CN104678572A - Glass lens - Google Patents
Glass lens Download PDFInfo
- Publication number
- CN104678572A CN104678572A CN201310628174.8A CN201310628174A CN104678572A CN 104678572 A CN104678572 A CN 104678572A CN 201310628174 A CN201310628174 A CN 201310628174A CN 104678572 A CN104678572 A CN 104678572A
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- region
- dioptric
- dioptric region
- refractive power
- lens
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- 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
-
- 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
-
- 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
- G02C7/022—Ophthalmic lenses having special refractive features achieved by special materials or material structures
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/24—Myopia progression prevention
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
The invention provides a glass lens. The glass lens can show the function of inhibiting the development of ametropia of the eyes and simultaneously can ensure full visibility and good wearing feel. The glass lens comprises first refraction areas and second refraction areas, wherein each first refraction area has first refraction force based on a prescription for correcting the ametropia of the eyes; each second refraction area has refraction force different from the first refraction force and has the function of focusing pictures on the positions except the retina of the eyes to inhibit the development of the ametropia of the eyes, wherein near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.
Description
Technical field
The present invention relates to a kind of lens, this lens has the function of the ametropic development suppressing myopia and long sight in eye.
Background technology
As the eyeglass of function with the ametropic development suppressing myopia and long sight in eye, such as, known patent document 1(Japanese Patent No. 4891249 publication) in the eyeglass of description.
The eyeglass described in patent documentation 1 is concentric Fresnel multifocal lens (concentric Fresnel multifocus lens).Namely, this eyeglass is following eyeglass: in eyeglass, configure multiple dioptric region (refraction area) with one heart, wherein, at least one the dioptric region as the first dioptric region in these dioptric regions has the first refractive power of the ametropia prescription based on correction ocular.And the dioptric region except the first dioptric region has at least one refractive power different from the first refractive power respectively.
Dioptric region except the first dioptric region can be the second dioptric region only with second refractive power different from the first refractive power, or can be multiple dioptric regions with multiple refractive power different from each other, picture there is the 3rd dioptric region of the 3rd refractive power and there is the 4th dioptric region of the 4th refractive power except the second dioptric region ...
And in above-mentioned eyeglass, the region with the first refractive power has the function of image focu on the retina of eyes.On the other hand, such as, when forming the eyeglass of the development suppressing myopia, the material of image focu to the function of the point in the retina front at eyes is formed by having by the dioptric region except the dioptric region with the first refractive power.Therefore, if patient uses the eyeglass suppressing near-sighted to watch object, then form the picture of object on the retina, on the point in retina front, form picture simultaneously.Therefore, it is possible to while the visual picture distinguished by the object of the first refractive power formation, obtained the effect of the development suppressing myopia by the picture formed in retina front by the refractive power except the first refractive power.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent No. 4891249 publication
Summary of the invention
the problem that invention will solve
By way of parenthesis, above-mentioned conventional lenses is so-called concentric Fresnel multifocal lens.When being applied to the situation of the eyeglass as contact lens along with eyes together movement, this concentric multi-focal point eyeglass is almost no problem, and the relative position relation between eyes and eyeglass does not almost change.
But, when concentric Fresnel multifocal lens is applied to lens, if be no problem by watching object through the sight line of center of lens.But, when sight line passes the position away from center of lens, formed the picture of an object respectively by the mode of watching along different directions with the picture making the picture that formed by the first dioptric region and formed by the second dioptric region, cause watching dual object, be therefore difficult to use this eyeglass as lens.
The object of this invention is to provide a kind of lens, this lens can show the function of ametropic development suppressing eyes, guarantees visually and good fully to wear sense simultaneously.
for the scheme of dealing with problems
The mode solved the problem is as follows.
(1) lens, it comprises:
First dioptric region, it has the first refractive power of the ametropia prescription based on correction ocular; With
Second dioptric region, it has the refractive power different from described first refractive power, and have by image focu on the position except the retina of eyes to suppress the function of the ametropic development of eyes,
Wherein, near the central part of eyeglass, described second dioptric region is formed territory, multiple island-shaped area independent of each other, and
Described first dioptric region is formed the region except the region except being formed as described second dioptric region.
(2) according to the lens of (1), wherein, described lens is the lens of the function with the development suppressing myopia, and described second dioptric region has the refractive power obtained by increasing positive refractive power to described first refractive power.
