CN101151570A - Multi-focal ophthalmic lens with base in prism - Google Patents
Multi-focal ophthalmic lens with base in prism Download PDFInfo
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- CN101151570A CN101151570A CNA2006800106423A CN200680010642A CN101151570A CN 101151570 A CN101151570 A CN 101151570A CN A2006800106423 A CNA2006800106423 A CN A2006800106423A CN 200680010642 A CN200680010642 A CN 200680010642A CN 101151570 A CN101151570 A CN 101151570A
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- prism
- base
- eyeglass
- low coverage
- remote section
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Abstract
A pair of glasses comprises a frame. A first progressive addition lens in the frame comprises a distance portion and a near portion. Diopter power and base in prism gradually increase from the distance portion to the near portion. A second progressive addition lens in the frame comprises a distance portion and a near portion. Diopter power and base in prism gradually increase from the distance portion to the near portion. Base in prism in the first lens may be different from in the second lens. Amount of base in prism may vary in a range of about 0 to 1.5 diopters.
Description
Right of priority
The application requires the provisional application No.60/649 of submission on February 3rd, 2005,487 right of priority.
Technical field
The present invention relates to the to have base-in prism multi-focus lens of (base in prism).
Background technology
Individuality with twenty-twenty vision can change focus according to different distances.Ideally, individuality can focus on distant objects, is referred to as distance vision; Focus on object nearby, be referred to as near vision.The optical system of eyes uses many muscle to focus on as distance vision and near vision.These muscle allow eyes to adjust focus during transition between distance vision and near vision.Relate to various responses in the change focus process from the distance vision to the near vision.These comprise makes that image is more clear, eyes change (turn in) to the inside or change (turn out) and pupil laterally changes size.For example, if eyes sufficiently do not change when near vision to the inside, individuality will be seen ghost image so.
Farsightedness is along with people's age increases degenerating naturally of near vision that the elastic loss by eye lens causes.This can be compensated by wearing " reading " magnifier, and the lenses which correct refraction error of magnifier is so that eyes needn't similarly focus on.Usually having the presbyopic does not need distance correction, and only needs near correction.For avoiding ceaselessly putting on/taking eyes, can use bifocals.Bifocals makes the people can see different distances.Especially, the general bifocals that uses when eyes no longer can correctly change focus from the long distance to the low coverage.Progressive multi-focal mirror (PAL) comprises the continuous variation to smooth, the gradual change of low coverage of remote section and diopter ability (dioptic power).PAL does not have visible line or limit between dioptric change.
When the human Bifocal lenses when remote section carries out the transition to low coverage and partly watches because dioptric increase, eyes do not need to focus on degree the same when not having bifocals.As a result, accommodative convergence reduces to some extent, and this just means that eyes can not required great effort and similarly assembles.This has caused visual fatigue, assembles because eyes use extra amalgamation to assemble as low coverage subsequently.
The present invention is intended to solve above-mentioned one or more problems in the simple mode of novelty.
Summary of the invention
According to the present invention, provide a kind of multi-focus lens that comprises base-in prism.
According to an aspect of the present invention, disclose a kind of improvement of the progressive multi-focal eyeglass that comprises remote section and low coverage part, wherein refractive power part from the remote section to the low coverage increases gradually.This improvement comprises the inside prism in the end in the eyeglass, and wherein the amount of base-in prism partly increases from the remote section to the low coverage.
A feature of the present invention is that base-in prism changes in about 0 to 1.5 dioptric scope.
Another feature of the present invention is to introduce base-in prism by part from the remote section to the low coverage with the thickness that different amounts changes eyeglass.
Another feature of the present invention is to make the photocentre off-center of eyeglass introduce base-in prism by part from the remote section to the low coverage with different amounts.
According to another aspect of the present invention, a kind of progressive lenses that comprises remote section, center section and low coverage part is disclosed.Refractive power and base-in prism change continuously at the center section between remote section and low coverage part.
