CN212322010U - Progressive ophthalmic lens with stepped multiple concentric rings - Google Patents
Progressive ophthalmic lens with stepped multiple concentric rings Download PDFInfo
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Abstract
The invention discloses a stepped concentric ring asymptotic spectacle lens, which belongs to a stepped concentric ring asymptotic spectacle lens, wherein the spectacle lens has a plurality of power areas, and objects at various distance positions from far to near can be seen clearly. The method is characterized in that: divide into three concentric circle region on the spectacle lens, these three regions are high number circular region, cascaded many concentric rings gradual change annular region and low number annular region, high number circular region central point puts, is cascaded many concentric rings gradual change annular region in the outer lane of high number circular region, is low number annular region in the outer lane of cascaded many concentric rings gradual change annular region, and the lens number function general formula of each annular ring of cascaded many concentric rings gradual change annular region is Y5.26X + A. The degree of the myopia deepening in three years by wearing the spectacle lens is only 20% of the degree of the myopia deepening by wearing the existing spectacle lens, so that the spectacle lens is not easy to generate fatigue when people wear the spectacle lens to see various distances from far to near, and the spectacle lens has a good protection effect on the vision of eyes.
Description
Technical Field
The invention belongs to the technical field of spectacle lenses, and particularly relates to a stepped concentric ring asymptotic spectacle lens which has a plurality of power areas and can clearly see objects at various distance positions from far to near.
Background
In order to adapt to the condition that objects with different distances can be seen clearly by only one pair of glasses, bifocal lenses are available. Bifocal lenses as shown in figure 1, bifocal lenses are lenses having two zones of different power, typically a small near zone and a large far zone, on one lens, with the near zone being below the far zone. The disadvantage of this lens is that only the near and far zones are present, which makes it difficult to satisfy the need for objects that are not visible within these two distances.
Chinese patent 2011200063799 "myopia prevention and treatment lenses and glasses" provides a myopia prevention and treatment lenses and glasses, the lenses include: a proximal lens located at a lower portion of said lens; the far lens is positioned at the upper part of the lens, a notch structure corresponding to the shape of the near lens is arranged below the optical central point of the far lens, and the near lens is placed in the notch structure; the invention also provides a pair of myopia prevention and treatment glasses, which comprises a glasses frame and the myopia prevention and treatment lenses. The invention has simple structure and convenient use, adopts the structure of the double-polished-film, is convenient to disassemble, can adjust the reaction, the eye position of far and near vision, the interpupillary distance of two eyes and the like according to the positive and negative relative adjustment of each person, and fundamentally solves the eye fatigue caused by over-sight.
Disclosure of Invention
The invention aims to provide a stepped concentric ring asymptotic spectacle lens which is provided with a plurality of power areas, can clearly see objects at various distance positions from far to near, enables eyes to be difficult to fatigue when seeing various distances from far to near, and can protect the eyes better than the prior spectacles.
