阅读说明：本技术 近视度数预防加深的眼镜片 (Spectacle lens for preventing myopia degree from deepening ) 是由 张加富 于 2021-09-17 设计创作，主要内容包括：本发明公开了一种近视度数预防加深的眼镜片,包括具有折射率的镜片本体,镜片本体具有位于中央的光学单元与环绕于边缘的延伸单元,光学单元具有光学凸面与光学凹面,延伸单元具有上环面与下环面,上环面与下环面水平；光学凸面的曲率大于光学凹面的曲率；设置于镜片本体且环绕镜片本体的中心光点的多个间隔的椭圆形的渐进屈光带,渐进屈光带的屈光度由内至外渐小。本发明通过设计延伸单元,减小配重,同时将光学单元的曲率向边缘椭圆渐小设计,屈光度相应缩减,形成有区域的变化,无论从哪个角度都能看清物体,避免以往青少年佩戴近视眼镜视力越来越差的麻烦。(The invention discloses a spectacle lens for preventing the deepening of myopia degrees, which comprises a lens body with refractive index, wherein the lens body is provided with an optical unit positioned in the center and an extension unit surrounding the edge, the optical unit is provided with an optical convex surface and an optical concave surface, the extension unit is provided with an upper ring surface and a lower ring surface, and the upper ring surface and the lower ring surface are horizontal; the curvature of the optical convex surface is larger than that of the optical concave surface; a plurality of spaced elliptic progressive refraction zones which are arranged on the lens body and surround the central light point of the lens body, wherein the diopter of the progressive refraction zones is gradually reduced from inside to outside. The invention reduces the counter weight by designing the extension unit, simultaneously designs the curvature of the optical unit to be gradually reduced to the edge ellipse, correspondingly reduces the diopter, forms the change of the area, and can clearly see objects from any angle, thereby avoiding the trouble that the vision of the previous teenager wearing the myopia glasses is increasingly poor.)

1. An ophthalmic lens for preventing progression of myopia power, comprising:

the lens body is provided with an optical unit positioned in the center and an extension unit surrounding the edge, the optical unit is provided with an optical convex surface and an optical concave surface, the extension unit is provided with an upper ring surface and a lower ring surface, and the upper ring surface and the lower ring surface are horizontal; the curvature of the optical convex surface is larger than that of the optical concave surface;

the progressive refractive power zone is arranged on the lens body and surrounds a plurality of spaced oval-shaped progressive refractive power zones of the central light point of the lens body, and the diopter of the progressive refractive power zone is gradually reduced from inside to outside.

2. The ophthalmic lens of claim 1, wherein the vertical distance from the optical convex surface to the optical concave surface decreases from the center of the lens body outward.

3. An ophthalmic lens for the prevention of progression of myopia according to claim 1, wherein the optical unit has a central thickness of 4mm and an edge thickness of 2 mm.

4. The spectacle lens for preventing progression of myopia according to claim 3, wherein the extension unit has a thickness of 2 mm.

5. The spectacle lens for preventing progression of myopia according to claim 1, wherein the progressive dioptric band includes an innermost high power band having a refractive power of-3D, an outermost low power band having a refractive power of-1.5D, and a plurality of transition bands therebetween, and wherein the transition bands have a refractive power of-3D to-1.5D.

6. The spectacle lens for the prevention of progression of myopia according to claim 5, wherein the diopter of the transition zone decreases by 0.5D from the height zone to the low zone.

7. The spectacle lens for preventing progression of myopia according to claim 1, wherein the extension unit has a ring width of 2 mm.

8. An ophthalmic lens for the prevention of progression of myopia power as claimed in claim 1, wherein the progressive power zones are spaced in a gradient of decreasing magnitude.

Technical Field

The invention belongs to the technical field of lenses, and particularly relates to a spectacle lens for preventing the deepening of myopia degrees.

Background

At present, the number of people wearing glasses for teenagers is increased sharply, and the main reasons are that the learning pressure is high, the habit of using eyes is poor and the like, so a large number of glasses products are developed; in the existing market, the lens with larger spectacle number generally has thicker thickness and larger weight and does not have the function of avoiding the deepening of the number of the lenses; in addition, the existing glasses generally have blind areas and cannot provide the best visual experience, the peripheral image of the defocused lens is imaged behind the retina, although a clear object imaging signal is obtained, a stimulation signal with defects of the vision is sent out on the peripheral retina, so that the eyeball is stretched, the retina grows backwards, and the axis of the eye is stretched; therefore, how to provide a pair of glasses for solving the technical problems becomes a technical problem which needs to be solved by the technical personnel in the field.

Disclosure of Invention

In view of the above, the technical problem to be solved by the present invention is to provide a spectacle lens for preventing the progression of myopia degree, wherein the extension unit is designed to reduce the weight, and the curvature of the optical unit is designed to be gradually reduced towards the edge ellipse, so that the diopter is correspondingly reduced, and the change of the area is formed, so that the object can be seen clearly from any angle, and the problem that the vision of the previous teenager wearing the myopia glasses is increasingly poor is avoided.

In order to solve the technical problem, the invention discloses a spectacle lens for preventing the deepening of the myopia degree, which comprises a lens body with refractive index, wherein the lens body is provided with an optical unit positioned in the center and an extension unit surrounding the edge, the optical unit is provided with an optical convex surface and an optical concave surface, the extension unit is provided with an upper ring surface and a lower ring surface, and the upper ring surface and the lower ring surface are horizontal; the curvature of the optical convex surface is larger than that of the optical concave surface; a plurality of spaced elliptic progressive refraction zones which are arranged on the lens body and surround the central light point of the lens body, wherein the diopter of the progressive refraction zones is gradually reduced from inside to outside.

