheral retina plays an important role in regulating the growth and development of eyeballs, and particularly when the visual signals of the center and the periphery are inconsistent, the peripheral defocus signal is dominant, in other words, the peripheral defocus has a larger influence on the orthovisual regulation of human eyes than the central defocus. When wearing glasses for correcting myopia with a conventional single diopter, the lens focuses on the retina in a small central range to form a clear image, and when the focal length or the eye axis is taken as a radius to form a circle, the peripheral focusing points are all behind the retina, so that hyperopic defocus is formed, because the eyeball is elliptical, the long axis is in the eye axis direction, and when only one central diopter is used for imaging, the peripheral images all fall behind the retina. At this point, the peripheral retina is stimulated by hyperopic defocus and the axis of the eye begins to grow, resulting in increased myopia. In correcting myopia and slowing the progression of myopia, the primary task is to reduce, inhibit or eliminate the effects of hyperopic defocus.
The prior means for treating the far-reaching defocus of retina is mainly to wear peripheral defocus lenses, and the peripheral defocus lenses mainly have two main types:
1. an overall peripheral defocus lens: the lens surface shape is changed to achieve the purpose of peripheral defocus, the lens is attractive in appearance and relatively easy to process, but the peripheral defocus effect is weak, and the design mode has large influence on the diopter of the non-central area of the lens, so that the actual diopter correction range of the lens is reduced, and the phenomenon of improper correction exists.
Such as the patent "lenses for myopia correction" (2006800441239), which has a central optical zone that is perfectly circular and a peripheral optical zone that is annular; the central optical zone of the patent is a transverse oval and the peripheral optical zone is annular, patent No. ophthalmic lens element (2008801159183). The peripheral portion of the lens is designed to have a uniform and consistent refractive power in the 360 DEG range, but in the practical use process, the nasal side is larger than the peripheral far vision defocus of the temporal retina, the difference increases with the increase of the myopic eye power, and the 360 DEG range correction cannot eliminate the refractive error.
2. Micro-structured peripheral defocus lens: additional diopters are created using microstructures (microlenses, cylinders, diffractive slopes, etc.) to inhibit peripheral hyperopic defocus. However, the diopter provided by the microstructure is equivalent to the positive value, the effect on peripheral defocus is equivalent, when the far vision defocus of the human eye is unequal or is larger than the diopter provided by the microstructure, the peripheral defocus effect is not ideal, the far vision defocus is not corrected in place, the far vision defocus still exists, and the inhibition effect on the increase of the spherical axis of the eye is greatly reduced.
As a patent "spectacle lens" (2013106281748), there is disclosed a spectacle lens for correcting a peripheral hyperopic defocus of the retina, which consists of a first refractive zone at a central portion, which is a uniform smooth refractive mirror, and a second refractive zone at a peripheral portion, which is a 360 ° annular refractive surface consisting of a plurality of island-shaped microlenses independent of each other; for example, in a patent 'an ophthalmic lens with a surface having zonal cylindrical microstructures' (202010000666.2), a plurality of zonal cylindrical microstructures with different radii are arranged in a radial array in a regular nested manner with the geometric center of the lens as the center, and each zonal cylindrical microstructure can generate a relatively stable refractive power and a higher order aberration.
Both types of lenses correct for partial hyperopic defocus but do not fully or mostly achieve the desired correction because their enhanced add power is fixed and the effect on peripheral defocus is equivalent, but when the eye hyperopic defocus is unequal or exceeds the add power provided by them, the peripheral defocus effect is not ideal, there is a case where the hyperopic defocus is not corrected in place, there is still hyperopic defocus, and the inhibition effect on the increase of the axis of the eye is greatly reduced. Further research is needed as to how more eyes can be adapted to correct hyperopic defocus.
Disclosure of Invention
The utility model aims to: the utility model aims to provide a lens for clear central imaging and blurred peripheral imaging, which can greatly improve the far vision defocus of the periphery of retina and provide more correction possibilities on the premise of ensuring that the central visual field corrects diopter misalignment.
The technical scheme is as follows: the utility model comprises a single diopter zone and a multi-diopter zone, wherein the single diopter zone comprises a central zone and a peripheral zone, the multi-diopter zone is arranged between the central zone and the peripheral zone, the multi-diopter zone comprises a plurality of annular zones, and each annular zone can provide a plurality of different diopters so as to correct far-vision defocus of retina and blur images seen by the peripheral zone except the single diopter zone.
The multi-diopter zone consists of N annular zones, N is more than or equal to 6, diopter distribution rules of adjacent annular zones are different, and the positions of the highest diopters of the adjacent annular zones are staggered.
The number of diopters provided in the annular region is 3 or more.
The diopters within the annular zone include a base diopter and an add diopter.
