CN107121790A - Progressive multi-focal point type eyeglass - Google Patents
Progressive multi-focal point type eyeglass Download PDFInfo
- Publication number
- CN107121790A CN107121790A CN201710457263.9A CN201710457263A CN107121790A CN 107121790 A CN107121790 A CN 107121790A CN 201710457263 A CN201710457263 A CN 201710457263A CN 107121790 A CN107121790 A CN 107121790A
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- CN
- China
- Prior art keywords
- progressive
- eyeglass
- focal point
- point type
- area
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
- G02C7/063—Shape of the progressive surface
- G02C7/066—Shape, location or size of the viewing zones
Abstract
The invention discloses progressive multi-focal point type eyeglass, lens surface top, which is provided with, regards far field, lens surface bottom is provided near reading range, depending on having progressive area between far field and near reading range, the both sides in progressive area are astigmatism area, progressive area uniformly successively decreases in continuous progressive mode from top to bottom, and near reading range is set to the eyeglass of different size according to dim light degree under difference.The present invention regard progressive multi-focal point type eyeglass as vision accommodation functional training eyeglass, by the way of lower dim light, targetedly human visual function is trained, and improve the matching for adjusting its function by way of expansion, so as to reach while the normal development of teenager's visual performance is ensured, the effect of pre- myopic-preventing occurrence and development is realized.
Description
Technical field
The present invention relates to eyeglass field, more particularly to a kind of progressive multi-focal point type eyeglass.
Background technology
In recent years, the glasses that progressive multi-focus lens are made generally have been used in each major country in west, at me
The application of the big and medium-sized cities of state is also increasingly extensive.Progressive multi-focus lens are that the number of degrees are different above and below one kind, and existing distance vision zone has again
The eyeglass of near vision zone, realizes natural sparse model from the distance vision zone of eyeglass near vision zone by the transition region of the progressive change of angular, makes
The visual field of different distance can be realized without fracture blur-free imaging in each distance of visual range, and that meets long sight simultaneously, near
Depending on and various visible sensation distances demand.
Although progressive multi-focus lens disclosure satisfy that the demand of various visible sensation distances, but typically just as correcting defects of vision
The presbyopic lens of ophthalmic len, especially the elderly is used, and the eyeglass for also having some to prevent as adolescent myopia is used,
Singly in fact, presbyopic is the problem of a kind of function of human body degeneration causes visual debility, compensation can be adjusted with convex lens,
But the teenager of adolescence is in, many regulatory functions of its body are at the period of gradual perfection, if simply
Adjust its eyesight by force using convex lens, then the development of its eye and the perfect of visual function can be impacted.So, though
The progressive multi-focus lens on presbyopic glasses so are used into pre- myopia prevention to be possible to obtain certain effect really, but it is actually this
Behavior simultaneously is unworthy advocating, and is not specially designed for tempering eye function, pre- myopia prevention in the prior art and ensures
The eyeglass of teenager's visual performance normal development.
The content of the invention
To solve the above problems, the invention provides a kind of progressive multi-focal point type eyeglass.
According to an aspect of the invention, there is provided progressive multi-focal point type eyeglass, lens surface top, which is provided with, regards far field, mirror
Piece surface lower portions are provided near reading range, and described regard has progressive area between far field and the near reading range, the both sides in the progressive area are
Astigmatism area, the progressive area uniformly successively decreases in continuous progressive mode from top to bottom, and the near reading range is set according to dim light degree under difference
It is set to the eyeglass of different size.Thus, it is possible to which improving function is trained pre- myopic-preventing occurrence and development.
The eyeglass is provided with two permanent marks being located in same horizontal line, the water where two permanent marks
There is an eyeglass geometric center on line centered on horizontal line, the center line, two permanent marks are relative to the mirror
Piece geometric center is symmetrical.Thus, it is possible to ensure that eyeglass is accurate in test is installed.
The length in the progressive area is 8mm-12mm, and width is more than 6mm.Thus, it is possible to realize the effect of comfortable wearing.
The preceding surface of the eyeglass is the continuous curved surface of multiple tracks and radius of curvature consecutive variations, and the radius of curvature on rear surface is protected
Hold constant.Thus, it is possible to realize the effect for improving wear comfort.
The mirror plate layers of different size are made in the near reading range in the way of lower dim light degree is a level jump per -0.25D, under
The scope of dim light degree is -0.50D to -2.75D.Thus, it is possible to which targetedly human visual function is trained and improved.