According to an embodiment of the present invention, the vertical distance from the optical convex surface to the optical concave surface gradually decreases from the center of the lens body to the outside.

According to an embodiment of the present invention, the optical unit has a center thickness of 4mm and an edge thickness of 2 mm.

According to an embodiment of the present invention, the thickness of the extension unit is 2 mm.

According to an embodiment of the present invention, the progressive refractive band includes an innermost height band, an outermost low height band, and a plurality of transition bands therebetween, wherein the diopter of the height band is-3D, the diopter of the low height band is-1.5D, and the diopter of the transition bands is between-3D and-1.5D.

According to an embodiment of the present invention, the diopter of the transition zone is reduced by 0.5D from the height zone to the low zone.

According to an embodiment of the present invention, the width of the extension unit ring is 2 mm.

According to an embodiment of the invention, the progressive power zone is spaced in a gradient decreasing manner.

Compared with the prior art, the invention can obtain the following technical effects:

through design extension unit, reduce the counter weight, with optical unit's camber to the oval design that diminishes of edge simultaneously, the diopter is corresponding to be reduced, is formed with regional change, no matter can both see clearly the object from which angle, avoids in the past teenager to wear the more and more poor trouble of myopia glasses vision.

Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a side view of an ophthalmic lens for preventing the progression of myopia power in accordance with an embodiment of the present invention;

figure 2 is a schematic view of an ophthalmic lens for the prevention of progression of myopia power in accordance with an embodiment of the present invention.

Reference numerals

The lens comprises a lens body 10, an optical unit 20, an optical convex surface 21, an optical concave surface 22, an extension unit 30, an upper annular surface 31, a lower annular surface 32 and a progressive refraction band 40.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.

Referring to fig. 1 and 2 together, fig. 1 is a side view of an eyeglass lens for preventing the progression of myopia progression according to an embodiment of the present invention; figure 2 is a schematic view of an ophthalmic lens for the prevention of progression of myopia power in accordance with an embodiment of the present invention. As shown in the figures, an eyeglass lens for preventing the progression of myopia power comprises a lens body 10 with refractive power, the lens body 10 having a central optical unit 20 and an extended unit 30 surrounding the edge, the optical unit 20 having a convex optical surface 21 and a concave optical surface 22, the extended unit 30 having an upper annular surface 31 and a lower annular surface 32, the upper annular surface 31 and the lower annular surface 32 being horizontal; the curvature of the convex optical surface 21 is larger than that of the concave optical surface 22.

In an embodiment of the present invention, the lens body 10 is formed by the optical unit 20 and the extension unit 30, the optical unit 20 is located at the center, and has the optical convex surface 21 and the optical concave surface 22, and the curvature of the optical convex surface 21 is greater than that of the optical concave surface 22, so as to form a diopter with a large enough power at the center to provide an adaptive diopter requirement, and the peripheral diopter is reduced along with the reduction of the curvature, when the vision is concentrated on the peripheral lens to see far and near, the diopter requirement can be provided to be smaller, the optimal diopter is not needed, the compound of eyes is reduced, the fatigue is reduced, and the protection effect is achieved.

The extension unit 30 is annularly arranged on the edge of the optical unit 20, and has an upper annular surface 31 and a lower annular surface 32, which are horizontal and edge-protecting, and meanwhile, because of the reduction of curvature, the thickness of the edge reaches the minimum value, so that the weight can be reduced, the pressure of the nose bridge can be reduced, and the wearing comfort can be improved.

The invention also has a plurality of spaced elliptic progressive refraction bands 40 which are arranged on the lens body 10 and surround the central light spot of the lens body 10, the diopter of the progressive refraction bands 40 is gradually reduced from inside to outside to provide a focus corresponding to the progressive refraction bands 40, and the elliptic change ensures that a wearer can see objects more clearly and naturally from any direction of the lens, the lens edge degree is reduced along with the increase of the thickness of the central light spot area to the edge, when the wearer uses eyes at a short distance, an imaging point is positioned on the retina, the axis of the eye is not easy to be lengthened, thereby relieving the fatigue of vision and ensuring that the degree of myopia is not easy to be deepened. Is very suitable for teenagers.

In the invention, the vertical distance from the optical convex surface 21 to the optical concave surface 22 is gradually reduced from the center of the lens body 10 to the outside, namely, the thickness is gradually reduced to the outside, the weight is reduced, and the wearing is more comfortable.

Preferably, the optical unit 20 has a center thickness of 4mm and an edge thickness of 2mm, so as to meet the requirement of light and thin thickness.

Correspondingly, the extension unit 30 has a thickness of 2mm and is designed to be light and thin. The extension unit has the ring width of 2mm, and is simple to form and convenient to assemble.

The progressive refraction band 40 comprises an innermost high band, an outermost low band and a plurality of transition bands between the innermost high band and the outermost low band, wherein the high band has diopter of-3D, the low band has diopter of-1.5D, and the transition bands have diopters of-3D to-1.5D. The pupil-focusing lens adapts to the contraction of the pupil, is elliptically zoomed, has no blind area, can be clearly seen at a relatively close position by utilizing a variable angle, can be clearly seen at a relatively far position by the center, and is comfortable to use by eyes.

In addition, the diopter of the transition zone is reduced by 0.5D from the height zone to the low zone, and is uniformly reduced, and the pupil is adjusted lightly without pressure.

In a preferred embodiment, the progressive refraction bands 40 are spaced in a gradient manner, corresponding to elliptical variation, uniform and adaptable to users.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.