CN203149230U - Progressive multi-focal lens - Google Patents
Progressive multi-focal lens Download PDFInfo
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- CN203149230U CN203149230U CN 201320148843 CN201320148843U CN203149230U CN 203149230 U CN203149230 U CN 203149230U CN 201320148843 CN201320148843 CN 201320148843 CN 201320148843 U CN201320148843 U CN 201320148843U CN 203149230 U CN203149230 U CN 203149230U
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- lens
- reference point
- progressive multi
- look
- progressive
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Abstract
The utility model relates to a progressive multi-focal lens. The progressive multi-focal lens is provided with a lens surface of a surface bend structure with 400 turns, wherein the upper part of the lens surface is a distant vision region while the lower part of the lens surface is a near vision region; a transition region is formed between the distant vision region and the near vision region; astigmatism regions are formed on two sides of the transition region; an optometry cross is positioned at a place 4mm above the horizontal line of the geometric center of the lens; a distant vision reference point of the lens is positioned at a place 8mm above the horizontal line of the geometric center of the lens; a near vision reference point of the lens is positioned at a place 12mm under the geometric center of the lens; the narrowest width of the transition region is 3-7mm; and the astigmatism luminosity of the astigmatism regions is an ADD value plus or minus 0.15D. The progressive multi-focal lens has a board distant vision field so that different spectacle demands of different crowds can be satisfied and a wearer can own boarder distant vision regions; and meanwhile, motion sickness and skip images of the wearer are basically eliminated. The progressive multi-focal lens can be suitable for working, living and learning demands of different wearers.
Description
Technical field
The utility model relates to the technical field of eye lens, and in particular, the utility model relates to a kind of progressive multi-focus lens.
Background technology
Presbyopia is the main visual impairment of elderly population.That the presbyopia wearer needs is far away, in, the vision correcting of different distance such as near, therefore require different correction of refractive errors functions is integrated into on a slice eyeglass, form the glasses of a plurality of focuses.And ophthalmic progressive additional lens can satisfy simultaneously look far away with look near demand, use defectives such as the visual field when looking the conversion of far field and near reading range such as two light microscopics is discontinuous, video fracture, middle distance blurring of vision but also overcome people; Ophthalmic progressive additional lens is generally used in main western countries at present, and is 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, being connected naturally of far field and near reading range surface face shape, looked in realization, the focal power that realizes eyeglass changes continuously, make the different distance that draws near visual field non-cracking and can blur-free imaging, since the progressive mirror Varilux of nineteen fifty-nine first generation lens is put on market; Second generation progressive lenses in 1972, namely Varilux II is known as " physiological progressive lenses " again and introduces to the market, and succeeds, and progressive lenses is also accepted by market more and more widely since then.1993 the 4th generation progressive lenses, the comfort type progressive lenses comes into the market, the guiding theory of the 4th generation progressive design is to make the wearer obtain more eyesight close to the normal physiological state.At the beginning of 2000, in progressive of the 5th 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 the glasses wearer to obtain more perfect spatial vision and consciousness.
The ophthalmic progressive additional lens surface is divided into peripheral spread area and effective vision area.Effective vision area comprises looks far field, middle progressive district (also claiming passage) and near reading range.Generally speaking, look the top that the far field is positioned at glasses, be in to loosen to correct under the state of looking squarely for human eye and look ability far away, clear, the broad visual field is provided.Near reading range is positioned at the bottom of glasses, is used for closely correcting the ability of looking nearly under the viewed status.Look a reference point in the far field and be called and look far point, a reference point in the near reading range is called looks near point, and the difference of looking near point and looking the focal power between the far point is called and adds luminosity.Middle progressive district connects the zone line of looking far field and near reading range, is provided at the mild transformation of looking focal power between far field and the near reading range to the glasses wearer.
Wear ophthalmic progressive additional lens, though visual effect and the satisfied visual effect used far away that can obtain comparatively to be satisfied with, for different crowds, different picture thing distortion may appear in other apparent time; Though can carry out personalized design according to the wearer, the consequence of personalized design must be to cause versatility poor.