The structure of the invention is as follows:
there is cascaded concentric ring asymptotic spectacle lens, including an eye glass 1, its characterized in that: the spectacle lens 1 is divided into three concentric circle areas, the three areas are a height number circular area 2, a step-type multi-concentric-ring gradual change annular area 3 and a low-degree annular area 4, the center of the height number circular area 2 is provided with the step-type multi-concentric-ring gradual change annular area 3 at the outer ring of the height number circular area 2, the low-degree annular area 4 at the outer ring of the step-type multi-concentric-ring gradual change annular area 3,
the degree of the high-degree circular area 2 is the degree of a spectacle lens which needs to be worn by a human eye and is detected by an instrument;
the annular district 3 of cascaded many concentric rings gradual change has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and preferred 1 st circle to nth circle reduce the number of degrees and are 100 degrees, and the function of the annular lens number of degrees of a certain circle of 1 st circle to nth circle is:
a first formula, Y ═ 5.26X-605.26;
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area 3, and when X is equal to 1, Y is-600;
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is n + 1;
a second formula, Y ═ 5.26X-705.26;
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradient annular area 3, and when X is equal to 1, Y is-700;
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is n + 1;
a third formula, wherein Y is 5.26X-905.26;
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area 3, and when X is equal to 1, Y is-900;
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is n + 1;
it can be seen that the general formula of the lens power of each ring is Y ═ 5.26X + a
The constant A is the degree B plus-5.26 of the height number circle 2, i.e. A ═ B-5.26
The variable Y is the degree of a certain circle in the stepped multi-concentric-ring gradual change annular area 3; y ranges from-50 to-900 + 100; preferably Y ranges from-600 to-900 +100, and Y for an ophthalmic lens ranges from 100 absolute;
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is n + 1;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The numerical function of the diameter of each ring-shaped outer edge line of the 1 st circle to the n +1 th circle of the stepped multi-concentric ring gradual change annular area 3 is as follows:
y is 2.1x + 2.9; the diameter y of the height number circular area 2 with x equal to 1 is 5.00 mm;
the variable y is the diameter of the outer edge line of a circle in the stepped multi-concentric-ring gradual change annular area 3, and the unit of y is millimeter;
the variable x is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradient annular area 3;
x of the 1 st turn is 2, and X of the n-th turn is n + 1.
The spectacle lens 1 is divided into three concentric circle areas, namely a height number circular area 2, a ladder-type multi-concentric ring gradient annular area 3 and a low-power annular area 4;
the diameter of the high-degree circular area 2 is the same degree within 5.00 mm, and the degree of the high-degree circular area 2 is the degree of glasses which are matched with human eyes and are detected by the instrument.
The ladder-type multi-concentric-ring gradient annular region 3 is wrapped outside the height number circular region 2, the innermost ring of the ladder-type multi-concentric-ring gradient annular region 3 is connected with the height number circular region 2, the diameter of the outermost ring of the ladder-type multi-concentric-ring gradient annular region 3 is 40 mm-50 mm, preferably 45 mm, when the lens power difference between the innermost ring and the outermost ring of the ladder-type multi-concentric-ring gradient annular region 3 is 70-100 degrees, the height difference is 100 degrees, namely when the lens power of the innermost ring of the height number circular region 2 is 600 degrees, the lens power of the outermost ring of the ladder-type multi-concentric-ring gradient annular region 3 is 500 degrees; dividing the preferred difference of 100 degrees by 5.26 degrees equals the circle of lenses to which 19 different lens powers are to be set, and if 80 degrees by 5.26 degrees is selected, then the circle of lenses to which 15 different lens powers are to be set; the diameter of each ring-shaped outer edge line can be calculated by using the function Y of the diameter value of each ring-shaped outer edge line, which is 2.1X +2.9, and the lens power value of each ring-shaped lens can be calculated by using the function general formula Y of the lens power of each ring-shaped lens, which is 5.26X + A, according to the preferred difference of the height and the height of 100 degrees.
The degree of the low-degree annular region 4 is the maximum annular degree value of the gradient multi-concentric-ring gradual change annular region 3, the degree of the low-degree annular region 4 is one degree, namely, after the degree of the high-degree annular region 2 is-600 degrees to-900 degrees, the degree of the low-degree annular region 4 is reduced by 100 degrees which is preferable to the degree of the high-degree annular region 2, the degree of the high-degree annular region 2 is-700 degrees, the degree of the low-degree annular region 4 is-600 degrees, and the degree of the high-degree annular region 2 is-900 degrees, the degree of the low-degree annular region 4 is-800 degrees; the degree of the low degree annular region 4 is best suited for these high degree annular regions 2 to view very close objects and text in the degree of the low degree annular region 4.
The spectacle lenses for myopic eyes are generally divided into four main categories,
the lens power of the high power circular area 2 of the lens for the shallow myopia is 50 to 100; the power zone available for use with the lenses of the invention;
the lens power of a high power circular area 2 of the lens of the first myopic eye is between 100 and 400; the power zone available for use with the lenses of the invention;
the lens power of a high power circular area 2 of the lens of the deep myopia is 400 to 600; the power zone available for use with the lenses of the invention;
the lens power of a high power circular area 2 of the lens of the hypermyopia is-600 to-900; the power zone of optimal use of the lens of the invention.