(3) according to the lens of (1), wherein, described lens is the lens of the function with the development suppressing myopia, and described second dioptric region has the refractive power obtained by increasing negative refractive power to described first refractive power.
(4) according to the lens any one of (1) to (3), wherein, respectively independently the area in the described second dioptric region of island shape is 0.50mm
2to 3.14mm
2.
(5) according to the lens any one of (1) to (4), wherein, described second dioptric region is formed on the border circular areas with the radius of 20mm using the optical centre of described lens as center.
(6) according to the lens any one of (1) to (5), wherein, described second dioptric region is not formed at the border circular areas with the radius of 2.5mm to 10.0mm using the optical centre of described lens as center.
(7) according to the lens any one of (1) to (6), wherein, in the region be mixed to form by described second dioptric region and described first dioptric region, the total area in described second dioptric region is 20% to 60% relative to the ratio of the total area in described second dioptric region and described first dioptric region.
(8) according to the lens any one of (1) to (3), wherein, described second dioptric region is formed toroidal.
(9) according to the lens of (4), wherein, the diameter of a circle of each toroidal is 0.8mm to 2.0mm.
(10) according to the lens any one of (1) to (9), wherein, by making the surface configuration in described second dioptric region the make refractive power in the refractive power in described second dioptric region and described first dioptric region not identical with the surface configuration in described first dioptric region not identical.
(11) according to the lens of (10), wherein, the surface configuration in described second dioptric region is formed surface configuration relative to described first dioptric region towards the convex form of object side or concave shape.
(12) according to the lens any one of (1) to (9), wherein, by making described second dioptric region be made up of the material different from the material in described first dioptric region, described second dioptric region is made to have the refractive power different from the refractive power in described first dioptric region.
the effect of invention
In such a configuration, the first dioptric region has the function of image focu on the retina of eyes generally.But such as when forming the eyeglass of the development suppressing myopia, the material of image focu in the function of the point in the retina front of eyes is made by having by the second dioptric region.Therefore, when patient uses the eyeglass of the development suppressing myopia to watch object, form the picture of object on the retina, form picture in retina front simultaneously.Namely, this eyeglass has following effect: while the visual picture distinguished by the object of the first refractive power formation, suppressed the development of myopia by the picture obtained in retina front by the refractive power except the first refractive power.Situation for long sight can be described as same except following content: when long sight, by the second dioptric region by image focu on rear side of the retina of eyes.
Herein, near the central part of eyeglass, the second dioptric region is formed as multiple separate territory, island-shaped area, and wherein, the first dioptric region is formed as the region except the region except being formed the second dioptric region.Namely,
A. near central part, form the second dioptric region,
B. the second dioptric region is formed as territory, multiple independently island-shaped area,
C. the region except being formed the region in the second dioptric region is the first dioptric region,
Obtain following effect thus.
Under the state of d. watching forward, sight line watches object through the substantially central portion of eyeglass, therefore watches object by the light beam through the multiple second dioptric regions be distributed in the mode be included in the first dioptric region and the light beam through the first dioptric region.As a result, this eyeglass has following effect: while the visual picture distinguished due to the object of the first refractive power formation, suppressed the development of myopia by the picture formed in retina front due to the second refractive power.
E., when eyes move, sight line departs from central part and passes periphery.But periphery is the region (having the region of the first refractive power) of the refractive power had based on prescription, therefore, it is possible to very well pick out object, even if eyes move, wearer does not almost have sense of discomfort yet.Therefore, it is possible to show the function of ametropic development suppressing eyes, guarantee visually and good fully to wear sense simultaneously.
Accompanying drawing explanation
Fig. 1 is the planimetric map of lens according to the embodiment of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the sectional view of the lens shown in Fig. 1.
Fig. 4 is the enlarged drawing of the part A of Fig. 3.
Fig. 5 is the key diagram of the beam trajectory of lens according to the embodiment of the present invention, and is the figure of the track of the light beam schematically shown through the first dioptric region.
Fig. 6 is the key diagram of the beam trajectory of lens according to the embodiment of the present invention, and is the figure of the track of the light beam schematically shown through the second dioptric region.
Fig. 7 is the key diagram of the beam trajectory of lens according to the embodiment of the present invention, and is the figure of the track of the light beam schematically shown through the first dioptric region and the second dioptric region.
Fig. 8 is the sectional view of the lens according to other embodiments of the present invention.