The add power includes a low add power, a medium add power, and a high add power, the base power being provided by the first microstructure, the low add power being provided by the second microstructure, the medium add power being provided by the third microstructure, the high add power being provided by the fourth microstructure.
The central zone provides the diopter necessary to correct myopia through which a clear image can be seen, focused on the retina.
The peripheral zone provides a greater diopter than the central zone for correcting distance vision defocus at the outermost periphery of the retina.
The diopter Q1 of the central zone ranges from-15D to 10D, and the diopter difference between the diopter of the peripheral zone and the diopter of the central zone is 0 to 4D.
The range of the diopter of the substrate is between Q1 and Q1 plus 0.5D, the range of the low diopter is between 0 and 2.5D, the range of the medium diopter is between 2.5D and 3.5D, and the range of the high diopter is between 3.5D and 5.5D.
The beneficial effects are that: the utility model can effectively correct the far vision defocus generated when the myopia wears the glasses, and by arranging the multi-diopter zone, the single additional diopter is not provided in the ring any more, and the multiple additional diopters are introduced, so that the utility model can be more suitable for different eyes, so as to make up the far vision defocus to the greatest extent and weaken the influence of the far vision defocus on the eyes; the symmetrical defocus can be corrected by providing different positions of the addition diopters through different annular positions, so that the influence of the hyperopic defocus on human eyes is further reduced; the high add power can create higher order defocus and aberrations, further creating different defocus effects on the retina, providing more possibilities for design and machining.
Drawings
FIG. 1 is a schematic plan view of a lens having an annular zone in the form of a ring in accordance with the present utility model;
FIG. 2 is a schematic plan view of a lens with a hexagonal annular region in accordance with an embodiment of the present utility model;
FIG. 3 is a partial schematic view of a single annular zone with addition power consisting of hemispheres;
FIG. 4 is a partial intent of a single annular zone of add power consisting of cylinders;
fig. 5 is a schematic diagram of single annulus anterior retinal focus.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the lens of the present utility model comprises a single diopter zone 1 and a multi-diopter zone 2, wherein the single diopter zone 1 comprises a central zone 101 and a peripheral zone 102, the multi-diopter zone 2 is arranged between the central zone 101 and the peripheral zone 102, and the multi-diopter zone 2 comprises a plurality of annular zones which can be distributed on the front surface or the rear surface of the lens. The single diopter zone 1 provides only a single diopter, wherein the central zone 101 provides the diopter necessary for correcting myopia, through which a clear image is visible, focused on the retina 3, as shown by O1 in fig. 5; peripheral zone 102 provides a greater diopter than central zone 101 for correcting distance vision defocus at the outermost periphery of retina 3; each annular zone of multi-diopter zone 2 provides a plurality of different diopters, correcting for distance vision defocus of retina 3, blurring the image seen by the peripheral region except single diopter zone 1, because it is focused in front of retina 3 rather than on retina 3, as shown in fig. 5 at O2-O4 positions.
The central zone 101 of single diopter zone 1 has diopter Q1 ranging from-15D to 10D for clear imaging, focused on retina 3, as shown by O1 in FIG. 5; the diopter Q2 of the peripheral zone 102 is greater than the diopter of the central zone 101, the peripheral zone 102 diopter differing from the central zone 101 diopter by 0-4D. The multi-diopter zone 2 consists of N annular zones, wherein N is more than or equal to 6; the shape of the annular region comprises a symmetrical shape such as a circle, a polygon and the like; the number of diopters provided in the annular region is 3 or more, a plurality of focusing points are formed in front of the retina 3, and as shown in O2-O4 positions shown in fig. 5, for example, the number of diopters provided in the annular region is 3, focusing is performed in front of the retina 3, and the plurality of focusing points are fused for imaging, so that the hyperopic defocus of different degrees can be corrected.
The diopter P in the annular zone comprises a base diopter P1 and an additional diopter, wherein the additional diopter is an additional diopter based on the base diopter P1, and the additional diopter is composed of a microstructure such as a cylinder, a hemisphere, continuous waves and the like and is not limited to the shape. The diopter P distribution rules of the adjacent annular areas are different, the positions of the highest diopters of the adjacent annular areas are staggered, and the diopter P of each annular area is different by 0.5D. The base power P1 is provided by the first microstructure 201, the add power includes a low add power P2, a medium add power P3, and a high add power P4, the low add power P2 is provided by the second microstructure 202, the medium add power P3 is provided by the third microstructure 203, the high add power P4 is provided by the fourth microstructure 204, P1 ranges from Q1 to Q1+0.5D, P2 ranges from 0 to 2.5D, P3 ranges from 2.5D to 3.5D, and P4 ranges from 3.5D to 5.5D. The radial width of the microstructure in the annular region ranges from 0.5mm to 2mm, and the radial widths of the microstructures in different annular regions can be the same or different; the interval range of the microstructures in the same annular region 2 is 0.1 mm-3 mm, and the microstructure intervals of different annular belt positions can be the same or different.
