CN103149701B - Progressive multi-focus lens - Google Patents
Progressive multi-focus lens Download PDFInfo
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- CN103149701B CN103149701B CN201310104979.2A CN201310104979A CN103149701B CN 103149701 B CN103149701 B CN 103149701B CN 201310104979 A CN201310104979 A CN 201310104979A CN 103149701 B CN103149701 B CN 103149701B
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- depending
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- focus lens
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Abstract
The invention relates to a progressive multi-focus lens which is provided with a lens surface with 400 bending of a surface bending structure, wherein the upper part on the surface of the lens serves as a distant vision region, the lower part on the surface of the lens serves as a near vision region, a transition region is arranged between the distant vision region and the near vision region, and two sides of the transition region are respectively provided with an astigmatism region; an optometry cross is positioned above the horizontal line of the geometric center of the lens by 4mm, a distant vision reference point of the lens is positioned above the horizontal line of the geometric center of the lens by 8mm, and a near vision reference point of the lens is positioned under the geometric center of the lens by 12mm; and the narrowest width of the transition region is 3-7mm, and the astigmatism luminosity of an astigmatism region is equal to a lower ADD (attention deficit disorder) number+/-0.15D. The progressive multi-focus lens provided by the invention is wide in a distant vision field, so that different crowds and different optometry requirements can be met, and wearers can have the wider distant vision field; the motion sickness symptom and the image jumping phenomenon of the wears can be basically eliminated; and the progressive multi-focus lens is applicable to the requirements of work, life and study of the different wears.
Description
Technical field
The present invention relates to the technical field of eye lens, in particular, the present invention relates to a kind of progressive multi-focus lens.
Background technology
Presbyopia is the main visual impairment of elderly population.That presbyopia wearer needs is far away, in, the vision correcting of the different distance such as near, therefore require different correction of refractive errors functions to be integrated on same a slice eyeglass, form the glasses of a plurality of focuses.And ophthalmic progressive additional lens can meet simultaneously depending on far away with look near demand, but also overcome people, use the defects such as the visual field when looking far field and near reading range conversion such as two light microscopics is discontinuous, video fracture, middle distance blurring of vision; Ophthalmic progressive additional lens is generally used in main western countries at present, also day by day extensive in the application of China big and medium-sized cities.
Ophthalmic progressive additional lens is by the zone of transition of the continuous progressive increase of focal power, naturally being connected of far field and near reading range surface face shape, is looked in realization, the focal power that realizes eyeglass changes continuously, making to draw near the visual field of different distance can blur-free imaging without fracture, since nineteen fifty-nine first generation Progressive addition lens Varilux lens is put on market; Second generation progressive lenses in 1972, Varilux II, is known as again " physiological progressive lenses " and introduces to the market, and succeed, and progressive lenses is also accepted by market more and more widely since then.1993 the 4th generation progressive lenses, comfort type progressive lenses comes into the market, the guiding theory of the 4th generation progressive design is to make wearer obtain the eyesight closer to normal physiological state.At the beginning of 2000, in the 5th progressive of generation, " panorama ultraphotic progressive lenses " is otherwise known as.The 5th generation progressive lenses started the brand new ideas of overall design, starting point is to make glasses wearer to obtain more perfect spatial vision and consciousness.
Ophthalmic progressive additional lens surface is divided into periphery spread area and available field of visual.Available field of visual comprises depending on far field, middle progressive district (also claiming passage) and near reading range.Generally speaking, depending on far field, be positioned at the top of glasses, for people's limit, in loosening under the state of looking squarely, correct and look ability far away, clear, the broad visual field is provided.Near reading range is positioned at the bottom of glasses, for closely correcting the ability of looking nearly under viewed status.Depending on a reference point in far field, be called and look far point, a reference point near reading range is called looks near point, depending near point and depending on the difference of the focal power between far point, is called and adds luminosity.Middle progressive district connects the zone line of looking far field and near reading range, to glasses wearer, provides in the mild transformation of looking focal power between far field and near reading range.
