CN203250079U - Gradually zooming lens for middle and near distance presbyopia - Google Patents
Gradually zooming lens for middle and near distance presbyopia Download PDFInfo
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- CN203250079U CN203250079U CN 201320118869 CN201320118869U CN203250079U CN 203250079 U CN203250079 U CN 203250079U CN 201320118869 CN201320118869 CN 201320118869 CN 201320118869 U CN201320118869 U CN 201320118869U CN 203250079 U CN203250079 U CN 203250079U
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Abstract
The utility model discloses a gradually zooming lens for middle and near distance presbyopia. The gradually zooming lens comprises a middle area, a near area, a gradual area and aberration areas, wherein the middle area is located at the upper part of the lens; the near areas are located at the lower part of the lens; the gradual area is located between the middle area and the near area; and the aberration areas are formed on two side of the gradual area; the near area is designed through single light, an optical center, namely, a near reference point is designed in the near area, and no aberration areas exist on two sides of the optical center in a horizontal direction, the vision of the near area of the lens is wide enough, so that a spectacle has a clear and stable function for staring a near object, and the lens can provide available middle and near distance eyesight when required on the basis that the eyesight is well guaranteed.
Description
Technical field
The utility model relates to presbyopia visional compensation eyeglass, espespecially a kind of in presbyopia gradual change focus lens closely.
Background technology
With advancing age, human eye is inevasible, and presbyopia can occur, and so-called presbyopia is the phenomenon of eyes regulatory function decay, is exactly that eyes are when watching close-target attentively, crystalline lens can not produce positive burnt power fully, thereby amphiblestroid conjugate focus can't be focused on the in-plant fixation object.At present, be used for correcting the eyeglass following points of presbyopia:
1. single burnt presbyopia glasses
Single burnt presbyopia glasses are the optical male lens with positive burnt power, alternative lenticular function that can part, and the help eyes are clearly watched close-target attentively.But when eye gaze target far away, single burnt presbyopia glasses but can not be eliminated positive burnt power as crystalline lens as required.Therefore having on the solstics that single burnt presbyopia glasses can see clearly is the focus of the additional luminosity of presbyopia, and the scope beyond the focus does not all see Chu.Hence one can see that, and singly burnt presbyopia glasses are to watch close-target attentively as purpose, and the while must see far as cost take sacrifice.Therefore wear presbyopia glasses person, all glasses must be taken when watching slightly at a distance target attentively, it is very inconvenient to use.
2. bifocal presbyopia glasses and three warmers presbyopia glasses
Be produced in same the spectacle-frame with two kinds of eyeglasses seeing nearly different focal powers seeing far, be called bifocal spectacle.The top of glasses is called main leaf for far using up the district; The below is called sub-sheet for closely using up the district.The disadvantage of bifocal presbyopia glasses can produce image-jumping phenomenon and afocal phenomenon exactly.
When sight line by bifocal spectacle far use up the optical centre in district the time, can not produce any prism effect.But when rotating when directing one's eyes downward, the prism effect of main leaf increases gradually, when sight line is crossed over boundary's edge, suddenly meets with downward prism effect at the bottom of the sub-sheet, and fixation object picture generation upward displacement is called picture and jumps (such as Fig. 1).Picture is jumped the below that the illusion that produces occurs in the visual field, often disturbs wearer's closely vision, causes to use inconvenience.
The sub-sheet of bifocal spectacle is divided into upper sub-sheet and lower sub-sheet, and upper sub-sheet is specialized in and is watched middle close-in target attentively, is called the three warmers glasses.Although the three warmers glasses have reduced main leaf to the focal power drop between the sub-sheet, but still can not avoid image-jumping phenomenon.
In addition, the photopic vision scope of bifocal spectacle is separated into two sections, namely far uses up the photopic vision scope in district and closely uses up the photopic vision scope in district, there is one between the two far with eyeglass and the nearly scope that all can not see clearly with eyeglass, be called the afocal district, and with advancing age, the scope in afocal district can be increasing.The three warmers glasses are provided with the intermediate light school district, can remedy the use inconvenience that the afocal district that exists between the bifocal spectacle instant and near light school district brings.But with advancing age, afocal district scope increases gradually, and the photopic vision scope in intermediate light district can not cover the afocal district fully, so the three warmers glasses can not be avoided the afocal phenomenon equally.