The utility model content
In order to solve the above-mentioned technical matters that exists in the prior art, the purpose of this utility model is to provide a kind of progressive multi-focus lens.Progressive multi-focus lens of the present utility model has the broad ken of using far away, can satisfy different crowd, difference is joined the mirror demand, allows the wearer have the wideer territory, far field of looking; And astigmatism district and visible area junction luminosity distributes gently, and astigmatism district astigmatism luminosity steady change has been eliminated wearer's cinetosis symptom substantially.In addition, the luminosity transition in progressive district is mild more and stable, has eliminated the wearer from seeing as far as seeing that the picture when near jumps sense, and comfort of wearing is improved greatly.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of progressive multi-focus lens, the top of described lens surface is for looking the far field, and the lens surface bottom is near reading range, looks to be zone of transition between far field and the near reading range, and the both sides of zone of transition are the astigmatism district; Wherein, join the mirror cross and be positioned at 4mm place on the eyeglass geometric center horizontal line, the reference point far away of looking of described eyeglass is positioned at 8mm place on the eyeglass geometric center horizontal line, looks nearly reference point and is positioned at the following 12mm of geometric center place; And the narrowest width of described zone of transition is 3-7mm, and the astigmatic luminosity in astigmatism district adds light ADD numerical value ± 0.15D under being.
Wherein, look nearly reference point and look and add light between the reference point far away and be+0.75D, look visual width 〉=the 45mm in far field, the available width 〉=13mm of near reading range.
Wherein, look nearly reference point and look and add light between the reference point far away and be+1.00D-+3.00D, look visual width 〉=the 25mm in far field, the available width 〉=13mm of near reading range.
Wherein, described eyeglass has the lens surface of the 400 face kinking structures of bending.
Compared with prior art, the utlity model has following beneficial effect: progressive multi-focus lens of the present utility model has the broad ken of using far away, can satisfy different crowd, difference is joined the mirror demand, allows the wearer have the wideer territory, far field of looking; And astigmatism district and visible area junction luminosity distributes gently, and astigmatism district astigmatism luminosity steady change has been eliminated wearer's cinetosis symptom substantially.In addition, the luminosity transition in progressive district is mild more and stable, has eliminated the wearer from seeing as far as seeing that the picture when near jumps sense, and comfort of wearing is improved greatly.
Description of drawings
Fig. 1 is the subregion synoptic 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 the technical solution of the utility model is further elaborated, but embodiment of the present utility model is not limited thereto.
As shown in Figure 1, progressive multi-focus lens of the present utility model, the top of described lens surface is for looking far field 1, and the lens surface bottom is near reading range 3, looks to be zone of transition 2 between far field 1 and the near reading range 3, and the both sides of zone of transition 2 are astigmatism district 4.
Eyeglass of the present utility model can be made by any means manufacturing easily and by the known arbitrarily material of producing eyeglass that is applicable to.The method of the disclosed design minute surface of US6302540A for example, and can be by commercially available design software for example ZEMAX, VM2000 etc.Many focuses surface of eyeglass of the present utility model can be continuous, local continuous or complete discontinuous aspheric surface." discontinuous " refers to, the uncontinuity in describing one or more functions of morphology, the perhaps uncontinuity in the surface slope at this surperficial place, arbitrfary point.If the surface is continuous, then each dioptric profile engages, thereby can't see any straight line when wearing this eyeglass.If partial discontinuous, these zones central meridian surfacewise is continuous, but discontinuous in its periphery.
Designing lens curve of the present utility model provides with minor function according to basis: and Z=f (x, y); According to this function, can obtain minute surface O point 3D with interior correct mathematics coordinate directive system.We are defined as the Oxyz-xOy indication mechanism with this coordinate directive system.Wherein the O field of definition of ordering is: Z=rx
2+ 2sxy+ty
2R wherein, s, t are the derivative of progressive local curved surface, r=d
2Z/dx
2, s=d
2Z/dxdy; T=d
2Z/dy
2Can produce eyeglass described in the utility model by traditional method for manufacturing lens, for example machine work, grinding, die casting, die casting etc. after designing the minute surface curved surface.Lens surface can also comprise suitable figure layer, for example antireflecting coating, photochromic coating, wear-resistant coating etc. in addition.
