CN202815345U - Wide-screen intelligent presbyopic lens and production mold thereof - Google Patents
Wide-screen intelligent presbyopic lens and production mold thereof Download PDFInfo
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- CN202815345U CN202815345U CN 201220271952 CN201220271952U CN202815345U CN 202815345 U CN202815345 U CN 202815345U CN 201220271952 CN201220271952 CN 201220271952 CN 201220271952 U CN201220271952 U CN 201220271952U CN 202815345 U CN202815345 U CN 202815345U
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Abstract
The utility model discloses a wide-screen intelligent presbyopic lens which comprises a front surface and a rear surface, wherein the front surface and/or the rear surface are/is of a free curve, and each free curve comprises a distant vision area, a near vision area, a gradual change area arranged between the distant vision area and the near vision area, and astigmatism areas arranged at two sides of the gradual change area. By utilizing the wide-screen intelligent presbyopic lens, a user can see both distant places and near places, and the wide-screen intelligent presbyopic lens is free of remarkable dead zone feeling and suitable for multiple indoor purposes. The utility model further discloses a production mold of the wide-screen intelligent presbyopic lens.
Description
Technical field
The utility model relates to a kind of widescreen intelligence presbyopic lens, particularly relates to a kind of preparation mould of widescreen intelligence presbyopic lens.
Background technology
At present, there are three kinds for the presbyopic lens of correcting the elderly's eyesight: monochromatic light presbyopic lens, two light presbyopic lenses and traditional presbyopic progressive lenses.
For the monochromatic light presbyopic lens, it only has a diopter, and human eye then needs different diopters when observing the object of different distance, in order to see the object of different sighting distances clearly, human eye need to be regulated, because middle-aged and old regulating powers are poor, or does not have regulating power at all, therefore, the monochromatic light presbyopic lens is for the elderly, when wearing or do not see, perhaps very easily produces visual fatigue.
The elderly can use Bifocal lenses or progressive lenses for the object of seeing different sighting distances clearly, these two kinds of eyeglasses all have different luminosity, needs when adaptation people eye is observed the object of different distance are the suitable lenses of wearing for a long time for progressive lenses in theory.
For two light presbyopic lenses, it has two diopters, can be respectively applied to look far away and looks near, but because to look far away and look closely be fast conversion, therefore, the elderly wears two light presbyopic Bifocal lenses and is easy to produce visual fatigue.
For traditional presbyopic progressive lenses, it has two diopters, can be respectively applied to look far away and look near, there is a transitional zone centre, thereby look far and change with looking closely progressively, therefore, in theory the elderly to wear progressive lenses be difficult for to produce visual fatigue, yet because the defective on the Design and manufacture, progressive lenses has tedious blind area, owing to look the existence of thing blind area, make the difficult adaptation of wearer of glasses, and very large discomfort arranged, easily produce visual fatigue, therefore, what common progressive lenses can not satisfy mid-aged population looks the thing needs, for example, utility model patent ZL 02829399-1 has introduced a kind of method that designs progressive lenses, referring to Fig. 1, we have downloaded the progressive lenses test pattern of making in this way in utility model patent people's official website, can see this sheet progressive lenses ADD=150 astigmatism maximum 200, and this explanation ZL 02829399-1 progressive lenses still has larger vision dead zone, wear the uncomfortable sensation of rear easy generation, that is to say easy generation visual fatigue.
The utility model content
For addressing the above problem, the utility model provides a kind of widescreen intelligence presbyopic lens of looking the thing blind area that do not exist.
For achieving the above object, the utility model provides following technical scheme: a kind of widescreen intelligence presbyopic lens, comprise front surface and rear surface, described front surface and/or rear surface are free form surface, and described free form surface comprises to be looked far field, near reading range, be located at the described astigmatism district of looking the transition region between far field and the near reading range and being located at both sides, described transition region; Described free form surface is by determining with minor function:
Z is the rise of coordinate points (x, y) in the formula;
C is benchmark vertex of a quadric curvature;
K is the quadric surface constant;
N is polynomial item number;
Ai is polynomial expression surface high-order term coefficient;
Be polynomial.
Preferably, described front surface and rear surface are free form surface.
Preferably, described front surface is free form surface, and described rear surface is aspheric surface.
Preferably, described front surface is aspheric surface, and described rear surface is free form surface.