3. progressive burnt glasses
Traditional presbyopia gradual change focus lens is for far closely using presbyopia (such as Fig. 2) with zero diopter, from Functional Design, can solve far away the low coverage use.But the actual very large obstacle of especially near time spent existence that uses is embodied in:
1) near being positioned at district 91 of traditional progressive focus lens 9 joined mirror cross 92 belows approximately about 18mm, and the amount of moving is about 2-3mm in the nasal side, is equivalent to eyeglass nose lower edge, progressive focus lens near usually much lower than normal short sight point position with distinguishing 91.The wearer needs sight line is moved down as far as possible when watching close-target attentively, and lower chin is little upwards to be lifted, and meeting of a specified duration produces watches fatigue attentively.
2) enough roomy in order to guarantee the visual field with optical zone 93 far away, top, 94 positions, aberration district of conventional progressive burnt glasses both sides on the lower side so that the progressive district 95 of progressive burnt glasses and near comparatively narrow with district 91.Nearly size with 91 visuals field, district is to estimate the leading indicator of progressive focus lens 9 designing qualities, is subjected to eyeglass gradual change degree, presbyopia luminosity, and individuality is for the demand of near vision, on the impact of the factors such as the tolerance of eyeglass aberration and adaptive faculty.Presbyopia luminosity is that the progressive burnt glasses of modern soft design of 2.00D are when seeing the 33cm close-target according to investigations, visual field width is about 12.5cm fully clearly, and the integral width of A4 printer paper is 18cm, therefore progressive burnt glasses closely cover not the reading thing with the visual field, a little rolls the neck to enlarge the fixation range of sight line to need the left and right sides, and meeting of a specified duration produces the neck fatigue symptom such as ache.Other label lists are shown among Fig. 2: 96 is that the circle of reference, 97 of using far away is for closely using circle of reference, 98 to be the alignment target line.
3) the design hemisphere little just as the hemisphere that the top is large and below of the burnt glasses of gradual change docks, near the sphere of the both sides the docking point can seamlessly transit by the curvature gradual change, and from docking point two lateral extents more away from, the drop of two spheres is larger, the final aberration district that forms, if sight line, then causes deformation of image and fuzzy (such as Fig. 3) by the aberration district.Conventional progressive burnt glasses are to watch target far away attentively as fundamental purpose, and therefore far away have optical centre with the district, although far with circle of reference not at optical centre, prism effect and not quite.And in, in-plant eyesight uses less, therefore closely there is not optical centre with the district, and prism effect is larger, sight line is closely moving up and down with the district, eyeglass all changes to focal power and the prism that eyes show, eyes need constantly to adapt to for the change of the optical property of eyeglass, and therefore the burnt glasses of traditional gradual change are not suitable for carrying out for a long time closely operation.
Because mainly correcting defects of vision of presbyopia crowd be low coverage (25-33CM) and middle distance (33-250CM), in closely gradual change Jiao's design urgent demand has just been arranged.Have in recent years diversified in closely the burnt design of gradual change and product come out, but shortcoming with middle low coverage use order ground Serious conflicts is arranged.Specific as follows:
1) closely closely use diopter of correction with the narrow and higher problem of prism degree post mirror degree in district in the situation that satisfy for overcoming, design ADD(far with the absolute value of the number of degrees and nearly difference with the number of degrees, namely adds down luminosity) be+0.50D ~+0.60D.This design is commonly called as " anti-tired ", and relatively traditional gradual change Jiao can improve the nearly quality of use preferably, but owing to ADD is too small, eyeglass service range span only have 33cm(closely use+1.00D) to 7.5cm(closely use+4.00D).In fact do not exist middle distance to use.
2) also have a kind of design to propose, namely in the CN201075153Y Chinese utility model patent of Granted publication on June 18th, 2008, the characteristics of this design be super fat pipe (18 ~ 20mm) and ADD be+1.25D, satisfy simultaneously the comfortable use of zone of transition and enough service ranges (such as Fig. 4), but the nearly visual field width with the district that should design is still not enough, the aberration district of its both sides still makes and closely can not cover the reading thing with the visual field, need the left-right rotation neck when causing reading, and meeting of a specified duration produces the problem that neck is ached.And the super fat pipe design of this patent has no also product-free evidence of the theoretical feasibility of calculating.