Brief description of the drawings
Fig. 1 is the subregion schematic diagram of the progressive multi-focal point type eyeglass of an embodiment of the present invention；
Fig. 2 schemes for the lens surface mark of progressive multi-focal point type eyeglass shown in Fig. 1；
Fig. 3 is dim light distribution map under the near reading range of progressive multi-focal point type eyeglass shown in Fig. 1.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Fig. 1 schematically shows the subregion feelings of the progressive multi-focal point type eyeglass according to one embodiment of the present invention
Condition.As shown in figure 1, the surface top of eyeglass 1, which is provided with, regards far field 2, lens surface bottom is provided near reading range 3, depending on far field 2 and near reading range
There is progressive area 4, the progressive both sides of area 4 are not belonging to regard the region of far field 2 and near reading range 3 as astigmatism area 5 between 3.
Fig. 2 shows the lens surface mark figure of the progressive multi-focal point type eyeglass in Fig. 1.As shown in Fig. 2 being set on eyeglass 1
There are two permanent marks 12 being located in same horizontal line, permanent marks are 12 mark to be scribed on lens mold so that eyeglass
The mark formed after pouring.There is eyeglass geometry on line 11 centered on horizontal line where two permanent marks 12, center line 1
Center 13, two permanent marks 12 are symmetrical relative to eyeglass geometric center 13.And be provided with regarding far field 2 and regard far point 21, depending near
Area 3, which is provided with, regards near point 31, from regarding far point 21, to being progressive area 4 regarding near point 31, progressive area 4 is from regarding far field 2 near reading range 3
Transient mode uniformly successively decreases in continuous progressive mode from top to bottom.Focal point line 1, eyeglass geometric center 13, regarding far point 21 with
And be virtual depending near point 31, do not have shown on eyeglass material object.
The center line 11 of two formation of permanent marks 12 can install and debug datum line as eyeglass, can be accordingly by eyeglass
Rationally set depending on area distributions such as far field 2, near reading range 3 and progressive areas 4 according to regulation, ensure that eyeglass is installed accurate
Property.
The focal power of eyeglass is the curvature of curved surface of eyeglass to show, curvature more lordotic is higher, if the degree of two curved surfaces
Number is close, then the cambered surface of curved surface will be close, and when two curved surfaces are close and during tangent face, curvature is closer to tangent
Face will be bigger, when curvature is identical, then two faces are completely tangent, and the tangent plane between two curved surfaces can form smooth area, and
Step just occurs in other parts in addition to tangent plane, and this step just forms the deformation of image.
Progressive multi-focal point type eyeglass is exactly that the curvature for gradually changing curved surface using multiple steps realizes that long sight and myopia are equivalent
The change of the different focal powers of fruit, step is more, it is possible to will require that the number of degrees changed divide more so that between adjacent curved surface
Radius of curvature change it is smaller, phase tangent plane is bigger, and smooth bent also bigger, wear comfort is higher.In order to ensure tangent plane
Region enough significantly, just must be by the Process Design of consecutive variations into the progressive process of a more thinner growths, progressive area 4
Length be accomplished by it is longer.
Further, human eye will become inwardly and simultaneously downward when seeing distant place in horizontal level, when seeing nearby, general human eye
The physiological phenomenon path length in 20mm or so, therefore progressive lenses are in the design process, in order to ensure to see remote and see near
More comfortably, it is necessary to design the length in progressive area 4 according to the physilogical characteristics, in the present invention, the length in progressive area 4 is 8mm-
12mm, if beyond the scope, it is no matter larger or smaller the problem of be likely to wear comfort occur.
Due to also needing to the presence in astigmatism area 5, the width in progressive area 4 can not be excessive, but is got in view of the width in progressive area 4
Greatly, wear comfort is also higher, and the pupil diameter that effective image is formed in human eye is general in 4mm or so, therefore in this hair
In bright, the width in progressive area 4 is at least also greater than 6mm, can both meet eye viewing, can also meet specifically for production technology
Ask.
Fig. 3 shows dim light schematic diagram under the near reading range of the progressive multi-focal point type eyeglass in Fig. 1.As shown in figure 3, near reading range
3 are set to the mirror plate layers of different size according to dim light degree under difference, wherein according to lower dim light degree per -0.25D between each mirror plate layers
The mode jumped for a level is distributed, and the scope of lower dim light degree is -0.50D to -2.75D.It follows that the number one of mirror plate layers
Have 10, its lower dim light degree be respectively -0.50D, -0.75D, -1.00D, -1.25D, -1.50D, -1.75D, -2.00D, -
2.25D、-2.50D、-2.75D.Being changed stepwise to rise of each mirror plate layers allows the imaging effect of near reading range 3 progressively to expand, and according to
The function of this regulation eyeglass 1 is targetedly instructed to the matching of people's eye visual so as to realize to human visual function
Practice and improve.