According to another aspect of the invention, a kind of pair of eyeglasses that comprises mirror holder is disclosed.The first progressive multi-focal eyeglass in the mirror holder comprises remote section and low coverage part.Refractive power and base-in prism part from the remote section to the low coverage increases gradually.The second progressive multi-focal eyeglass in the mirror holder comprises remote section and low coverage part.Refractive power and base-in prism part from the remote section to the low coverage increases gradually.
A feature of the present invention is that the base-in prism in first eyeglass is different from the base-in prism in second eyeglass.
According to a further aspect of the invention, a kind of progressive multi-focal eyeglass that comprises remote section, center section and low coverage part is disclosed.Refractive power changes continuously at the center section between remote section and low coverage part.The base-in prism of low coverage part is greater than the base-in prism of remote section.
According to another aspect of the invention, a kind of Bifocal lenses that comprises remote section and low coverage part is disclosed.The refractive power of low coverage part is greater than the refractive power of remote section.The base-in prism of low coverage part is greater than the inside prism in the end of remote section.
More feature of the present invention and advantage will be conspicuous from explanation and accompanying drawing.
Description of drawings
Fig. 1 is according to the part front elevation of glasses of the present invention, and it comprises the multi-focus lens according to progressive multi-focal eyeglass form of the present invention;
Fig. 2 is the front elevation according to the glasses that comprise the progressive multi-focal eyeglass of prior art;
Fig. 3 is the front view that is similar to Fig. 2, and its section line schematically illustrates the eyeglass configuration among the sectional view 3A-3D;
Fig. 4 is the front elevation that comprises the glasses of progressive multi-focal eyeglass according to of the present invention;
Fig. 5 is the front elevation that is similar to Fig. 4, and its section line schematically illustrates the eyeglass configuration among the sectional view 5A-5D; And
Fig. 6 is the sketch plan of the usage variance of eyeglass among eyeglass and Fig. 4 in the key diagram 2.
Embodiment
The present invention relates to the use of base-in prism, this base-in prism is increased to the visual demand of multi-focus lens to reduce to assemble near vision.The base-in prism that increases allows the people to reduce the needs of assembling when partly watching by the eyeglass that is designed to auxiliary near vision.Especially, the amount of prismatic effect changes from the distance correction to the near correction.
According to the present invention, the continuous variation that adds in-degree part from the remote section to the low coverage of progressive multi-focal eyeglass is replenished by the increase of the base-in prism of part from the remote section to the low coverage.This has reduced the needs that glasses are assembled when low coverage, therefore reduced asthenopia.The desired amount that the amount of base-in prism is assembled minimizing as required changes with adding in-degree (add power), but always is equal to or greater than every eyeglass 0.50 diopter probably.In one exemplary embodiment of the present invention, the amount of base-in prism changes in the dioptric scope of about 0 to 1.5 every mirror, but this scope can also be bigger, for example about 0-3 diopter.
The progressive multi-focal eyeglass is a kind of eyeglass with at least one progressive multi-focal surface, and this surface can be placed on a certain side of eyeglass or the bilateral or be positioned at the inside of eyeglass itself.With reference to figure 1, progressive multi-focal eyeglass 10 has been shown in the mirror holder 12.Bright mirror sheet 10 by with dashed lines separates the different piece of eyeglass 10.Especially, center section 18 separates remote section 14 and low coverage part 16.Define different parts with aspheric progressive surface, wherein, remote section 14 links to each other with the refractive power of low coverage part 16 by the increase of the change of the smooth and continuous 16 center sections 18 from remote section 14 to the low coverage part.Use the distance vision correcting value at remote section 14, represent with diopter." adding in-degree " is the amount that is increased to the refractive power difference of the range correction in low coverage part 16 and the center section 18.According to the present invention, base-in prism is increased to eyeglass 10.Base-in prism be wherein image by the bending of the light that moved towards the summit.According to the present invention, the base-in prism in low coverage part 16 is greater than the inside prism in the end of remote section.Equally, base-in prism increases in the center section 18 between remote section 14 and low coverage part 16 gradually.