The utility model content
Technical problem to be solved in the utility model is to provide the presbyopia gradual change focus lens that closely uses in a kind of can meeting fully, it is closely narrow with the district that it can solve traditional gradual change focus lens simultaneously, not good and " anti-tired " the limited problem of gradual change focus lens service range of optical characteristics, and can see as required the fixation object of middle distance clearly.
For solving the problems of the technologies described above, technical solution of the present utility model is:
Presbyopia gradual change focus lens closely in a kind of, comprise be arranged in the eyeglass top with the district, be positioned at the eyeglass below near with the district, between the two the transition region and the aberration district of both sides, transition region formation; Described near with distinguishing as monochromatic light designs, be designed with optical centre in it and namely closely use reference point, the aberrationless district, horizontal direction both sides of this optical centre.
The Design of the piece shape of described eyeglass is: the focal power primary system one with reference point and above zone in its front surface is+the single arc sphere of 5.20D, from up to down radius-of-curvature is dwindled gradually afterwards, positive focal power increases gradually, the front surface of described eyeglass closely with reference point and with the focal power value of lower area be designed to+6.20D ~+the single arc sphere of 7.20D; The eyeglass rear surface is-5.40D ~-the approximate single arc-curve face of 4.40D; Middle with the circle of reference focal power according to different size be designed to zero diopter ,+0.25D ,+0.50D ,+0.75D and+1.00D; Near commonly use luminosity with the circle of reference focal power according to presbyopia and be designed to+1.00 ,+1.50D ,+2.00D ,+2.50D and+3.00D.
Describedly middlely also be designed with the middle reference point of use with the district, can be 10mm with reference point to the up and down vertical height of described near usefulness circle of reference in this.
The geometric center top 6 ~ 8mm of described eyeglass uses reference point in being.
The width of described transition region is 8mm ~ 10mm.
Described eyeglass geometric center below 0mm ~ 2mm also moves 2.5mm for closely using circle of reference in nasal side.
After adopting such scheme, because the protruding spherical lens (namely closely with district for monochromatic light design) of most of zone, the middle below of gradual change focus lens described in the utility model for having complete optical texture, possess the steady and audible function of watching close-target attentively, can carry out for a long time closely operation.The upper area of eyeglass reduces the presbyopia focal power gradually, in can seeing clearly as required, remote fixation object.More particularly the utlity model has following design feature:
1) since optical centre is arranged near with the district, and aberrationless district, optical centre horizontal direction both sides, thus just the nearly visual field with the district is enough roomy, closely with sight line point near with distinguishing optical centre, make the wearer obtain the steady and audible eyesight of closely using.
2) in order to satisfy the presbyopia glasses wearer needs of all ages and classes, presbyopia focal power+1.00D ~ 3.00D is set, has contained presbyopia glasses wearer additional power range commonly used.
3) when presbyopia surpass+more than the 1.00D, wearer's adjusting near point moves far gradually, therefore can suitably increase a small amount of positive focal power with the district middle, can make first 5m more clear with interior eyesight, can dwindle simultaneously making the middle district that uses to nearly focal power drop with distinguishing, receive the effect of gradual change passage broadening.
In addition, the utility model and existing presbyopia glasses relatively have following advantage:
1. compare with single burnt presbyopia glasses
1) most of zone, the middle below of the burnt presbyopia glasses of gradual change described in the utility model is identical with single burnt presbyopia glasses, has therefore kept the steady and audible function of watching close-target attentively of single burnt presbyopia glasses.
2) differently from single burnt presbyopia glasses be: the upper area of gradual change focus lens described in the utility model is designed to the progressive multifocal optical texture, therefore possess available in, remote eyesight.The wearer suitably moves the upper area of sight line to glasses under the state that has on the presbyopia glasses as required, in seeing clearly, remote target.For example the wearer utilize for a long time the burnt presbyopia glasses of gradual change described in the utility model in, lower zone is engaged in closely operation, when needed can, can be with the upper area of sight line transmitted through glasses, clearly see the data that bookshelf top different distance need to be read clearly, perhaps can with the upper area of sight line transmitted through glasses, clearly see the visitor of far and near different distance clearly.Effectively overcome can not far using and the narrow shortcoming of photopic vision scope of single burnt presbyopia glasses.
2. compare with bifocal presbyopia glasses, three warmers presbyopia glasses
1) the burnt presbyopia glasses of gradual change described in the utility model near with Qu Zhizhong, far with the focal power of distinguishing for gradually changing, prism effect progressively increases, therefore do not have clear and definite regional boundary edge, the prism sudden change of bifocal presbyopia glasses or three warmers presbyopia glasses circle edge can not occur, do not have image-jumping phenomenon.