Prepare an eyeglass, join the mirror cross and be positioned at 4mm place on the eyeglass geometric center horizontal line, the reference point far away of looking of described eyeglass is positioned at 8mm place on the eyeglass geometric center horizontal line, looks nearly reference point and is positioned at the following 12mm of geometric center place; And the narrowest width of described zone of transition is 7mm, looks nearly reference point and look to add light between the reference point far away and be+0.75D; Looking the far field is zero diopter, adds the luminosity mirror plane and distributes as shown in Figure 2; The astigmatic luminosity in astigmatism district is no more than 0.75D, and astigmatism is received the difference eyeglass and distributed as shown in Figure 3.And look visual width 〉=the 45mm in far field, the available width 〉=13mm of near reading range.
Prepare an eyeglass, join the mirror cross and be positioned at 4mm place on the eyeglass geometric center horizontal line, the reference point far away of looking of described eyeglass is positioned at 8mm place on the eyeglass geometric center horizontal line, looks nearly reference point and is positioned at the following 12mm of geometric center place; The narrowest width of described zone of transition is 5mm, looks nearly reference point and look to add light between the reference point far away and be+2.00D; Looking the far field is zero diopter, adds the luminosity mirror plane and distributes as shown in Figure 4; The astigmatic luminosity in astigmatism district is no more than 2.00D, and astigmatism is received the difference eyeglass and distributed as shown in Figure 5.And look visual width 〉=the 25mm in far field, the available width 〉=13mm of near reading range.
Though the embodiment part elaborates the technical solution of the utility model by embodiment, but those of ordinary skill in the art is to be understood that and can breaking away from the utility model scope of disclosure, can adopt to be equal to and replace or the enforcement of equivalent transformation form.Therefore, protection domain of the present utility model is not limited to the specific embodiment of embodiment part, and the embodiment of short of disengaging utility model essence all has been interpreted as dropping within the protection domain of the utility model requirement.
Claims (5)
1. progressive multi-focus lens, the top of lens surface is for looking the far field, and the lens surface bottom is near reading range, looks to be zone of transition between far field and the near reading range, and the both sides of zone of transition are the astigmatism district; It is characterized in that: join the mirror cross and be positioned at 4mm place on the eyeglass geometric center horizontal line, the reference point far away of looking of described eyeglass is positioned at 8mm place on the eyeglass geometric center horizontal line, looks nearly reference point and is positioned at the following 12mm of geometric center place; And the narrowest width of described zone of transition is 3-7mm, and the astigmatic luminosity in astigmatism district adds light ADD numerical value ± 0.15D under being.
2. progressive multi-focus lens according to claim 1 is characterized in that: look nearly reference point and look and add light between the reference point far away and be+0.75D, look visual width 〉=the 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: look nearly reference point and look and add light between the reference point far away and be+1.00D-+3.00D, look visual width 〉=the 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.
5. according to each described progressive multi-focus lens of claim 1-4, it is characterized in that: (x y) provides the curved surface of described lens surface according to function: Z=f; Obtain minute surface O point 3D with interior correct mathematics coordinate directive system according to this function; Wherein the O field of definition of ordering is: Z=rx
2+ 2sxy+ty
2R wherein, s, t are the derivative of progressive local curved surface, r=d
2Z/dx
2, s=d
2Z/dxdy; T=d
2Z/dy
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320148843 CN203149230U (en) | 2013-03-29 | 2013-03-29 | Progressive multi-focal lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320148843 CN203149230U (en) | 2013-03-29 | 2013-03-29 | Progressive multi-focal lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203149230U true CN203149230U (en) | 2013-08-21 |
Family
ID=48976745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320148843 Withdrawn - After Issue CN203149230U (en) | 2013-03-29 | 2013-03-29 | Progressive multi-focal lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203149230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149701A (en) * | 2013-03-29 | 2013-06-12 | 魏炳松 | Progressive multi-focus lens |
-
2013
- 2013-03-29 CN CN 201320148843 patent/CN203149230U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149701A (en) * | 2013-03-29 | 2013-06-12 | 魏炳松 | Progressive multi-focus lens |
| CN103149701B (en) * | 2013-03-29 | 2014-08-13 | 魏炳松 | Progressive multi-focus lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20140813 |
|
| RGAV | Abandon patent right to avoid regrant |