Fig. 9 is the partial enlarged drawing of the part B of Fig. 8.
Figure 10 is the planimetric map of the lens according to another embodiment of the present invention.
Embodiment
Fig. 1 is the planimetric map of lens according to the embodiment of the present invention, Fig. 2 is the partial enlarged drawing of Fig. 1, Fig. 3 is the sectional view of the lens shown in Fig. 1, Fig. 4 is the enlarged drawing of the part A of Fig. 3, Fig. 5 is the key diagram of the beam trajectory of lens according to the embodiment of the present invention, and be the figure of the track of the light beam schematically shown through the first dioptric region, Fig. 6 is the key diagram of the beam trajectory of lens according to the embodiment of the present invention, and be the figure of the track of the light beam schematically shown through the second dioptric region, Fig. 7 is the key diagram of the beam trajectory of lens according to the embodiment of the present invention, and be the figure of the track of the light beam schematically shown through the first dioptric region and the second dioptric region.Below with reference to accompanying drawing, vision correcting lens is according to the embodiment of the present invention described.
As shown in Figures 1 to 4, the lens 10 of present embodiment is the eyeglass of the effect with the development suppressing myopia myopia correction while, this lens 10 is the falcate concavees lens with object side surface 11 and eye side surface 12, wherein object side surface 11 is formed as towards the convex surface of object side, and eye side surface 12 is formed as the concave surface with the curvature larger than the curvature of object side surface 11.This lens 10 has the first dioptric region 1 and the second dioptric region 2, wherein the first dioptric region 1 has the first refractive power of the prescription based on myopia correction, and the second dioptric region 2 is formed as multiple separate territory, island-shaped area near the central part of eyeglass.
As shown in the sectional view of Fig. 3 and Fig. 4, the object side surface in each second dioptric region 2 is formed towards the convex spherical shape of object side, and this object side surface has the curvature larger than the curvature of the object side surface in the first dioptric region 1.Therefore, the refractive power in the second dioptric region 2 2.00D to 5.00D larger than the refractive power in the first dioptric region.Correspondingly, as shown in Figure 5, in the first dioptric region, image focu is on the retina of eyes, and on the other hand, as shown in Figure 6, in the second dioptric region 2, image focu is on the point in retina front.Fig. 7 illustrates the beam trajectory in the first dioptric region and the second dioptric both areas.
The area being formed as each surface in the second dioptric region 2 in territory, multiple island-shaped area is approximately 0.50mm
2to 3.14mm
2, and all there is the toroidal that diameter d is about 0.8mm to 2.0mm.Configure the second dioptric region 2 of multiple islands shape roughly equably no better than the mode of the value of radius d/2 with the distance be separated from each other at the immediate vicinity of eyeglass.
Second dioptric region 2 of multiple islands shape is formed in the mode had in the border circular areas of radius R (below 20mm) centered by optical centre O being included in eyeglass, and such as configures to be connected on the hexagonal mode had in the circle of radius R in being formed.Herein, the second dioptric region 2 is not configured at the border circular areas with the radius of 2.5mm to 10.0mm using the optical centre O of lens as center.And in the region be mixed to form by the second dioptric region and the first dioptric region, the total area in the second dioptric region is 20% to 60% relative to the ratio of the total area in the second dioptric region and the first dioptric region.Therefore, it is possible to while the function guaranteeing the development suppressing myopia, keep fully visual and obtain good wearing sense.
Fig. 8 is the sectional view of the lens according to other embodiments of the present invention, and Fig. 9 is the enlarged drawing of the part B of Fig. 8.In the lens shown in these figure, the part in the second dioptric region 2 is made up of the material different from the material forming the first dioptric region 1.Namely, as shown in Figure 9, the high refractive index material portion 21 with large refractive index is arranged at the second dioptric region 2 with the shape of the through-thickness roughly plano-convex inside from the surface in the second dioptric region 2.Same with this structure, the function identical with the function in the second dioptric region of above-mentioned embodiment can be obtained.In this case, such as, the plastic material of CR39 material can be used as the material in formation first dioptric region 1, the Thermocurable allyl resin (allyl resin) that this CR39 material is 1.5 by refractive index is made; Such as, the plastic material that the Thermocurable polythiourethane resin (polythiourethane resin) that can to use by refractive index be 1.67 is made is as high dioptric substances.