As shown in fig. 5, in the single-ring focusing imaging case, the light is focused on the position of the retina O1 through the first microstructure 201, so as to form clear images; the light is focused at an O2 position in front of the retina 3 via a second microstructure 202 providing low add power, imaging a blurred image on the retina; the light is focused at a position O3 in front of the retina 3 through a third microstructure 203 providing intermediate addition diopters, imaging a blurred image on the retina 3; the light is focused at the O4 position in front of the retina 3 via a fourth microstructure 204 providing high add power, imaging a blurred image on the retina.
Example 1
As shown in FIG. 1, the central area 101 uses the center of the lens as a circle with a radius R1, the range of R1 is 5 mm-10 mm, the center of the lens is used as a circle with a radius R2, the range of R2 is 10 mm-25 mm, the annular area between R1 and R2 is a multi-diopter area 2, the peripheral area 102 uses the center of the lens as a circle with a radius R3, and R3 is more than or equal to 20mm. At this point, the add power in the annular zone is hemispherical-like microstructure, as shown in fig. 3.
Example 2
As shown in FIG. 2, the center area 101 uses the center of the lens as a circle with a radius R1, R1 ranges from 5mm to 10mm, an inscribed hexagon is formed in the circle, the area in the hexagon is the center area 101, then uses the center of the lens as a circle with a radius R2, R2 ranges from 10mm to 25mm, an inscribed hexagon is formed in the circle, a hexagonal annular area between two inscribed hexagons is a multi-diopter area 2, and the peripheral area 102 uses the center of the lens as a circle with a radius R3, wherein R3 is more than or equal to 20mm. At this point, the add power in the annular zone is a cylindrical microstructure, as shown in FIG. 4.
Claims (9)
1. The lens is characterized by comprising a single diopter zone and a multi-diopter zone, wherein the single diopter zone comprises a central zone and a peripheral zone, the multi-diopter zone is arranged between the central zone and the peripheral zone, the multi-diopter zone comprises a plurality of annular zones, and each annular zone can provide a plurality of different diopters so as to correct the far vision defocus of retina and blur images seen by the peripheral zone except the single diopter zone.
2. A lens for clear central imaging and blurred peripheral imaging according to claim 1, wherein said multi-diopter zones comprise at least 6 annular zones, the diopter distribution rules of adjacent annular zones being different, the positions of the highest diopters of adjacent annular zones being staggered.
3. A lens for clear-centered imaging and blurred imaging as claimed in claim 1 or 2, wherein the number of diopters provided in said annular zone is greater than or equal to 3.
4. A center clear imaging, peripheral blur imaging lens according to claim 3, wherein the diopters in said annular zone include a base diopter and an add diopter.
5. The lens of claim 4 wherein the add power comprises a low add power, a medium add power, and a high add power, the base power being provided by the first microstructure, the low add power being provided by the second microstructure, the medium add power being provided by the third microstructure, the high add power being provided by the fourth microstructure.
6. A centrally clear imaged, peripherally blurred imaged lens as claimed in claim 5, wherein said central zone provides the diopter required for correcting myopia, through which the clear image can be seen, focused on the retina.
7. A centrally clear imaged, peripherally blurred imaged lens as claimed in claim 6, wherein said peripheral zone provides a greater diopter than the central zone for correcting distance vision defocus at the outermost periphery of the retina.
8. The lens for clear-centered imaging and blurred imaging as claimed in claim 7, wherein said central zone diopter Q1 is in the range of-15D to 10D, and the peripheral zone diopter is different from the central zone diopter by 0 to 4D.
9. The lens of claim 8, wherein the base diopter ranges from between q1 to q1+0.5d, the low addition diopter ranges from 0 to 2.5d, the medium addition diopter ranges from 2.5D to 3.5D, and the high addition diopter ranges from 3.5D to 5.5D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320379783.3U CN219778056U (en) | 2023-03-03 | 2023-03-03 | Lens with clear center imaging and blurred periphery imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320379783.3U CN219778056U (en) | 2023-03-03 | 2023-03-03 | Lens with clear center imaging and blurred periphery imaging |
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| Publication Number | Publication Date |
|---|---|
| CN219778056U true CN219778056U (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320379783.3U Active CN219778056U (en) | 2023-03-03 | 2023-03-03 | Lens with clear center imaging and blurred periphery imaging |
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| Country | Link |
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| CN (1) | CN219778056U (en) |
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- 2023-03-03 CN CN202320379783.3U patent/CN219778056U/en active Active
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