Preferably, the diopter of described transition region adds light and is adjusted into 0.75D～1.50D, and described diopter is considered oneself as the far field to the continuous progressive increase of near reading range; Described diopter is by determining with minor function:
N is the refractive index of lens material in the formula;
Kmax is free form surface point place maximum curvature;
Kmin is free form surface point place minimum curvature.
Preferably, the maximum astigmatism ratio in described astigmatism district adds the little 0.25D of luminosity, i.e. C≤ADD-0.25, and described astigmatism is by determining with minor function:
N is the refractive index of lens material in the formula;
Kmax is free form surface point place maximum curvature;
Kmin is free form surface point place minimum curvature.
Preferably, described Kmax and Kmin are respectively by determining with minor function:
P is that Z is to the local derviation of x in the formula;
Q is that Z is to the local derviation of y;
R is that Z is to the local derviation of x;
S be Z to x, the mixing local derviation of y;
Q be Z to y, the second order local derviation of x;
G is Gaussian curvature;
H is mean curvature.
Preferably, the geometric center of described free form surface is made as and joins the mirror center and only be provided with a read area diopter.
The utility model also provides another technical scheme: a kind of widescreen intelligence presbyopic lens prepares mould, comprises upper bolster and die shoe, and described upper bolster and die shoe have respectively for the concave curved surface of moulding lens front surface and rear surface and convex surface.
Preferably, described concave curved surface and convex surface are complementary with described front surface and rear surface respectively.
We weigh the quality of the Random Curved Surface Designing of widescreen Intelligent presbyopic glasses sheet with the size of the functional value of evaluation function, and evaluation function is defined as follows:
In the formula
Be evaluation function;
Wi is the weight of operand;
Vi is the currency of operand;
The desired value of Ti operand;
Desired value is the value of wanting designated parameter to reach.
For the functional value that calculates evaluation function need to be write computer program, writing of optimizer need to expend a large amount of time and efforts, although some optimizer is write and has been finished, but effect is unsatisfactory, the method that we calculate evaluation function is to utilize some outstanding business software such as ZEMAX program, just it is transformed the functional value that can calculate easily desired evaluation function a little.
In above-mentioned evaluation function, with the various aberrations of widescreen Intelligent presbyopic glasses sheet, edge rise for example, diopter D and astigmatism C etc. are as the Optimum Operation number of ZEMAX program.Provide desired value and the weight of these Optimum Operation numbers according to designing requirement, the ZEMAX program will calculate the evaluation function value automatically.The functional value size of our above commentary valency function is estimated the quality of optimal design quality.When evaluation function reaches minimal value, show that then process of optimization finishes.
Adopt the beneficial effect of above technical scheme to be: first, 0.75D's to 1.50D add the light adjustment because described eyeglass eyeglass has from top to bottom, and add the light even variation, edge astigmatism optimal design, peripheral distortion is minimum, and (the maximum astigmatism in blind area is than adding the little 0.25D of luminosity, be C≤ADD-0.25, it is far and near with progressive significantly to be lower than tradition) subtle when wearing, be different from the edge obvious blind area sense of traditional progressive multi-focal lenses; The second, joining the mirror center is geometric center, only has one to read number of degrees measurement zone, and the monochromatic light chemical examination is joined, and need not the laundering period; For general progressive lenses, test that to join be very difficult, the equipment that needs and personnel's quality are very high, generally be difficult for reaching requirement, and our widescreen intelligence presbyopic lens test join just very simple, the same with the monochromatic light lens, join the geometric center that the mirror center is eyeglass, only have a dioptric measured value of read area to be equivalent to the diopter of monochromatic light lens, become the mirror assembling, closely press the design of interpupillary distance difference in size with interior deviator; The 3rd, read area has the inside prism design of substrate, reduces set, wears lighter; The 4th, described widescreen intelligence presbyopic lens can provide 2 meters to the clear visual field of 0.33 meter all distance, be fit to indoor dynamic moving, read a book, see computer, draw, play Mah-Jong, look up the people even see TV, one pair of glasses can easily be tackled, need not to pluck mirror, significantly promote convenience and the comfort level of the indoor dynamic moving of the elderly.