Wear ophthalmic progressive additional lens, although can obtain comparatively satisfied visual effect and the more satisfied visual effect used far away, for different crowds, may there is different picture thing distortion in other apparent time; Although can carry out personalized design according to wearer, the consequence of personalized design must be to cause versatility poor.
Summary of the invention
In order to solve the above-mentioned technical matters existing in prior art, the object of the present invention is to provide a kind of progressive multi-focus lens.Progressive multi-focus lens of the present invention has broad far away from the ken, can meet different crowd, difference is joined mirror demand, allows wearer have the wider territory, far field of looking; And astigmatism district and junction, visible area luminosity distributes gently, astigmatism district astigmatism luminosity steady change, has eliminated wearer's cinetosis symptom substantially.In addition, the luminosity transition in progressive district is more mild and stable, has eliminated wearer from seeing as far as seeing that picture when near jumps sense, and the comfortableness of wearing is improved greatly.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A progressive multi-focus lens, the Wei Shi far field, top of described lens surface, lens surface bottom is near reading range, depending on being zone of transition between far field and near reading range, the both sides of zone of transition are astigmatism district; Wherein, join mirror cross and be positioned at 4mm place on eyeglass geometric center horizontal line, described eyeglass depending on reference point far away, be positioned at 8mm place on eyeglass geometric center horizontal line, depending on nearly reference point, be positioned at the following 12mm of geometric center place; And the narrowest width of described zone of transition is 3-7mm, the astigmatic luminosity in astigmatism district adds light ADD numerical value ± 0.15D under being.
Wherein, depending on nearly reference point and depending on adding light between reference point far away, be+0.75D, depending on the visual width >=45mm in far field, the available width >=13mm of near reading range.
Wherein, depending on nearly reference point and depending on adding light between reference point far away, be+1.00D-+3.00D, depending on the visual width >=25mm in far field, the available width >=13mm of near reading range.
Wherein, described eyeglass has the lens surface of 400 curved face kinking structures.
Compared with prior art, the present invention has following beneficial effect: progressive multi-focus lens of the present invention has broad far away from the ken, can meet different crowd, difference is joined mirror demand, allows wearer have the wider territory, far field of looking; And astigmatism district and junction, visible area luminosity distributes gently, astigmatism district astigmatism luminosity steady change, has eliminated wearer's cinetosis symptom substantially.In addition, the luminosity transition in progressive district is more mild and stable, has eliminated wearer from seeing as far as seeing that picture when near jumps sense, and the comfortableness of wearing is improved greatly.
Accompanying drawing explanation
Fig. 1 is the subregion schematic diagram of progressive multi-focus lens.
The progressive multi-focus lens that Fig. 2 provides for embodiment 1 add luminosity mirror plane distribution plan.
The astigmatism mirror plane distribution plan of the progressive multi-focus lens that Fig. 3 provides for embodiment 1.
The progressive multi-focus lens that Fig. 4 provides for embodiment 2 add luminosity mirror plane distribution plan.
The astigmatism mirror plane distribution plan of the progressive multi-focus lens that Fig. 5 provides for embodiment 2.
Embodiment
Below in conjunction with specific embodiments and the drawings, technical scheme of the present invention is further elaborated, but embodiments of the present invention are not limited to this.
As shown in Figure 1, progressive multi-focus lens of the present invention, the Wei Shi far field, top 1 of described lens surface, lens surface bottom is near reading range 3, depending on being zone of transition 2 between far field 1 and near reading range 3, the both sides of zone of transition 2 are astigmatism district 4.