The invention has the advantages that: the spectacle lens has multiple step gradients between the highest power and the lowest power, can clearly see a far object, a near object and dozens of objects with gradient distances between the far object and the near object, solves the problem that the prior spectacle lens is easy to damage eyes because no proper lens is available when the lens looks at the dozens of gradient distances between the far object and the near object, namely solves the problem that the prior spectacle lens is easy to damage the eyes and accelerates the eyes to be more myopic; generally, the degree of the myopia deepening by wearing the spectacle lens of the invention in three years is only 20 percent of the degree of the myopia deepening by wearing the prior spectacle lens, so that the spectacle lens of the invention is not easy to generate fatigue when people wear the spectacle lens to see various distances from far to near, and has good protection effect on the vision of eyes.
Drawings
FIG. 1 is a schematic diagram of a prior art bifocal lens configuration;
FIG. 2 is a schematic structural view of the present invention;
in the figure 1 is an ophthalmic lens, 2 is a high-count circular zone, 3 is a stepped multi-concentric ring progressive annular zone, 4 is a low-count annular zone, and 5 is an annular ring.
Detailed Description
Example 1, ophthalmic lens high power circular zone-600 degree stepped multiple concentric ring progressive ophthalmic lens
As shown in fig. 2, the distribution rule of the various power regions of the spectacle lens is as follows: the progressive spectacle lens with the gradient multi-concentric rings comprises an spectacle lens 1, wherein the spectacle lens 1 is divided into three concentric ring areas, the three areas are a height number circular area 2, a gradient multi-concentric ring progressive annular area 3 and a low-power annular area 4, the center of the height number circular area 2 is provided with the gradient multi-concentric ring progressive annular area 3 at the outer ring of the height number circular area 2, the low-power annular area 4 at the outer ring of the gradient multi-concentric ring progressive annular area 3,
the specific lens powers of the three concentric circle regions and the powers of each circle in the stepped multi-concentric ring gradation annular region 3 are as follows:
the high-power circular area 2 has the power of-600 degrees, and is used for detecting the power of the spectacle lens needed to be worn by human eyes by using an instrument;
cascaded many concentric rings gradual change annular region 3 has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
Y＝5.26X-605.26；
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area 3, and when X is equal to 1, Y is-600;
the variable X is a natural number in the range of 2 to 19 of a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is 19;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The maximum edge line diameter of each annular ring of the stepped multi-concentric ring gradual change annular region 3 is as follows: the numerical function of the diameter of each ring-shaped outer edge line of the 1 st circle to the n +1 th circle of the stepped multi-concentric ring gradual change annular area 3 is as follows:
y is 2.1x + 2.9; the diameter y of the height number circular area 2 with x equal to 1 is 5.00 mm;
the variable y is the diameter of the outer edge line of a circle in the stepped multi-concentric-ring gradual change annular area 3, and the unit of y is millimeter;
the variable x is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradient annular area 3;
x of the 1 st turn is 2, and X of the n-th turn is n + 1.
Example 2, ophthalmic lens high power circular zone-700 degree stepped multi concentric ring progressive ophthalmic lens
As shown in fig. 2, the distribution rule of the various power regions of the spectacle lens is as follows: the same as in example 1.
The specific lens powers of the three concentric circle regions and the powers of each circle in the stepped multi-concentric ring gradation annular region 3 are as follows:
the high-power circular area 2 has the power of-700 degrees and is used for detecting the power of the spectacle lens which needs to be worn by human eyes by using an instrument;
cascaded many concentric rings gradual change annular region 3 has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
Y＝5.26X-705.26；
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradient annular area 3, and when X is equal to 1, Y is-700;
the variable X is a natural number in the range of 2 to 20 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is 20;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The maximum edge line diameter of each annular ring of the stepped multi-concentric ring gradual change annular region 3 is as follows: the same as in example 1.