With reference to figure 2, the pair of eyeglasses 20 of prior art comprises mirror holder 22, and it supports the first progressive multi-focal eyeglass 24 and the second progressive multi-focal eyeglass 26.As is known, each eyeglass can have the basic refractive ability of the range correction that is used for any needs.The position that is cited as A, B, C, D and E represents that progressive surface provides adds in-degree and horizon prism, as follows:
The position
Add in-degree
Horizon prism
A+0.00 can be ignored
B+0.50 can be ignored
C+1.00 can be ignored
D+1.50 can be ignored
E+2.00 can be ignored
Fig. 3 show with Fig. 3 in identical glasses 20, and for Fig. 3 A, 3B, 3C and 3D provide profile line, illustrate that schematically the change that two light along with eyeglass add in-degree does not have extra base-in prism to be increased to eyeglass.This schematically illustrates by the xsect that shows even lens thickness.
In a kind of progressive multi-focal eyeglass of form, the front of eyeglass is round, and comprises aspheric curve.This curve bottom in front is steeper.So, bifocal correction is placed on this front.The different in-degrees that adds is used different moulds.The back side of eyeglass also is round, and process machining is to provide the range correction of any needs.Like this, the correction at arbitrary portion place comprises the basic combination of proofreading and correct and adding in-degree.
As conspicuous to those skilled in the art, use this representative ophthalmic lens, the actual positive curvature of face is to change from the top to bottom.This is owing to used aspheric front.This aspect does not describe in the sectional view of Fig. 3 A-3D.On the contrary, these sectional views have been ignored this aspheric curve, to specify that not having extra base-in prism from a sectional view to another sectional view is increased to eyeglass.
With reference to figure 4, the pair of eyeglasses 30 of prior art comprises mirror holder 32, and it supports according to the first progressive multi-focal eyeglass 34 of the present invention and the second progressive multi-focal eyeglass 36.As is known, each eyeglass can have the basic refractive ability that is used for necessary arbitrarily range correction.The position that is cited as F, G, H, I and J represents that progressive surface provides adds in-degree and horizon prism, as follows:
The position
Add in-degree
Horizon prism
F+0.00 0.00 end, is inside
G+0.50 0.25 end, is inside
H+1.00 0.75 ends, are inside
I+1.50 1.00 ends, are inside
J+2.00 1.50 ends, are inside
Fig. 5 show with Fig. 5 in identical glasses 30, and, the change that adds in-degree along with two light of eyeglass is described schematically for Fig. 5 A, 5B, 5C and 5D provide profile line, extra base-in prism is added to eyeglass.As above, aspheric curve has been ignored in these cross sections, has the inside prism of extra substrate to be increased to eyeglass to specify from a sectional view to another sectional view.
Particularly, these cross-sectional view strengths among Fig. 5 A-5D schematically illustrate the increase of base-in prism, it is by the increase of the curvature on the side of eyeglass and the increase representative of thickness, and base-in prism extends downwards in eyeglass, is added to the back side of eyeglass as it.As conspicuous to those skilled in the art, base-in prism is not the change by curvature as illustrated to increase.On the contrary, schematically being explained is xsect for comparison diagram 5A-5D and Fig. 3 A-3D, the base-in prism that increases gradually with explanation.Alternatively, can introduce base-in prism, resulting prism will occur by photocentre off-center that makes eyeglass rather than the thickness that increases eyeglass by resulting prism.
The amount of the base-in prism in each eyeglass 34 and 36 may be identical, but also may be different.
Fig. 6 shows the effect of the eyeglass of Fig. 2 is compared the effect of base-in prism with the eyeglass of Fig. 4.Particularly, eyeglass 42 is placed on the front of each eye 40, and eyes 40 use near visions to focus on a little on 44.Line 46 expressions of intersecting at point 44 have the eyes direction that normal low coverage eyes are assembled.This progressive multi-focal eyeglass that shows by prior art is how to watch object.Do not meet at a little 44 the eyes direction of two lines, 48 expressions when before eyes 40, placing base-in prism.As shown by arrows, the more outside commentaries on classics of eyes is because they unnecessaryly carry out same convergence to watch a little 44 represented identical objects.On the contrary, base-in prism makes picture deflection, and when aliging with line 48 with convenient eyes, eyeglass 42 makes eyes can see a little 44.The feasible eyes that seem concerning the user of this prismatic correction have been assembled, and promptly eyes change to the inside, and also needn't do so in fact.