In addition, the Curvature varying in each region of eyeglass 1 is the company for multiple tracks radius of curvature consecutive variations by its preceding surface
What continuous curved surface was realized, and the radius of curvature on the rear surface of eyeglass 1 keeps constant.In this way, only carrying out curvature half on the front surface
The change in footpath, is convenient to the progress of the work such as the processing and adjustment of eyeglass 1.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.
Claims (8)
1. progressive multi-focal point type eyeglass, it is characterised in that：Eyeglass (1) surface top, which is provided with, regards far field (2), and lens surface bottom is set
There is near reading range (3), described regard between far field (2) and the near reading range (3) has progressive area (4), the both sides of the progressive area (4)
For astigmatism area (5), the progressive area (4) is uniformly successively decreased in continuous progressive mode from top to bottom, and the near reading range (3) is according to difference
Lower dim light degree is set to the eyeglass of different size.
2. progressive multi-focal point type eyeglass according to claim 1, it is characterised in that：The eyeglass (1) is provided with two positions
In the permanent marks (12) in same horizontal line, line (11) centered on the horizontal line where two permanent marks (12).
3. progressive multi-focal point type eyeglass according to claim 2, it is characterised in that：There is mirror on the center line (11)
Piece geometric center (13), two permanent marks (12) are symmetrical relative to the eyeglass geometric center (13).
4. progressive multi-focal point type eyeglass according to claim 1, it is characterised in that：The length of the progressive area (4) is
8mm-12mm。
5. progressive multi-focal point type eyeglass according to claim 1, it is characterised in that：The width of the progressive area (4) is more than
6mm。
6. progressive multi-focal point type eyeglass according to claim 1, it is characterised in that：The preceding surface of the eyeglass (1) is many
The continuous curved surface in road and radius of curvature consecutive variations, the radius of curvature on rear surface keep constant.
7. the progressive multi-focal point type eyeglass according to one of claim 1-6, it is characterised in that：The near reading range (3)
The mirror plate layers of different size are made in the way of lower dim light is a level jump per -0.25D.
8. progressive multi-focal point type eyeglass according to claim 7, it is characterised in that：Under subtract photometric range for -0.50D to -
2.75D。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457263.9A CN107121790A (en) | 2017-06-16 | 2017-06-16 | Progressive multi-focal point type eyeglass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457263.9A CN107121790A (en) | 2017-06-16 | 2017-06-16 | Progressive multi-focal point type eyeglass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107121790A true CN107121790A (en) | 2017-09-01 |
Family
ID=59719006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710457263.9A Pending CN107121790A (en) | 2017-06-16 | 2017-06-16 | Progressive multi-focal point type eyeglass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107121790A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2674566C1 (en) * | 2017-10-13 | 2018-12-11 | Юрий Евгеньевич Маслов | Training lens |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3853849B2 (en) * | 1993-12-09 | 2006-12-06 | セイコーエプソン株式会社 | Eyeglass lenses |
| CN202149983U (en) * | 2011-05-17 | 2012-02-22 | 孟宪圣 | Progressive multi-focus glasses |
| CN202339452U (en) * | 2011-10-28 | 2012-07-18 | 上海市宝山区罗店中心校 | Presbyopic glasses capable of seeing long distance and short distance |
| JP5140768B1 (en) * | 2012-02-20 | 2013-02-13 | 株式会社山一屋 | Progressive multifocal lens, progressive multifocal lens design method, progressive multifocal lens processing method |
| CN103149701A (en) * | 2013-03-29 | 2013-06-12 | 魏炳松 | Progressive multi-focus lens |
-
2017
- 2017-06-16 CN CN201710457263.9A patent/CN107121790A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3853849B2 (en) * | 1993-12-09 | 2006-12-06 | セイコーエプソン株式会社 | Eyeglass lenses |
| CN202149983U (en) * | 2011-05-17 | 2012-02-22 | 孟宪圣 | Progressive multi-focus glasses |
| CN202339452U (en) * | 2011-10-28 | 2012-07-18 | 上海市宝山区罗店中心校 | Presbyopic glasses capable of seeing long distance and short distance |
| JP5140768B1 (en) * | 2012-02-20 | 2013-02-13 | 株式会社山一屋 | Progressive multifocal lens, progressive multifocal lens design method, progressive multifocal lens processing method |
| CN103149701A (en) * | 2013-03-29 | 2013-06-12 | 魏炳松 | Progressive multi-focus lens |
Non-Patent Citations (1)
| Title |
|---|
| 杨云东 等: "《实用视光学基础》", 30 April 2011 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2674566C1 (en) * | 2017-10-13 | 2018-12-11 | Юрий Евгеньевич Маслов | Training lens |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170901 |
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| RJ01 | Rejection of invention patent application after publication |