Example 3 ophthalmic lens high power circular zone-800 degree stepped multiple concentric rings progressive ophthalmic lens
As shown in fig. 2, the distribution rule of the various power regions of the spectacle lens is as follows: the same as in example 1.
The specific lens powers of the three concentric circle regions and the powers of each circle in the stepped multi-concentric ring gradation annular region 3 are as follows:
the high-power circular area 2 has the power of-800 degrees, which is the power of the spectacle lens needed to be worn by the human eye through instrument detection;
cascaded many concentric rings gradual change annular region 3 has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
Y＝5.26X-805.26；
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area 3, and when X is equal to 1, Y is-800;
the variable X is a natural number in the range of 2 to 21 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is 21;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The maximum edge line diameter of each annular ring of the stepped multi-concentric ring gradual change annular region 3 is as follows: the same as in example 1.
Example 4 ophthalmic lens high power circular zone-900 degree stepped multi concentric ring progressive ophthalmic lens
As shown in fig. 2, the distribution rule of the various power regions of the spectacle lens is as follows: the same as in example 1.
The specific lens powers of the three concentric circle regions and the powers of each circle in the stepped multi-concentric ring gradation annular region 3 are as follows:
the high-power circular area 2 is the power of-900 degrees of spectacle lenses which need to be worn by human eyes and are detected by an instrument;
cascaded many concentric rings gradual change annular region 3 has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
Y＝5.26X-905.26；
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area 3, and when X is equal to 1, Y is-900;
the variable X is a natural number in the range of 2 to 22 at a certain circle position of the stepped multi-concentric ring gradient annular area 3;
x of the 1 st turn is 2, and X of the nth turn is 22;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The maximum edge line diameter of each annular ring of the stepped multi-concentric ring gradual change annular region 3 is as follows: the same as in example 1.
Example 5 ophthalmic lens high power circular zone-80 degree stepped multi concentric ring progressive ophthalmic lens
As shown in fig. 2, the distribution rule of the various power regions of the spectacle lens is as follows: the same as in example 1.
The specific lens powers of the three concentric circle regions and the powers of each circle in the stepped multi-concentric ring gradation annular region 3 are as follows:
the high-power circular area 2 has the power of-80 degrees, which is the power of the spectacle lens needed to be worn by the human eye through instrument detection;
cascaded many concentric rings gradual change annular region 3 has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
Y＝5.26X-85.26；
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area 3, and when X is equal to 1, Y is-80;
the variable X is a natural number in the range of 2 to 18 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is 18;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The maximum edge line diameter of each annular ring of the stepped multi-concentric ring gradual change annular region 3 is as follows: the same as in example 1.
Example 6 ophthalmic lens high power circular zone of-300 degree stepped multi concentric ring progressive ophthalmic lens
As shown in fig. 2, the distribution rule of the various power regions of the spectacle lens is as follows: the same as in example 1.
The specific lens powers of the three concentric circle regions and the powers of each circle in the stepped multi-concentric ring gradation annular region 3 are as follows:
the high-power circular area 2 has the power of-300 degrees, and is used for detecting the power of the spectacle lens needed to be worn by human eyes by using an instrument;
cascaded many concentric rings gradual change annular region 3 has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
Y＝5.26X-305.26；
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradient annular area 3, and when X is equal to 1, Y is-300;
the variable X is a natural number in the range of 2 to 19 of a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is 19;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The maximum edge line diameter of each annular ring of the stepped multi-concentric ring gradual change annular region 3 is as follows: the same as in example 1.
Example 7, a circular zone of ocular lens height of-500 degree stepped multiple concentric rings progressive ophthalmic lens
As shown in fig. 2, the distribution rule of the various power regions of the spectacle lens is as follows: the same as in example 1.