Description of drawings
Fig. 1 is disclosed progressive lenses among the ZL 02829399-1;
Fig. 2 is the structural representation of the utility model widescreen intelligence presbyopic lens;
Fig. 3 is the structural representation that the utility model widescreen intelligence presbyopic lens prepares mould;
Fig. 4 is the dioptric contour map of the utility model embodiment 1 free form surface;
Fig. 5 is the contour map of the utility model embodiment 1 free form surface astigmatism;
Fig. 6 is the dioptric contour maps of the utility model embodiment 2 free form surfaces;
Fig. 7 is the contour map of the utility model embodiment 2 free form surface astigmatism;
Fig. 8 is the dioptric contour maps of the utility model embodiment 3 free form surfaces;
Fig. 9 is the contour map of the utility model embodiment 3 free form surface astigmatism.
Wherein, 1. front surface 2. rear surfaces 3. upper bolsters, 31. concave curved surfaces 4. die shoes 41. convex surfaces.
Embodiment
Embodiment 1
ADD75 widescreen Intelligent presbyopic glasses sheet free form surface surface design
Referring to Fig. 2 and Fig. 3, a kind of widescreen intelligence presbyopic lens comprises a front surface 1 and a rear surface 2, and described front surface and rear surface are free form surface, and described free form surface comprises looks far field, near reading range and in the described transition region of looking between far field and the near reading range.
The described far field curved surface of looking is the polynomial expression face, and described shape of looking the far field curved surface is determined by following function:
In the formula, Zsy is for looking the rise that certain point (X, Y) is located on the aspheric surface refracting surface of far field;
Csy is the curvature of looking center, aspheric surface refracting surface summit, far field, and,
；
Dsy is for looking the far field diopter;
N is the refractive index for the production of the material of eyeglass.
As follows depending on far field curved surface given data:
Dsy=4.25D
N=1.523
Csy=4.25/1000*(1.552-1)=7.699E-3
X=-36:3:36
Y=36:-3:15
With the computing formula (1-1) of above-mentioned data substitution Zsy, obtaining Zsy is the matrix of 8 row, 25 row:
Zsy =
10.394 9.5313 8.7486 … 10.394
9.5313 8.6743 7.8972 … 9.5313
8.7486 7.8972 7.1249 … 8.7486
5.9937 5.1611 4.4056 … 5.9937。
Described near reading range curved surface is aspheric surface, and described near reading range curved surface is determined by following function:
In the formula, Zsj is the rise that certain point (X, Y) is located on the near reading range aspheric surface refracting surface;
Csj is the curvature of center, near reading range aspheric surface refracting surface summit, and,
Dsj is the near reading range diopter, and Dsj=Dsy+1D;
N is the refractive index for the production of the material of eyeglass.
Near reading range curved surface given data is as follows:
Dsj=Dsy+ADD=4.25+0.75=5.00D
N=1.523
Csy=5.00/1000*(1.523-1)= 9.5602E-3
X=-36:3:36
Y=-15:-3:-36
With the computing formula (1-2) of above-mentioned data substitution Zsj, obtaining Zsj is the matrix of 8 row, 25 row:
Zsj =
7.5425 6.4819 5.5235 … 7.5425
8.0538 6.9877 6.0243 … 8.0538
8.6617 7.5889 6.6196 … 8.6617
13.226 12.1 11.084 … 13.226。
Described transition region curved surface is determined by following function:
In the formula, Zjb is the rise that certain point (X, Y) is located on the plane of refraction of free form surface transition region;
Cjb is the curvature of center, plane of refraction summit, free form surface transition region, and,
；
Djb is free form surface transition region plane of refraction diopter;
N is the refractive index for the production of the material of eyeglass;
Djb = Dsy + i*( Dsj – Dsy ) / j；
J is that number is cut apart in the free form surface transition region;
i=1,2,3,… J。
The concrete numerical value of each point is by following calculative determination on the transition region:
Djb = Dsy + i*( Dsj – Dsy ) / j
Dsy = 4.25D
Dsj = 5.00D
j = 10
i=1,2,3,… 9
Djb = 4.325D,4.400D,4.475D,…4.925D。
Computing formula with Djb and N=1.523 substitution Cjb obtains
Cjb = 8.2696E-3, 8.413E-3, 8.5564E-3, … 9.41683E-3
X=-36:3:36
Y=12:-3:-12。
With above-mentioned Cjb, X, Y, the computing formula (1-3) of value substitution Zjb, obtaining Zjb is the matrix of 9 row, 25 row:
Zjb =
6.1084 5.2105 4.3967 … 6.1084
5.9408 5.0279 4.2008 … 5.9408
5.8444 4.9161 4.0753 … 5.8444
6.1084 5.2105 4.3967 … 6.1084。
If we represent the shape of ADD75 widescreen Intelligent presbyopic glasses sheet free form surface with Zmg, then:
Zmg = Zsy + Zjb + Zsj。
Zmg =
10.394 9.5313 8.7486 … 10.394
9.5313 8.6743 7.8972 … 9.5313
8.7486 7.8972 7.1249 … 8.7486
13.226 12.1 11.084 … 13.226。
Zmg is the square formation of 25 row, 25 row.We can find out that ball light and the astigmatism distribution of Zmg are not ideal from the value of Zmg, and the shortcoming of processing inconvenience is also arranged, and for this reason, we need to be optimized Zmg.