2) the burnt presbyopia glasses of gradual change described in the utility model near with Qu Zhizhong, far with the focal power of distinguishing for gradually changing, can contain and watch attentively from closely to the target of all gaze distance far away, therefore the afocal district of bifocal presbyopia glasses, three warmers presbyopia glasses has been eliminated in success effectively.
With traditional progressive burnt glasses relatively
1) geometric center that closely is positioned at glasses with blinkpunkt of the burnt presbyopia glasses of gradual change described in the utility model below partially meets the sight line sensing focal power of not wearing glasses when watching close-target attentively, closely watches fatigue attentively with not bringing out for a long time.
2) most of zone, below is the protruding spherical lens with complete optical texture in the burnt presbyopia glasses of gradual change described in the utility model, field range with do not wear glasses close when watching close-target attentively, therefore do not need to improve nearly fixation range by adjusting the head position, long-time closely with the fatigue symptom such as can not bring out that neck is ached.
3) conventional progressive burnt glasses are to watch target far away attentively as fundamental purpose, advantage be far away possess stable eyesight with distinguishing, roomy field of vision and less prism effect, in can seeing clearly the short time when needed, in-plant target, shortcoming is to be not suitable for carrying out for a long time closely operation.
Description of drawings
Fig. 1 is the structural representation that existing bifocal spectacle produces image-jumping phenomenon;
Fig. 2 is the structural representation of traditional progressive focus lens;
Fig. 3 is the design concept figure of traditional progressive focus lens;
Fig. 4 is that notification number is the described disclosed lens structure schematic diagram of Chinese utility model patent of CN201075153Y;
Fig. 5 is structural representation of the present utility model;
Fig. 6 is Design of the piece shape schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The utility model discloses be a kind of in presbyopia gradual change focus lens closely, such as Fig. 5 and shown in Figure 6, be preferred embodiment of the present utility model.Described gradual change focus lens 1 comprises middle with district 101, transition region 102, near with district 103 and aberration district 104, the described middle top that is positioned at eyeglass with district 101, closely being positioned at the below of eyeglass with district 103, is transition region 102 between the two, and the both sides of transition region 102 form aberration district 104.
Key of the present utility model is: the described nearly district 103 that uses is designed with optical centre 105 for monochromatic light designs in it, the aberrationless district, horizontal direction both sides of this optical centre 105, and this optical centre 105 is the near with reference point 107 of eyeglass.
Further, describedly middlely can be 10mm with the middle of district 101 with reference point 106 to nearly nearly up and down vertical height with circle of reference 120 upper limbs with district 103, like this, the user carries out middle low coverage when changing, and the optical axis changes angle less than 14.3 degree, and jumps sense without picture.
The geometric center 108 tops 6 ~ 8mm of described eyeglass 1 is middle with reference point 106, and the width of described transition region can be 8mm ~ 10mm.Eyeglass geometric center 108 below 0mm ~ 2mm also move 2.5mm for closely using circle of reference 120 in nasal side.
The Design of the piece shape of described gradual change focus lens 1 can be (as shown in Figure 6):
The middle focal power primary system one with reference point 106 and above zone of its front surface be+5.20D(uses circle of reference 109 front radius of curvature R 1 namely) and single arc sphere, from up to down radius-of-curvature is dwindled gradually afterwards, positive focal power increases gradually, the front surface of described eyeglass closely with reference point 107 and with the focal power value of lower area be designed to+6.20D ~+7.20D(namely closely uses circle of reference 120 front radius of curvature R 2) single arc sphere; The eyeglass rear surface is-5.40D ~-4.40D(namely after radius of curvature R) approximate single arc-curve face; Middle with circle of reference 109 focal powers according to different size be designed to zero diopter ,+0.25D ,+0.50D ,+0.75D and+1.00D; Near commonly use luminosity with circle of reference 120 focal powers according to presbyopia and be designed to+1.00 ,+1.50D ,+2.00D ,+2.50D and+3.00D.