Figure 10 is the planimetric map of the lens according to another embodiment of the present invention.In the eye plate of the embodiment shown in Fig. 1, not configuring the second dioptric region of island shape in the border circular areas with the radius of 2.5mm to 10.0mm at center using the optical centre O of lens, but in the present embodiment, as shown in Figure 10, in the border circular areas with the radius of 2.5mm to 10.0mm using optical centre O as center, also configure the second dioptric region of island shape.Other structure has the structure identical with the embodiment shown in Fig. 1, and therefore description is omitted.This embodiment is adopted also can fully to obtain effect of the present invention.
Above-mentioned embodiment illustrates following example: wherein, and the dioptric region except the first dioptric region is formed the second dioptric region only with second refractive power different from the first refractive power.But these dioptric regions can be multiple dioptric regions respectively with multiple refractive power different from each other, as there is the 3rd dioptric region of the 3rd refractive power and there is the 4th dioptric region of the 4th refractive power ...In this case, these multiple dioptric regions are suitably dispersed in the region configuring above-mentioned second dioptric region.
description of reference numerals
1 first dioptric region
2 second dioptric regions
10 lenses
11 object side surface
12 side surfaces
21 high refractive index material portions
Claims (12)
1. a lens, it comprises:
First dioptric region, it has the first refractive power of the ametropia prescription based on correction ocular; With
Second dioptric region, it has the refractive power different from described first refractive power, and have by image focu on the position except the retina of eyes to suppress the function of the ametropic development of eyes,
Wherein, near the central part of eyeglass, described second dioptric region is formed territory, multiple island-shaped area independent of each other, and
Described first dioptric region is formed the region except the region except being formed as described second dioptric region.
2. lens according to claim 1, is characterized in that, described lens is the lens of the function with the development suppressing myopia, and described second dioptric region has the refractive power obtained by increasing positive refractive power to described first refractive power.
3. lens according to claim 1, is characterized in that, described lens is the lens of the function with the development suppressing myopia, and described second dioptric region has the refractive power obtained by increasing negative refractive power to described first refractive power.
4. lens according to any one of claim 1 to 3, is characterized in that, respectively independently the area in the described second dioptric region of island shape is 0.50mm
2to 3.14mm
2.
5. lens according to any one of claim 1 to 4, is characterized in that, described second dioptric region is formed on the border circular areas with the radius of 20mm using the optical centre of described lens as center.
6. lens according to any one of claim 1 to 5, is characterized in that, described second dioptric region is not formed at the border circular areas with the radius of 2.5mm to 10.0mm using the optical centre of described lens as center.
7. lens according to any one of claim 1 to 6, it is characterized in that, in the region be mixed to form by described second dioptric region and described first dioptric region, the total area in described second dioptric region is 20% to 60% relative to the ratio of the total area in described second dioptric region and described first dioptric region.
8. lens according to any one of claim 1 to 3, is characterized in that, described second dioptric region is formed toroidal.
9. lens according to claim 4, is characterized in that, the diameter of a circle of each toroidal is 0.8mm to 2.0mm.
10. lens according to any one of claim 1 to 9, it is characterized in that, by making the surface configuration in described second dioptric region the make refractive power in the refractive power in described second dioptric region and described first dioptric region not identical with the surface configuration in described first dioptric region not identical.
11. lenses according to claim 10, is characterized in that, the surface configuration in described second dioptric region is formed surface configuration relative to described first dioptric region towards the convex form of object side or concave shape.
12. lenses according to any one of claim 1 to 9, it is characterized in that, by making described second dioptric region be made up of the material different from the material in described first dioptric region, described second dioptric region is made to have the refractive power different from the refractive power in described first dioptric region.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628174.8A CN104678572B (en) | 2013-11-29 | 2013-11-29 | Ophthalmic len |
| HK15111496.9A HK1210838A1 (en) | 2013-11-29 | 2015-11-20 | Spectacle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628174.8A CN104678572B (en) | 2013-11-29 | 2013-11-29 | Ophthalmic len |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104678572A true CN104678572A (en) | 2015-06-03 |
| CN104678572B CN104678572B (en) | 2018-04-27 |
Family
ID=53313866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310628174.8A Active CN104678572B (en) | 2013-11-29 | 2013-11-29 | Ophthalmic len |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104678572B (en) |
| HK (1) | HK1210838A1 (en) |
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| CN104678572B (en) | 2018-04-27 |
| HK1210838A1 (en) | 2016-05-06 |
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