Eyeglass of the present invention can be made by any means manufacture easily and the material of producing eyeglass by any known being applicable to.The method of the disclosed design minute surface of US6302540A for example, and can pass through commercially available design software such as ZEMAX, VM2000 etc.The multifocal some surface of eyeglass of the present invention can be continuous, local continuous or complete discontinuous aspheric surface." discontinuous " refers to, the uncontinuity in describing one or more functions of morphology, or the uncontinuity in the surface slope at this place, surperficial arbitrfary point.If surface is continuous, each dioptric profile engages, thereby when wearing this eyeglass, can't see any straight line.If partial discontinuous, these regions central meridian is surfacewise continuous, but discontinuous in its periphery.
Designing lens curve of the present invention provides with minor function according to basis: Z=f (x, y); According to this function, can obtain minute surface O point 3D with interior correct mathematical coordinates directive system.We are defined as Oxyz-xOy indication mechanism by this coordinate directive system.The field of definition that wherein O is ordered is: Z=rx
2+ 2sxy+ty
2; R wherein, s, t is the derivative of progressive local curved surface, r=d
2z/dx
2, s=d
2z/dxdy; T=d
2z/dy
2.After designing minute surface curved surface, can produce eyeglass of the present invention by traditional method for manufacturing lens, such as machine work, grinding, die casting, die casting etc.Lens surface can also comprise suitable figure layer, such as antireflecting coating, photochromic coating, wear-resistant coating etc. in addition.
Embodiment 1
Prepare an eyeglass, join mirror cross and be positioned at 4mm place on eyeglass geometric center horizontal line, described eyeglass depending on reference point far away, be positioned at 8mm place on eyeglass geometric center horizontal line, depending on nearly reference point, be positioned at the following 12mm of geometric center place; And the narrowest width of described zone of transition is 7mm, depending on nearly reference point and depending on adding light between reference point far away, be+0.75D; Depending on far field, be zero diopter, add luminosity mirror plane and distribute as shown in Figure 2; The astigmatic luminosity in astigmatism district is no more than 0.75D, and astigmatism is received poor eyeglass and distributed as shown in Figure 3.And depending on the visual width >=45mm in far field, the available width >=13mm of near reading range.
Embodiment 2
Prepare an eyeglass, join mirror cross and be positioned at 4mm place on eyeglass geometric center horizontal line, described eyeglass depending on reference point far away, be positioned at 8mm place on eyeglass geometric center horizontal line, depending on nearly reference point, be positioned at the following 12mm of geometric center place; The narrowest width of described zone of transition is 5mm, depending on nearly reference point and depending on adding light between reference point far away, is+2.00D; Depending on far field, be zero diopter, add luminosity mirror plane and distribute as shown in Figure 4; The astigmatic luminosity in astigmatism district is no more than 2.00D, and astigmatism is received poor eyeglass and distributed as shown in Figure 5.And depending on the visual width >=25mm in far field, the available width >=13mm of near reading range.
Although embodiment part elaborates technical scheme of the present invention by embodiment, but those of ordinary skill in the art is to be understood that and can without departing from the scope of the present disclosure, can adopts to be equal to and replace or the enforcement of equivalent transformation form.Therefore, protection scope of the present invention is not limited to the specific embodiment of embodiment part, as long as no the embodiment that departs from invention essence, within being all interpreted as having dropped on the protection domain of requirement of the present invention.
Claims (4)
1. a progressive multi-focus lens, the Wei Shi far field, top of lens surface, lens surface bottom is near reading range, depending on being zone of transition between far field and near reading range, the both sides of zone of transition are astigmatism district; It is characterized in that: join mirror cross and be positioned at 4mm place on eyeglass geometric center horizontal line, described eyeglass depending on reference point far away, be positioned at 8mm place on eyeglass geometric center horizontal line, depending on nearly reference point, be positioned at the following 12mm of geometric center place; And the narrowest width of described zone of transition is 3-7mm, the astigmatic luminosity in astigmatism district adds light ADD numerical value ± 0.15D under being; The curved surface of described lens surface provides according to function: Z=f (x, y); According to this function, obtain minute surface O point 3D with interior correct mathematical coordinates directive system; The field of definition that wherein O is ordered is: Z=rx
2+ 2sxy+ty
2; R wherein, s, t is the derivative of progressive local curved surface, r=d
2z/dx
2, s=d
2z/dxdy; t=d
2z/dy
2.