In order to optimize ADD75 widescreen Intelligent presbyopic glasses sheet free form surface surface, need to write the computer optimization program.We adopt business software zemax.exe to optimize ADD75 widescreen Intelligent presbyopic glasses sheet free form surface surface.In above-mentioned evaluation function, with the various aberrations on widescreen Intelligent presbyopic glasses sheet polynomial expression surface, edge rise for example, diopter D and astigmatism C etc. are as the Optimum Operation number of ZEMAX program.Provide desired value and the weight of these Optimum Operation numbers according to designing requirement, the ZEMAX program will calculate the evaluation function value automatically.The functional value size of our above commentary valency function is estimated the quality of optimal design quality.Work as evaluation function
When reaching minimal value, show that then process of optimization finishes.
Zmg becomes Z after optimizing as stated above,
Z =
10.875 9.9516 9.1165 … 10.875
9.9839 9.0667 8.2365 … 9.9839
9.1780 8.2657 7.4396 … 9.1780
12.278 11.305 10.420 … 12.278。
Z is the square formation of 25 row, 25 row. Z value input numerically-controlled machine just can process the polynomial expression surface of ADD75 widescreen Intelligent presbyopic glasses sheet.
According to above-mentioned Z value, can draw the contour map (referring to Fig. 4) of ADD75 widescreen Intelligent presbyopic glasses sheet surface power and the contour map (referring to Fig. 5) of surface astigmatism degree.
Because diopter D and astigmatism C are optimized, ADD75 widescreen Intelligent presbyopic glasses sheet surface power D varies continuously to 5.00D from 4.25D as can be seen from Figure 4, and the maximum additional astigmatism C in ADD75 widescreen Intelligent presbyopic glasses sheet surface=0.5D. is namely as can be seen from Figure 5:
Maximum additional astigmatism C≤ADD-0.25 (ADD=0.75D)
Can draw to draw a conclusion from above analysis: ADD75 widescreen Intelligent presbyopic glasses sheet is that luminosity changes continuously, and does not produce the eyeglass of visual fatigue.
ADD100 widescreen Intelligent presbyopic glasses sheet free form surface surface design
Referring to Fig. 2 and Fig. 3, a kind of widescreen intelligence presbyopic lens comprises a front surface 1 and a rear surface 2, and described front surface and rear surface are free form surface, and described free form surface comprises looks far field, near reading range and in the described transition region of looking between far field and the near reading range.
The described far field curved surface of looking is the polynomial expression face, and described shape of looking the far field curved surface is determined by following function:
In the formula, Zsy is for looking the rise that certain point (X, Y) is located on the aspheric surface refracting surface of far field;
Csy is the curvature of looking center, aspheric surface refracting surface summit, far field, and,
Dsy is for looking the far field diopter;
N is the refractive index for the production of the material of eyeglass.
As follows depending on far field curved surface given data:
Dsy=4.25D
N=1.523
Csy=4.25/1000*(1.552-1)=7.699E-3
X=-36:3:36
Y=36:-3:15
With the computing formula (1-1) of above-mentioned data substitution Zsy, obtaining Zsy is the matrix of 8 row, 25 row:
Zsy =
10.394 9.5313 8.7486 … 10.394
9.5313 8.6743 7.8972 … 9.5313
8.7486 7.8972 7.1249 … 8.7486
5.9937 5.1611 4.4056 … 5.9937。
Described near reading range curved surface is aspheric surface, and described near reading range curved surface is determined by following function:
In the formula, Zsj is the rise that certain point (X, Y) is located on the near reading range aspheric surface refracting surface;
Csj is the curvature of center, near reading range aspheric surface refracting surface summit, and,
Dsj is the near reading range diopter, and Dsj=Dsy+1D;
N is the refractive index for the production of the material of eyeglass.