The specific lens powers of the three concentric circle regions and the powers of each circle in the stepped multi-concentric ring gradation annular region 3 are as follows:
the high-power circular area 2 has the power of-500 degrees, which is the power of the spectacle lens needed to be worn by the human eye through instrument detection;
cascaded many concentric rings gradual change annular region 3 has a plurality of annular rings 5 that follow each other closely, and every annular ring 5's lens number of degrees is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
Y＝5.26X-505.26；
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradient annular area 3, and when X is equal to 1, Y is-500;
the variable X is a natural number in the range of 2 to 20 at a certain circle position of the stepped multi-concentric-ring gradual change annular area 3;
x of the 1 st turn is 2, and X of the nth turn is 20;
the degree of the low-degree annular area 4 is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area 3, and the degree of the low-degree annular area 4 is one degree.
The maximum edge line diameter of each annular ring of the stepped multi-concentric ring gradual change annular region 3 is as follows: the same as in example 1.
Claims (2)
1. There is cascaded concentric ring asymptotic spectacle lens, includes an eye glass (1), its characterized in that: the spectacle lens (1) is divided into three concentric circle areas, the three areas are a height number circular area (2), a step-type multi-concentric-ring gradual change annular area (3) and a low-degree annular area (4), the center position of the height number circular area (2) is that the outer ring of the height number circular area (2) is the step-type multi-concentric-ring gradual change annular area (3), the outer ring of the step-type multi-concentric-ring gradual change annular area (3) is the low-degree annular area (4),
the degree of the high-degree circular area (2) is the degree of a spectacle lens which needs to be worn by a human eye and is detected by an instrument;
cascaded many concentric rings gradual change annular region (3) have a plurality of annular rings (5) that follow each other closely, and the lens number of degrees of every annular ring (5) is the same, from the inner circle to the outer lane, and the degree of lens reduces gradually, and it is the 1 st circle to establish the minimum innermost round of diameter, and the biggest outermost round of diameter is the nth circle, and the function of the lens number of degrees of a certain circle annular of 1 st circle to nth circle is:
a first formula, Y ═ 5.26X-605.26;
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area (3), and when X is equal to 1, Y is-600;
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area (3);
x of the 1 st turn is 2, and X of the nth turn is n + 1;
a second formula, Y ═ 5.26X-705.26;
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradient annular area (3), and when X is equal to 1, Y is-700;
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area (3);
x of the 1 st turn is 2, and X of the nth turn is n + 1;
a third formula, wherein Y is 5.26X-905.26;
the variable Y is the degree of a certain circle in the stepped multi-concentric ring gradual change annular area (3), and when X is equal to 1, Y is-900;
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area (3);
x of the 1 st turn is 2, and X of the nth turn is n + 1;
it can be seen that the general formula of the lens power of each ring is Y ═ 5.26X + a
The constant A is the degree B plus-5.26 of the height number circular area (2), namely A ═ B-5.26
The variable Y is the degree of a certain circle in the stepped multi-concentric-ring gradual change annular area (3);
the variable X is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradual change annular area (3);
x of the 1 st turn is 2, and X of the nth turn is n + 1;
the degree of the low-degree annular area (4) is the maximum annular degree value of the stepped multi-concentric-ring gradual change annular area (3), and the degree of the low-degree annular area (4) is one degree.
2. The stepped multi-concentric ring progressive ophthalmic lens of claim 1, wherein: the numerical function of the diameter of each ring outer edge line of the 1 st to the n +1 st circles of the stepped multi-concentric ring gradient ring area (3) is as follows:
y is 2.1x + 2.9; the diameter of the height number circular area (2) with x equal to 1 is equal to 5.00 mm;
the variable y is the diameter of the outer edge line of a circle in the stepped multi-concentric-ring gradual change annular area (3), and the unit of y is millimeter;
the variable x is a natural number in the range of 2 to n +1 at a certain circle position of the stepped multi-concentric-ring gradient annular area (3);
x of the 1 st turn is 2, and X of the n-th turn is n + 1.
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| CN202020769724.3U CN212322010U (en) | 2020-04-29 | 2020-04-29 | Progressive ophthalmic lens with stepped multiple concentric rings |
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| CN202020769724.3U CN212322010U (en) | 2020-04-29 | 2020-04-29 | Progressive ophthalmic lens with stepped multiple concentric rings |
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