Can make with the method for any conventional and the known materials that all are suitable for eyeglass production according to eyeglass of the present invention.These materials can comprise all glass, polycarbonate, polymethyl acrylate (poly methylcry late) and other high-index materials.Further, this eyeglass can be with any suitable technique manufacturing, and described technology includes but not limited to grinding, casting, lamination, surperficial casting, thermoforming or its combination.
Although with regard to form is that the how burnt eyepiece of progressive multi-focal eyeglass specifically describes the present invention, notion of the present invention can be applied to non-progressive lenses, for example bifocals or trifocal.
Therefore, according to the present invention, provide a kind of how burnt eyepiece, wherein the base-in prism in the low coverage part is greater than the base-in prism in the remote section, perhaps alternatively, consistent with the refractive power variation, base-in prism changes between remote section and low coverage part continuously.
Claims (21)
1. a progressive multi-focal eyeglass comprises remote section and low coverage part, and wherein refractive power part from the remote section to the low coverage increases gradually, improves the base-in prism that comprises in the eyeglass, and wherein the amount of base-in prism partly increases from the remote section to the low coverage.
2. the improvement of claim 1, wherein the amount of base-in prism is approximately changing in the dioptric orientation of 0-1.5.
3. the improvement of claim 1 is wherein introduced base-in prism by part from the remote section to the low coverage with the thickness that different amounts changes eyeglass.
4. the improvement of claim 1 wherein makes the photocentre off-center of eyeglass introduce base-in prism by part from the remote section to the low coverage with different amounts.
5. a progressive multi-focal eyeglass comprises remote section, center section and low coverage part, and wherein refractive power and the base-in prism center section between remote section and low coverage part changes continuously.
6. the progressive multi-focal eyeglass of claim 5, wherein the amount of the inside prism in the end is approximately changing in the dioptric scope of 0-1.5.
7. the progressive multi-focal eyeglass of claim 5 is wherein introduced base-in prism by the center section between remote section and low coverage part with the thickness that different amounts changes eyeglass.
8. the progressive multi-focal eyeglass of claim 5 wherein makes the photocentre off-center of eyeglass introduce base-in prism by the center section between remote section and low coverage part with different amounts.
9. a pair of glasses comprises:
Mirror holder;
The first progressive multi-focal eyeglass in the mirror holder, it comprises remote section and low coverage part, wherein refractive power and base-in prism part from the remote section to the low coverage increases gradually; And
The second progressive multi-focal eyeglass in the mirror holder, it comprises remote section and low coverage part, wherein refractive power and base-in prism part from the remote section to the low coverage increases gradually.
10. a pair of glasses of claim 9, wherein the amount of the base-in prism in each eyeglass is approximately changing in the dioptric scope of 0-1.5.
11. a pair of glasses of claim 9 is wherein introduced base-in prism in each eyeglass by the thickness that changes eyeglass with different amounts between remote section and low coverage part.
12. a pair of glasses of claim 9 is wherein by making the photocentre off-center of eyeglass introduce base-in prism in each eyeglass with different amounts between remote section and low coverage part.
13. a pair of glasses of claim 9, wherein the amount of the base-in prism in first lens is different from the amount of the base-in prism in second eyeglass.
14. progressive multi-focal eyeglass, comprise remote section, center section and low coverage part, wherein refractive power changes continuously at the center section of remote section and low coverage part, and wherein the base-in prism in the low coverage part greater than the base-in prism in the remote section.
15. the progressive multi-focal eyeglass of claim 14, wherein the difference of the amount of the base-in prism between low coverage part and the remote section is at least 0.5 diopter.
16. the progressive multi-focal eyeglass of claim 14, wherein the amount of base-in prism is approximately changing in the dioptric scope of 0-1.5.