Near reading range curved surface given data is as follows:
Dsj=Dsy+ADD=4.25+1.00=5.25D N=1.523 Csy=5.25/1000*(1.523-1)= 0.01003824
X=-36:3:36
Y=-15:-3:-36
With the computing formula (1-2) of above-mentioned data substitution Zsj, obtaining Zsj is the matrix of 8 row, 25 row:
Zsj =
7.9514 6.8292 5.8163 … 7.9514
8.4930 7.3642 6.3455 … 8.4930
9.1373 8.0005 6.9748 … 9.1373
13.992 12.792 11.710 … 13.992。
Described transition region curved surface is determined by following function:
In the formula, Zjb is the rise that certain point (X, Y) is located on the plane of refraction of free form surface transition region;
Cjb is the curvature of center, plane of refraction summit, free form surface transition region, and,
Djb is free form surface transition region plane of refraction diopter;
N is the refractive index for the production of the material of eyeglass;
Djb = Dsy + i*( Dsj – Dsy ) / j；
J is that number is cut apart in the free form surface transition region;
i=1,2,3,… J。
The concrete numerical value of each point is by following calculative determination on the transition region:
Djb = Dsy + i*( Dsj – Dsy ) / j
Dsy = 4.25D Dsj = 5.25D j = 10
i=1,2,3,… 9
Djb = 4.35D,4.45D,4.55D,…5.15D。
Computing formula (1-3) with Djb and N=1.523 substitution Cjb obtains
Cjb = 8.3174E-3, 8.5086E-3, 8.6998E-3, … 9.84704E-3
X=-36:3:36
Y=12:-3:-12。
With above-mentioned Cjb, X, Y, the computing formula (1-3) of value substitution Zjb, obtaining Zjb is the matrix of 9 row, 25 row:
Zjb =
6.1456 5.2420 4.4230 … 6.1456
6.0119 5.0877 4.2503 … 6.0119
5.9480 5.0025 4.1463 … 5.9480
7.3563 6.2639 5.2773 … 7.3563。
If we represent the shape of ADD100 widescreen Intelligent presbyopic glasses sheet free form surface with Zmg, then:
Zmg = Zsy + Zjb + Zsj。
Zmg =
10.394 9.5313 8.7486 … 10.394
9.5313 8.6743 7.8972 … 9.5313
8.7486 7.8972 7.1249 … 8.7486
13.992 12.792 11.710 … 13.992。
Zmg is the square formation of 25 row, 25 row.We can find out that ball light and the astigmatism distribution of Zmg are not ideal from the value of Zmg, and the shortcoming of processing inconvenience is also arranged, and for this reason, we need to be optimized Zmg.
In order to optimize ADD100 widescreen Intelligent presbyopic glasses sheet free form surface surface, need to write the computer optimization program.We adopt business software zemax.exe to optimize ADD100 widescreen Intelligent presbyopic glasses sheet free form surface surface.In above-mentioned evaluation function, with the various aberrations on widescreen Intelligent presbyopic glasses sheet polynomial expression surface, edge rise for example, diopter D and astigmatism C etc. are as the Optimum Operation number of ZEMAX program.Provide desired value and the weight of these Optimum Operation numbers according to designing requirement, the ZEMAX program will calculate the evaluation function value automatically.The functional value size of our above commentary valency function is estimated the quality of optimal design quality.Work as evaluation function
When reaching minimal value, show that then process of optimization finishes.
Zmg becomes Z after optimizing as stated above,
Z =
11.047 10.103 9.2512 … 11.047
10.145 9.2061 8.3594 … 10.145
9.3304 8.3952 7.5524 … 9.3304
13.040 12.014 11.078 … 13.040。
Z is the square formation of 25 row, 25 row. Z value input numerically-controlled machine just can process the polynomial expression surface of ADD100 widescreen Intelligent presbyopic glasses sheet.
According to above-mentioned Z value, can draw the contour map (referring to Fig. 6) of ADD100 widescreen Intelligent presbyopic glasses sheet surface power and the contour map (referring to Fig. 7) of surface astigmatism degree.