What need to explain is: reference point claims again the design basis point, and the concave-sphere value (D) of this point determines the eyeglass focal power, and prism values and substrate orientation must meet request for utilization, and post mirror franchise will meet the GB requirement.And circle of reference is used for showing the position of reference point, indicate simultaneously the measurement range that meets design load, because eyeglass is Random Curved Surface Designing, measured value just changes so measuring condition slightly changes, get final product therefore measure design load in the reference encircled energy, so reference point unanimously defines different with the circle of reference value.
Like this, the specification type of described gradual change focus lens 1 can comprise following several:
| Near with district (D) | +1.00 | +1.50 | +2.00 | +2.50 | +3.00 |
| Far away from district (D) | 0.00 | +0.25 | +0.50 | +0.75 | +1.00 |
The above is preferred embodiment of the present utility model only, is not to limit the scope that the utility model is implemented.Therefore variation or the modification in every case done according to claim of the present utility model and instructions all should belong within the scope that the utility model patent contains.
Claims (6)
1. presbyopia gradual change focus lens closely in a kind is characterized in that: comprise be arranged in the eyeglass top with the district, be positioned at the eyeglass below near with the district, between the two the transition region and the aberration district of both sides, transition region formation; Described near with distinguishing as monochromatic light designs, be designed with optical centre in it and namely closely use reference point, the aberrationless district, horizontal direction both sides of this optical centre.
2. presbyopia gradual change focus lens closely in according to claim 1, it is characterized in that: the Design of the piece shape of described eyeglass is: the focal power primary system one with reference point and above zone in its front surface is+the single arc sphere of 5.20D, from up to down radius-of-curvature is dwindled gradually afterwards, positive focal power increases gradually, the front surface of described eyeglass closely with reference point and with the focal power value of lower area be designed to+6.20D ~+the single arc sphere of 7.20D; The eyeglass rear surface is-5.40D ~-the approximate single arc-curve face of 4.40D; Middle with the circle of reference focal power according to different size be designed to zero diopter ,+0.25D ,+0.50D ,+0.75D and+1.00D; Near commonly use luminosity with the circle of reference focal power according to presbyopia and be designed to+1.00 ,+1.50D ,+2.00D ,+2.50D and+3.00D.
3. presbyopia gradual change focus lens closely in according to claim 1 and 2 is characterized in that: described middle with being 10mm with reference point to nearly nearly up and down vertical height with the circle of reference upper limb with the district in the district.
4. presbyopia gradual change focus lens closely in according to claim 1 and 2, it is characterized in that: the geometric center top 6 ~ 8mm of described eyeglass uses reference point in being.
5. presbyopia gradual change focus lens closely in according to claim 1 and 2, it is characterized in that: the width of described transition region is 8mm ~ 10mm.
6. presbyopia gradual change focus lens closely in according to claim 1 and 2, it is characterized in that: described eyeglass geometric center below 0mm ~ 2mm also moves 2.5mm for closely using circle of reference in nasal side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320118869 CN203250079U (en) | 2013-03-15 | 2013-03-15 | Gradually zooming lens for middle and near distance presbyopia |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320118869 CN203250079U (en) | 2013-03-15 | 2013-03-15 | Gradually zooming lens for middle and near distance presbyopia |
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| CN203250079U true CN203250079U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320118869 Expired - Fee Related CN203250079U (en) | 2013-03-15 | 2013-03-15 | Gradually zooming lens for middle and near distance presbyopia |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107615138A (en) * | 2015-05-26 | 2018-01-19 | 豪雅镜片泰国有限公司 | The design method and lens set of progressive refractive power glasses lens |
| CN107632411A (en) * | 2016-07-19 | 2018-01-26 | 上海根植企业管理咨询有限公司 | A kind of half progressive lens and the glasses containing it |
-
2013
- 2013-03-15 CN CN 201320118869 patent/CN203250079U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107615138A (en) * | 2015-05-26 | 2018-01-19 | 豪雅镜片泰国有限公司 | The design method and lens set of progressive refractive power glasses lens |
| CN107615138B (en) * | 2015-05-26 | 2019-06-14 | 豪雅镜片泰国有限公司 | The design method and lens set of progressive refractive power glasses lens |
| US10401649B2 (en) | 2015-05-26 | 2019-09-03 | Hoya Lens Thailand Ltd. | Method of designing progressive refractive power lens, and lens set |
| CN107632411A (en) * | 2016-07-19 | 2018-01-26 | 上海根植企业管理咨询有限公司 | A kind of half progressive lens and the glasses containing it |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20180315 |
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| CF01 | Termination of patent right due to non-payment of annual fee |