17. the progressive multi-focal eyeglass of claim 14, wherein the amount of base-in prism is approximately changing in the dioptric scope of 0-3.
18. a Bifocal lenses comprises remote section and low coverage part, wherein the refractive power of low coverage part is greater than the diopter of remote section, and wherein the base-in prism in the low coverage part greater than the base-in prism in the remote section.
19. the Bifocal lenses of claim 18, wherein the difference of the amount of the base-in prism between low coverage part and the remote section is at least 0.5 diopter.
20. the Bifocal lenses of claim 18, wherein the amount of base-in prism is approximately changing in the dioptric scope of 0-1.5.
21. the Bifocal lenses of claim 18, wherein the amount of the inside prism in the end is approximately changing in the dioptric scope of 0-3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US64948705P | 2005-02-03 | 2005-02-03 | |
| US60/649,487 | 2005-02-03 | ||
| US11/078,891 | 2005-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101151570A true CN101151570A (en) | 2008-03-26 |
Family
ID=39251289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800106423A Pending CN101151570A (en) | 2005-02-03 | 2006-02-01 | Multi-focal ophthalmic lens with base in prism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101151570A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368119A (en) * | 2011-10-15 | 2012-03-07 | 付祖家 | Multifunctional myopic control eyeglass |
| CN104020584A (en) * | 2013-03-01 | 2014-09-03 | 埃西勒国际通用光学公司 | Method for optimizing postural prism of ophthalmic lens |
| CN107111159A (en) * | 2014-12-26 | 2017-08-29 | 豪雅镜片泰国有限公司 | A pair of eyeglass, its manufacture method, feed system and the supply program of eyes |
| CN107111160A (en) * | 2014-12-26 | 2017-08-29 | 豪雅镜片泰国有限公司 | A pair of eyeglass, its manufacture method, feed system and the supply program of eyes |
| CN107111158A (en) * | 2014-12-26 | 2017-08-29 | 豪雅镜片泰国有限公司 | Eyeglass, its manufacture method, feed system and supply program |
| CN109937377A (en) * | 2016-10-09 | 2019-06-25 | 眼脑医疗股份有限公司 | Eyeglass with axis extrinsic curvature center |
-
2006
- 2006-02-01 CN CNA2006800106423A patent/CN101151570A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368119A (en) * | 2011-10-15 | 2012-03-07 | 付祖家 | Multifunctional myopic control eyeglass |
| CN102368119B (en) * | 2011-10-15 | 2013-04-17 | 付祖家 | Multifunctional myopic control eyeglass |
| CN104020584A (en) * | 2013-03-01 | 2014-09-03 | 埃西勒国际通用光学公司 | Method for optimizing postural prism of ophthalmic lens |
| CN104020584B (en) * | 2013-03-01 | 2018-03-16 | 依视路国际公司 | Method for being optimized to the position prism of ophthalmic len |
| CN107111159A (en) * | 2014-12-26 | 2017-08-29 | 豪雅镜片泰国有限公司 | A pair of eyeglass, its manufacture method, feed system and the supply program of eyes |
| CN107111160A (en) * | 2014-12-26 | 2017-08-29 | 豪雅镜片泰国有限公司 | A pair of eyeglass, its manufacture method, feed system and the supply program of eyes |
| CN107111158A (en) * | 2014-12-26 | 2017-08-29 | 豪雅镜片泰国有限公司 | Eyeglass, its manufacture method, feed system and supply program |
| CN107111160B (en) * | 2014-12-26 | 2019-11-15 | 豪雅镜片泰国有限公司 | A pair of of eyeglass, its manufacturing method, feed system and the computer-readable recording medium of eyes |
| US10578887B2 (en) | 2014-12-26 | 2020-03-03 | Hoya Lens Thailand Ltd. | Pair of spectacle lenses for binocular vision, manufacturing method, supply system and supply program thereof |
| CN109937377A (en) * | 2016-10-09 | 2019-06-25 | 眼脑医疗股份有限公司 | Eyeglass with axis extrinsic curvature center |
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Open date: 20080326 |