Because diopter D and astigmatism C are optimized, ADD100 widescreen Intelligent presbyopic glasses sheet surface power D varies continuously to 5.25D from 4.25D as can be seen from Figure 6, and the maximum additional astigmatism C in ADD100 widescreen Intelligent presbyopic glasses sheet surface=0.75D. is namely as can be seen from Figure 7:
Maximum additional astigmatism C≤ADD – 0.25 (ADD=1.00D)
Can draw to draw a conclusion from above analysis: ADD100 widescreen Intelligent presbyopic glasses sheet is that luminosity changes continuously, and does not produce the eyeglass of visual fatigue.
ADD150 widescreen Intelligent presbyopic glasses sheet free form surface surface design
Referring to Fig. 2 and Fig. 3, a kind of widescreen intelligence presbyopic lens comprises a front surface 1 and a rear surface 2, and described front surface and rear surface are free form surface, and described free form surface comprises looks far field, near reading range and in the described transition region of looking between far field and the near reading range.
The described far field curved surface of looking is the polynomial expression face, and described shape of looking the far field curved surface is determined by following function:
In the formula, Zsy is for looking the rise that certain point (X, Y) is located on the aspheric surface refracting surface of far field;
Csy is the curvature of looking center, aspheric surface refracting surface summit, far field, and,
；
Dsy is for looking the far field diopter;
N is the refractive index for the production of the material of eyeglass.
As follows depending on far field curved surface given data:
Dsy=3.50D
N=1.523
Csy=3.50/1000*(1.523-1)=6.69216E-3
X=-36:3:36
Y=36:-3:15
With the computing formula (1-1) of above-mentioned data substitution Zsy, obtaining Zsy is the matrix of 8 row, 25 row:
Zsy =
8.9405 8.2057 7.5382 … 8.9405
8.2057 7.4747 6.8106 … 8.2057
7.5382 6.8106 6.1495 … 7.5382
5.1792 4.4634 3.8130 … 5.1792。
Described near reading range curved surface is aspheric surface, and described near reading range curved surface is determined by following function:
In the formula, Zsj is the rise that certain point (X, Y) is located on the near reading range aspheric surface refracting surface;
Csj is the curvature of center, near reading range aspheric surface refracting surface summit, and,
Dsj is the near reading range diopter, and Dsj=Dsy+1.50D;
N is the refractive index for the production of the material of eyeglass.
Near reading range curved surface given data is as follows:
Dsj=Dsy+ADD=3.50+1.50=5.00D
N=1.523 Csy=5.00/1000*(1.523-1)= 9.560229*e-3
X=-36:3:36
Y=-15:-3:-36
With the computing formula (1-2) of above-mentioned data substitution Zsj, obtaining Zsj is the matrix of 8 row, 25 row:
Zsj =
7.5425 6.4819 5.5235 … 7.5425
8.0538 6.9877 6.0243 … 8.0538
8.6617 7.5889 6.6196 … 8.6617
13.226 12.1 11.084 … 13.226。
Described transition region curved surface is determined by following function:
In the formula, Zjb is the rise that certain point (X, Y) is located on the plane of refraction of free form surface transition region;
Cjb is the curvature of center, plane of refraction summit, free form surface transition region, and,
Djb is free form surface transition region plane of refraction diopter;
N is the refractive index for the production of the material of eyeglass;
Djb = Dsy + i*( Dsj – Dsy ) / j；
J is that number is cut apart in the free form surface transition region;
i=1,2,3,… J。
The concrete numerical value of each point is by following calculative determination on the transition region:
Djb = Dsy + i*( Dsj – Dsy ) / j
Dsy = 3.50D Dsj = 5.00D j = 10
i=1,2,3,… 9
Djb = 3.65D,3.80D,3.95D,…4.85D。
Computing formula (1-3) with Djb and N=1.523 substitution Cjb obtains
Cjb = 6.97897E-3, 7.26577E-3, 7.55281E-3, … 9.27342E-3
X=-36:3:36
Y=12:-3:-12。
With above-mentioned Cjb, X, Y, the computing formula (1-3) of value substitution Zjb, obtaining Zjb is the matrix of 9 row, 25 row:
Zjb =
5.1162 4.3692 3.6906 … 5.1162
5.0969 4.3182 3.6113 … 5.0969
5.1295 4.3189 3.5832 … 5.1295
6.8975 5.8772 4.9545 … 6.8975。
If we represent the shape of ADD150 widescreen Intelligent presbyopic glasses sheet free form surface with Zmg, then:
Zmg = Zsy + Zjb + Zsj。
Zmg =
8.9405 8.2057 7.5382 … 8.9405
8.2057 7.4747 6.8106 … 8.2057
7.5382 6.8106 6.1495 … 7.5382
13.226 12.1 11.084 … 13.226。
Zmg is the square formation of 25 row, 25 row.We can find out that ball light and the astigmatism distribution of Zmg are not ideal from the value of Zmg, and the shortcoming of processing inconvenience is also arranged, and for this reason, we need to be optimized Zmg.