2. progressive multi-focus lens according to claim 1, is characterized in that: depending on nearly reference point and depending on adding light between reference point far away for+0.75D, and depending on the visual width >=45mm in far field, the available width >=13mm of near reading range.
3. progressive multi-focus lens according to claim 1, is characterized in that: depending on nearly reference point and depending on adding light between reference point far away for+1.00D-+3.00D, and depending on the visual width >=25mm in far field, the available width >=13mm of near reading range.
4. progressive multi-focus lens according to claim 1, is characterized in that: described eyeglass has 400 curved face kinking structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104979.2A CN103149701B (en) | 2013-03-29 | 2013-03-29 | Progressive multi-focus lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104979.2A CN103149701B (en) | 2013-03-29 | 2013-03-29 | Progressive multi-focus lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103149701A CN103149701A (en) | 2013-06-12 |
| CN103149701B true CN103149701B (en) | 2014-08-13 |
Family
ID=48547875
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310104979.2A Expired - Fee Related CN103149701B (en) | 2013-03-29 | 2013-03-29 | Progressive multi-focus lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI572939B (en) * | 2015-11-16 | 2017-03-01 | Brighten Optix Corp | Delay myopia with lenses |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631031B (en) * | 2013-09-30 | 2015-03-25 | 丹阳佰易视光学眼镜有限公司 | Dynamic progressive multi-focal-point lens |
| CN107121790A (en) * | 2017-06-16 | 2017-09-01 | 沈华豹 | Progressive multi-focal point type eyeglass |
| CN110568626A (en) * | 2019-09-20 | 2019-12-13 | 丹阳市飞达眼镜有限公司 | Multi-focus progressive lens |
| CN113641006A (en) * | 2021-08-11 | 2021-11-12 | 江苏科技大学 | Multi-functional lens of subregion of adjustable eye distance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07294859A (en) * | 1994-04-25 | 1995-11-10 | Tokai Kogaku Kk | Progressive multi-focus lens |
| JPH08286156A (en) * | 1995-04-18 | 1996-11-01 | Hoya Corp | Progressive multifocal lens |
| CN1215843A (en) * | 1997-10-16 | 1999-05-05 | 埃塞罗国际公司 | Multifocal ophthalmic lens |
| CN102937750A (en) * | 2012-12-07 | 2013-02-20 | 苏州大学 | Method for designing progressive multi-focus lens |
| CN203149230U (en) * | 2013-03-29 | 2013-08-21 | 魏炳松 | Progressive multi-focal lens |
-
2013
- 2013-03-29 CN CN201310104979.2A patent/CN103149701B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07294859A (en) * | 1994-04-25 | 1995-11-10 | Tokai Kogaku Kk | Progressive multi-focus lens |
| JPH08286156A (en) * | 1995-04-18 | 1996-11-01 | Hoya Corp | Progressive multifocal lens |
| US5710615A (en) * | 1995-04-18 | 1998-01-20 | Hoya Corporation | Progressive power multifocal lens |
| CN1215843A (en) * | 1997-10-16 | 1999-05-05 | 埃塞罗国际公司 | Multifocal ophthalmic lens |
| CN102937750A (en) * | 2012-12-07 | 2013-02-20 | 苏州大学 | Method for designing progressive multi-focus lens |
| CN203149230U (en) * | 2013-03-29 | 2013-08-21 | 魏炳松 | Progressive multi-focal lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI572939B (en) * | 2015-11-16 | 2017-03-01 | Brighten Optix Corp | Delay myopia with lenses |
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| Publication number | Publication date |
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| CN103149701A (en) | 2013-06-12 |
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