In order to optimize ADD150 widescreen Intelligent presbyopic glasses sheet free form surface surface, need to write the computer optimization program.We adopt business software zemax.exe to optimize ADD150 widescreen Intelligent presbyopic glasses sheet free form surface surface.In above-mentioned evaluation function, with the various aberrations on widescreen Intelligent presbyopic glasses sheet polynomial expression surface, edge rise for example, diopter D and astigmatism C etc. are as the Optimum Operation number of ZEMAX program.Provide desired value and the weight of these Optimum Operation numbers according to designing requirement, the ZEMAX program will calculate the evaluation function value automatically.The functional value size of our above commentary valency function is estimated the quality of optimal design quality.Work as evaluation function
When reaching minimal value, show that then process of optimization finishes.
Zmg becomes Z after optimizing as stated above,
Z =
9.6906 8.8910 8.1709 … 9.6906
8.9188 8.1189 7.4003 … 8.9188
8.2221 7.4206 6.7008 … 8.2221
12.564 11.600 10.717 … 12.564。
Z is the square formation of 25 row, 25 row. Z value input numerically-controlled machine just can process the polynomial expression surface of ADD150 widescreen Intelligent presbyopic glasses sheet.
According to above-mentioned Z value, can draw the contour map (referring to Fig. 8) of ADD150 widescreen Intelligent presbyopic glasses sheet surface power and the contour map (referring to Fig. 9) of surface astigmatism degree.
Because diopter D and astigmatism C are optimized, ADD150 widescreen Intelligent presbyopic glasses sheet surface power D varies continuously to 5.00D from 3.50D as can be seen from Figure 8, and the maximum additional astigmatism C in ADD150 widescreen Intelligent presbyopic glasses sheet surface=1.25D. is namely as can be seen from Figure 9:
Maximum additional astigmatism C≤ADD – 0.25 D (ADD=1.50D)
Comparison diagram 1 can find out that ADD150 widescreen Intelligent presbyopic glasses sheet is less than general progressive lenses astigmatism.
Can draw to draw a conclusion from above analysis: ADD150 widescreen Intelligent presbyopic glasses sheet is that luminosity changes continuously, and does not produce the eyeglass of visual fatigue.
The utility model also provides another technical scheme: a kind of widescreen intelligence presbyopic lens prepares mould, comprise a upper bolster 3 and a die shoe 4, described upper bolster 3 and die shoe 4 have respectively for a concave curved surface 31 of moulding lens front surface 1 and rear surface 2 and a convex surface 41.
Described concave curved surface 31 and convex surface 41 are complementary with described front surface 1 and rear surface 2 respectively.
Embodiment 4
All the other are identical with described embodiment 1, and difference is that described front surface is free form surface as described in example 1 above, and described rear surface is aspheric surface.
Embodiment 5
All the other are identical with described embodiment 1, and difference is,, described front surface is aspheric surface, described rear surface is free form surface as described in example 1 above.
Adopt the beneficial effect of above technical scheme to be: first, 0.75D's to 1.50D add the light adjustment because described eyeglass eyeglass has from top to bottom, and add the light even variation, edge astigmatism optimal design, peripheral distortion minimum (the maximum astigmatism in blind area be lower than add that light changes 85%, it is far and near with progressive significantly to be lower than tradition) subtle when wearing, be different from the edge obvious blind area sense of traditional progressive multi-focal lenses; The second, joining the mirror center is geometric center, only has one to read number of degrees measurement zone, and the monochromatic light chemical examination is joined, and need not the laundering period; For general progressive lenses, test that to join be very difficult, the equipment that needs and personnel's quality are very high, generally be difficult for reaching requirement, and our widescreen intelligence presbyopic lens test join just very simple, the same with the monochromatic light lens, join the geometric center that the mirror center is eyeglass, only have a dioptric measured value of read area to be equivalent to the diopter of monochromatic light lens, become the mirror assembling, closely press the design of interpupillary distance difference in size with interior deviator; The 3rd, read area has the inside prism design of substrate, reduces set, wears lighter; The 4th, described widescreen intelligence presbyopic lens can provide 2 meters to the clear visual field of 0.33 meter all distance, be fit to indoor dynamic moving, read a book, see computer, draw, play Mah-Jong, look up the people even see TV, one pair of glasses can easily be tackled, need not to pluck mirror, significantly promote convenience and the comfort level of the indoor dynamic moving of the elderly.
Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (10)
1. widescreen intelligence presbyopic lens, comprise front surface and rear surface, it is characterized in that, described front surface and/or rear surface are free form surface, and described free form surface comprises to be looked far field, near reading range, be located at the described astigmatism district of looking the transition region between far field and the near reading range and being located at both sides, described transition region; Described free form surface is by determining with minor function:
Z is the rise of coordinate points (x, y) in the formula;
C is benchmark vertex of a quadric curvature;
K is the quadric surface constant;
N is polynomial item number;
Ai is polynomial expression surface high-order term coefficient;
2. widescreen intelligence presbyopic lens according to claim 1 is characterized in that described front surface and rear surface are free form surface.
3. widescreen intelligence presbyopic lens according to claim 1 is characterized in that described front surface is free form surface, and described rear surface is aspheric surface.
4. widescreen intelligence presbyopic lens according to claim 1 is characterized in that described front surface is aspheric surface, and described rear surface is free form surface.
5. according to claim 2 to 4 arbitrary described widescreen intelligence presbyopic lenses, it is characterized in that the diopter of described transition region adds light and is adjusted into 0.75D～1.50D, described diopter is considered oneself as the far field to the continuous progressive increase of near reading range; Described diopter is by determining with minor function:
N is the refractive index of lens material in the formula;
Kmax is free form surface point place maximum curvature;
Kmin is free form surface point place minimum curvature.
6. widescreen according to claim 5 intelligence presbyopic lens is characterized in that the maximum astigmatism ratio in described astigmatism district adds the little 0.25D of luminosity, i.e. C≤ADD-0.25, and described astigmatism is by determining with minor function:
N is the refractive index of lens material in the formula;
Kmax is free form surface point place maximum curvature;
Kmin is free form surface point place minimum curvature.
7. the intelligent presbyopic lens eyeglass of widescreen according to claim 6 is characterized in that, described Kmax and Kmin are respectively by determining with minor function:
G is Gaussian curvature in the formula;
H is mean curvature.
8. widescreen intelligence presbyopic lens according to claim 7 is characterized in that the geometric center of described free form surface is made as joins the mirror center and only be provided with a read area diopter.
9. a widescreen intelligence presbyopic lens prepares mould, comprises upper bolster and die shoe, it is characterized in that described upper bolster and die shoe have respectively concave curved surface and the convex surface for moulding lens front surface as claimed in claim 8 and rear surface.
10. widescreen intelligence presbyopic lens according to claim 9 prepares mould, it is characterized in that described concave curved surface and convex surface are complementary with front surface as claimed in claim 8 and rear surface respectively.
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| CN 201220271952 CN202815345U (en) | 2012-06-11 | 2012-06-11 | Wide-screen intelligent presbyopic lens and production mold thereof |
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| CN 201220271952 CN202815345U (en) | 2012-06-11 | 2012-06-11 | Wide-screen intelligent presbyopic lens and production mold thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487946A (en) * | 2012-06-11 | 2014-01-01 | 苏州苏大明世光学股份有限公司 | Wide screen intelligent presbyopic lens and preparation mould thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487946A (en) * | 2012-06-11 | 2014-01-01 | 苏州苏大明世光学股份有限公司 | Wide screen intelligent presbyopic lens and preparation mould thereof |
| CN103487946B (en) * | 2012-06-11 | 2016-02-10 | 苏州苏大明世光学股份有限公司 | Widescreen intelligence presbyopic lens and prepare mould |
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| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU SOOCHOW UNIVERSITY MINGSHI OPTICS CO., LTD. Free format text: FORMER NAME: SUZHOU SUDA MINGSHI OPTICS CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 215000 No. 506 South bell Road, Suzhou Industrial Park, Jiangsu, Suzhou Patentee after: Suzhou SMO Optical Co., Ltd. Address before: 215000 No. 506 South bell Road, Suzhou Industrial Park, Jiangsu, Suzhou Patentee before: Suzhou Suda Mingshi Optics Co., Ltd. |
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Granted publication date: 20130320 Effective date of abandoning: 20160210 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |